windows下tomcat集群配置(兩種方法)


兩種方法只是在配置上不同原理一樣,因為apache2.X后其自身集成了mod_jk功能,相對於1.3版本,不需要再進行繁瑣的worker.properties配置,配置過程大幅簡化。

一、軟件需求
  操作系統:Windows XP
  JDK:jdk1.6.0_16,下載地址:http://www.oracle.com/technetwork/java/javase/downloads/index.html 。
  Apache :httpd-2.2.17 (一個),下載地址:http://httpd.apache.org/ 。
  Tomcat:tomcat-7.0.2 (兩個),下載地址:http://tomcat.apache.org/download-70.cgi 。
  mod_jk:mod_jk-apache-2.0.55.so (1個),下載地址:http://tomcat.apache.org/download-70.cgi 。

二、環境搭建

  安照上篇windows下apache tomcat整合中的方法安裝jdk/apache/tomcat

三、環境配置(兩種配置)

  1.  原始配置

    (1)apache配置

       1>mod_jk.conf(apache/conf)

mod_jk.conf  
 1 # 加載mod_jk模塊,此處的mod_jk.so為你復制到modules/下的mod_jk名   
 2 LoadModule jk_module modules/mod_jk-apache-2.2.2.so
 3 # 指定 workers.properties文件路徑(指定tomcat監聽配置文件地址
 4 JkWorkersFile conf/workers.properties
 5 # 設置日志存放路徑   
 6 JkLogFile logs/mod_jk.log
 7 # 設置日志級別 [debug/error/info]   
 8 JkLogLevel info   
 9 # 設置日志格式   
10 JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"  
11 # JkOptions indicate to send SSL KEY SIZE,   
12 JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories   
13 # JkRequestLogFormat set the request format   
14 JkRequestLogFormat "%w %V %T"  
15 
16 #設置虛擬主機
17 #<VirtualHost localhost>
18 #如果非虛擬主機,將<VirtualHost localhost>和最后的</VirtualHost>注釋或者刪除掉即可
19 #ServerAdmin localhost
20 #DocumentRoot E:/wwwroot
21 #<Directory "E:/wwwroot">
22 #您的站點項目所在路徑,應與tomcat中的目錄設置相同,據說以上兩個必須同時設置才可以生效,沒有試過不同的時候會有什么情況
23 #ServerName localhost
24 #DirectoryIndex index.html index.htm index.jsp
25 #ErrorLog logs/shsc-error_log.txt
26 #CustomLog logs/shsc-access_log.txt common
27 #JkMount /servlet/* ajp13 
28 #讓Apache支持對servlet傳送,用以Tomcat解析
29 #JkMount /*.jsp ajp13 
30 #讓Apache支持對jsp傳送,用以Tomcat解析
31 #JkMount /*.do ajp13 
32 #讓Apache支持對.do傳送,用以Tomcat解析
33 #</VirtualHost>
34 
35 #Send servlet for context /examples to worker named #ajp13,指定那些請求交給tomcat處理,"controller"為在workers.propertise里指定的負載分配控制器(讓Apache支持對jsp傳送,用以Tomcat解析)
36 JkMount /*.jsp controller
37 JkMount /*.do controller 
38 JkMount /*.dd controller
39 JkMount /*.ee controller
40 JkMount /servlet/* controller
41 JkMount /gwyhr* controller

                  2>httpd.conf(apache/conf)

httpd.conf
  1 #
  2 # This is the main Apache HTTP server configuration file.  It contains the
  3 # configuration directives that give the server its instructions.
  4 # See <URL:http://httpd.apache.org/docs/2.2> for detailed information.
  5 # In particular, see 
  6 # <URL:http://httpd.apache.org/docs/2.2/mod/directives.html>
  7 # for a discussion of each configuration directive.
  8 #
  9 # Do NOT simply read the instructions in here without understanding
 10 # what they do.  They're here only as hints or reminders.  If you are unsure
 11 # consult the online docs. You have been warned.  
 12 #
 13 # Configuration and logfile names: If the filenames you specify for many
 14 # of the server's control files begin with "/" (or "drive:/" for Win32), the
 15 # server will use that explicit path.  If the filenames do *not* begin
 16 # with "/", the value of ServerRoot is prepended -- so "logs/foo.log"
 17 # with ServerRoot set to "D:/Program Files/Apache Software Foundation/Apache2.2" will be interpreted by the
 18 # server as "D:/Program Files/Apache Software Foundation/Apache2.2/logs/foo.log".
 19 #
 20 # NOTE: Where filenames are specified, you must use forward slashes
 21 # instead of backslashes (e.g., "c:/apache" instead of "c:\apache").
 22 # If a drive letter is omitted, the drive on which httpd.exe is located
 23 # will be used by default.  It is recommended that you always supply
 24 # an explicit drive letter in absolute paths to avoid confusion.
 25 
 26 #
 27 # ServerRoot: The top of the directory tree under which the server's
 28 # configuration, error, and log files are kept.
 29 #
 30 # Do not add a slash at the end of the directory path.  If you point
 31 # ServerRoot at a non-local disk, be sure to point the LockFile directive
 32 # at a local disk.  If you wish to share the same ServerRoot for multiple
 33 # httpd daemons, you will need to change at least LockFile and PidFile.
 34 #
 35 ServerRoot "D:/Program Files/Apache Software Foundation/Apache2.2"
 36 
 37 #
 38 # Listen: Allows you to bind Apache to specific IP addresses and/or
 39 # ports, instead of the default. See also the <VirtualHost>
 40 # directive.
 41 #
 42 # Change this to Listen on specific IP addresses as shown below to 
 43 # prevent Apache from glomming onto all bound IP addresses.
 44 #
 45 #Listen 12.34.56.78:80
 46 Listen 80
 47 
 48 #
 49 # Dynamic Shared Object (DSO) Support
 50 #
 51 # To be able to use the functionality of a module which was built as a DSO you
 52 # have to place corresponding `LoadModule' lines at this location so the
 53 # directives contained in it are actually available _before_ they are used.
 54 # Statically compiled modules (those listed by `httpd -l') do not need
 55 # to be loaded here.
 56 #
 57 # Example:
 58 # LoadModule foo_module modules/mod_foo.so
 59 #
 60 LoadModule actions_module modules/mod_actions.so
 61 LoadModule alias_module modules/mod_alias.so
 62 LoadModule asis_module modules/mod_asis.so
 63 LoadModule auth_basic_module modules/mod_auth_basic.so
 64 #LoadModule auth_digest_module modules/mod_auth_digest.so
 65 #LoadModule authn_alias_module modules/mod_authn_alias.so
 66 #LoadModule authn_anon_module modules/mod_authn_anon.so
 67 #LoadModule authn_dbd_module modules/mod_authn_dbd.so
 68 #LoadModule authn_dbm_module modules/mod_authn_dbm.so
 69 LoadModule authn_default_module modules/mod_authn_default.so
 70 LoadModule authn_file_module modules/mod_authn_file.so
 71 #LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
 72 #LoadModule authz_dbm_module modules/mod_authz_dbm.so
 73 LoadModule authz_default_module modules/mod_authz_default.so
 74 LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
 75 LoadModule authz_host_module modules/mod_authz_host.so
 76 #LoadModule authz_owner_module modules/mod_authz_owner.so
 77 LoadModule authz_user_module modules/mod_authz_user.so
 78 LoadModule autoindex_module modules/mod_autoindex.so
 79 #LoadModule cache_module modules/mod_cache.so
 80 #LoadModule cern_meta_module modules/mod_cern_meta.so
 81 LoadModule cgi_module modules/mod_cgi.so
 82 #LoadModule charset_lite_module modules/mod_charset_lite.so
 83 #LoadModule dav_module modules/mod_dav.so
 84 #LoadModule dav_fs_module modules/mod_dav_fs.so
 85 #LoadModule dav_lock_module modules/mod_dav_lock.so
 86 #LoadModule dbd_module modules/mod_dbd.so
 87 
 88 ######apache啟用gzip壓縮######
 89 #加載mod_deflate.so模塊
 90 LoadModule deflate_module modules/mod_deflate.so
 91 #對text/html text/php text/png text/jpg text/plain text/css text/xml text/javascript啟用GZIP壓縮
 92 AddOutputFilterByType DEFLATE text/html text/php text/png text/jpg text/plain text/css text/xml text/javascript
 93 #壓縮級別 9 性能最佳
 94 DeflateCompressionLevel 9
 95 #啟用deflate模塊對本站點的所有輸出進行GZIP壓縮
 96 SetOutputFilter DEFLATE
 97 #############################
 98 
 99 LoadModule dir_module modules/mod_dir.so
100 #LoadModule disk_cache_module modules/mod_disk_cache.so
101 #LoadModule dumpio_module modules/mod_dumpio.so
102 LoadModule env_module modules/mod_env.so
103 #LoadModule expires_module modules/mod_expires.so
104 #LoadModule ext_filter_module modules/mod_ext_filter.so
105 #LoadModule file_cache_module modules/mod_file_cache.so
106 #LoadModule filter_module modules/mod_filter.so
107 #LoadModule headers_module modules/mod_headers.so
108 #LoadModule ident_module modules/mod_ident.so
109 #LoadModule imagemap_module modules/mod_imagemap.so
110 LoadModule include_module modules/mod_include.so
111 #LoadModule info_module modules/mod_info.so
112 LoadModule isapi_module modules/mod_isapi.so
113 #LoadModule ldap_module modules/mod_ldap.so
114 #LoadModule logio_module modules/mod_logio.so
115 LoadModule log_config_module modules/mod_log_config.so
116 #LoadModule log_forensic_module modules/mod_log_forensic.so
117 #LoadModule mem_cache_module modules/mod_mem_cache.so
118 LoadModule mime_module modules/mod_mime.so
119 #LoadModule mime_magic_module modules/mod_mime_magic.so
120 LoadModule negotiation_module modules/mod_negotiation.so
121 #LoadModule proxy_module modules/mod_proxy.so
122 #LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
123 #LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
124 #LoadModule proxy_connect_module modules/mod_proxy_connect.so
125 #LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
126 #LoadModule proxy_http_module modules/mod_proxy_http.so
127 #LoadModule proxy_scgi_module modules/mod_proxy_scgi.so
128 #LoadModule reqtimeout_module modules/mod_reqtimeout.so
129 #LoadModule rewrite_module modules/mod_rewrite.so
130 LoadModule setenvif_module modules/mod_setenvif.so
131 #LoadModule speling_module modules/mod_speling.so
132 #LoadModule ssl_module modules/mod_ssl.so
133 #LoadModule status_module modules/mod_status.so
134 #LoadModule substitute_module modules/mod_substitute.so
135 #LoadModule unique_id_module modules/mod_unique_id.so
136 #LoadModule userdir_module modules/mod_userdir.so
137 #LoadModule usertrack_module modules/mod_usertrack.so
138 #LoadModule version_module modules/mod_version.so
139 #LoadModule vhost_alias_module modules/mod_vhost_alias.so
140 
141 <IfModule !mpm_netware_module>
142 <IfModule !mpm_winnt_module>
143 #
144 # If you wish httpd to run as a different user or group, you must run
145 # httpd as root initially and it will switch.  
146 #
147 # User/Group: The name (or #number) of the user/group to run httpd as.
148 # It is usually good practice to create a dedicated user and group for
149 # running httpd, as with most system services.
150 #
151 User daemon
152 Group daemon
153 
154 </IfModule>
155 </IfModule>
156 
157 # 'Main' server configuration
158 #
159 # The directives in this section set up the values used by the 'main'
160 # server, which responds to any requests that aren't handled by a
161 # <VirtualHost> definition.  These values also provide defaults for
162 # any <VirtualHost> containers you may define later in the file.
163 #
164 # All of these directives may appear inside <VirtualHost> containers,
165 # in which case these default settings will be overridden for the
166 # virtual host being defined.
167 #
168 
169 #
170 # ServerAdmin: Your address, where problems with the server should be
171 # e-mailed.  This address appears on some server-generated pages, such
172 # as error documents.  e.g. admin@your-domain.com
173 #
174 ServerAdmin zbjbox@gmail.com
175 
176 #
177 # ServerName gives the name and port that the server uses to identify itself.
178 # This can often be determined automatically, but we recommend you specify
179 # it explicitly to prevent problems during startup.
180 #
181 # If your host doesn't have a registered DNS name, enter its IP address here.
182 #
183 #ServerName localhost:80
184 
185 #
186 # DocumentRoot: The directory out of which you will serve your
187 # documents. By default, all requests are taken from this directory, but
188 # symbolic links and aliases may be used to point to other locations.
189 #
190 DocumentRoot "D:/Program Files/Apache Software Foundation/Apache2.2/htdocs"
191 
192 #
193 # Each directory to which Apache has access can be configured with respect
194 # to which services and features are allowed and/or disabled in that
195 # directory (and its subdirectories). 
196 #
197 # First, we configure the "default" to be a very restrictive set of 
198 # features.  
199 #
200 <Directory />
201     Options FollowSymLinks
202     AllowOverride None
203     Order deny,allow
204     Deny from all
205 </Directory>
206 
207 #
208 # Note that from this point forward you must specifically allow
209 # particular features to be enabled - so if something's not working as
210 # you might expect, make sure that you have specifically enabled it
211 # below.
212 #
213 
214 #
215 # This should be changed to whatever you set DocumentRoot to.
216 #
217 <Directory "D:/Program Files/Apache Software Foundation/Apache2.2/htdocs">
218     #
219     # Possible values for the Options directive are "None", "All",
220     # or any combination of:
221     #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
222     #
223     # Note that "MultiViews" must be named *explicitly* --- "Options All"
224     # doesn't give it to you.
225     #
226     # The Options directive is both complicated and important.  Please see
227     # http://httpd.apache.org/docs/2.2/mod/core.html#options
228     # for more information.
229     #
230     Options Indexes FollowSymLinks
231 
232     #
233     # AllowOverride controls what directives may be placed in .htaccess files.
234     # It can be "All", "None", or any combination of the keywords:
235     #   Options FileInfo AuthConfig Limit
236     #
237     AllowOverride None
238 
239     #
240     # Controls who can get stuff from this server.
241     #
242     Order allow,deny
243     Allow from all
244 
245 </Directory>
246 
247 #
248 # DirectoryIndex: sets the file that Apache will serve if a directory
249 # is requested.
250 # 此處加上index.jsp是為了配置完tomcat后若apache中的index.html不存在則能看到tomcat的首頁(可以不加,則看到的是it works)
251 #
252 <IfModule dir_module>
253     DirectoryIndex index.html index.jsp
254 </IfModule>
255 
256 #
257 # The following lines prevent .htaccess and .htpasswd files from being 
258 # viewed by Web clients. 
259 #
260 <FilesMatch "^\.ht">
261     Order allow,deny
262     Deny from all
263     Satisfy All
264 </FilesMatch>
265 
266 #
267 # ErrorLog: The location of the error log file.
268 # If you do not specify an ErrorLog directive within a <VirtualHost>
269 # container, error messages relating to that virtual host will be
270 # logged here.  If you *do* define an error logfile for a <VirtualHost>
271 # container, that host's errors will be logged there and not here.
272 #
273 ErrorLog "logs/error.log"
274 
275 #
276 # LogLevel: Control the number of messages logged to the error_log.
277 # Possible values include: debug, info, notice, warn, error, crit,
278 # alert, emerg.
279 #
280 LogLevel warn
281 
282 <IfModule log_config_module>
283     #
284     # The following directives define some format nicknames for use with
285     # a CustomLog directive (see below).
286     #
287     LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
288     LogFormat "%h %l %u %t \"%r\" %>s %b" common
289 
290     <IfModule logio_module>
291       # You need to enable mod_logio.c to use %I and %O
292       LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
293     </IfModule>
294 
295     #
296     # The location and format of the access logfile (Common Logfile Format).
297     # If you do not define any access logfiles within a <VirtualHost>
298     # container, they will be logged here.  Contrariwise, if you *do*
299     # define per-<VirtualHost> access logfiles, transactions will be
300     # logged therein and *not* in this file.
301     #
302     CustomLog "logs/access.log" common
303 
304     #
305     # If you prefer a logfile with access, agent, and referer information
306     # (Combined Logfile Format) you can use the following directive.
307     #
308     #CustomLog "logs/access.log" combined
309 </IfModule>

310 
311 <IfModule alias_module>
312     #
313     # Redirect: Allows you to tell clients about documents that used to 
314     # exist in your server's namespace, but do not anymore. The client 
315     # will make a new request for the document at its new location.
316     # Example:
317     # Redirect permanent /foo http://localhost/bar
318 
319     #
320     # Alias: Maps web paths into filesystem paths and is used to
321     # access content that does not live under the DocumentRoot.
322     # Example:
323     # Alias /webpath /full/filesystem/path
324     #
325     # If you include a trailing / on /webpath then the server will
326     # require it to be present in the URL.  You will also likely
327     # need to provide a <Directory> section to allow access to
328     # the filesystem path.
329 
330     #
331     # ScriptAlias: This controls which directories contain server scripts. 
332     # ScriptAliases are essentially the same as Aliases, except that
333     # documents in the target directory are treated as applications and
334     # run by the server when requested rather than as documents sent to the
335     # client.  The same rules about trailing "/" apply to ScriptAlias
336     # directives as to Alias.
337     #
338     ScriptAlias /cgi-bin/ "D:/Program Files/Apache Software Foundation/Apache2.2/cgi-bin/"
339 
340 </IfModule>
341 
342 <IfModule cgid_module>
343     #
344     # ScriptSock: On threaded servers, designate the path to the UNIX
345     # socket used to communicate with the CGI daemon of mod_cgid.
346     #
347     #Scriptsock logs/cgisock
348 </IfModule>
349 
350 #
351 # "D:/Program Files/Apache Software Foundation/Apache2.2/cgi-bin" should be changed to whatever your ScriptAliased
352 # CGI directory exists, if you have that configured.
353 #
354 <Directory "D:/Program Files/Apache Software Foundation/Apache2.2/cgi-bin">
355     AllowOverride None
356     Options None
357     Order allow,deny
358     Allow from all
359 </Directory>
360 
361 #
362 # DefaultType: the default MIME type the server will use for a document
363 # if it cannot otherwise determine one, such as from filename extensions.
364 # If your server contains mostly text or HTML documents, "text/plain" is
365 # a good value.  If most of your content is binary, such as applications
366 # or images, you may want to use "application/octet-stream" instead to
367 # keep browsers from trying to display binary files as though they are
368 # text.
369 #
370 DefaultType text/plain
371 
372 <IfModule mime_module>
373     #
374     # TypesConfig points to the file containing the list of mappings from
375     # filename extension to MIME-type.
376     #
377     TypesConfig conf/mime.types
378 
379     #
380     # AddType allows you to add to or override the MIME configuration
381     # file specified in TypesConfig for specific file types.
382     #
383     #AddType application/x-gzip .tgz
384     #
385     # AddEncoding allows you to have certain browsers uncompress
386     # information on the fly. Note: Not all browsers support this.
387     #
388     #AddEncoding x-compress .Z
389     #AddEncoding x-gzip .gz .tgz
390     #
391     # If the AddEncoding directives above are commented-out, then you
392     # probably should define those extensions to indicate media types:
393     #
394     AddType application/x-compress .Z
395     AddType application/x-gzip .gz .tgz
396 
397     #
398     # AddHandler allows you to map certain file extensions to "handlers":
399     # actions unrelated to filetype. These can be either built into the server
400     # or added with the Action directive (see below)
401     #
402     # To use CGI scripts outside of ScriptAliased directories:
403     # (You will also need to add "ExecCGI" to the "Options" directive.)
404     #
405     #AddHandler cgi-script .cgi
406 
407     # For type maps (negotiated resources):
408     #AddHandler type-map var
409 
410     #
411     # Filters allow you to process content before it is sent to the client.
412     #
413     # To parse .shtml files for server-side includes (SSI):
414     # (You will also need to add "Includes" to the "Options" directive.)
415     #
416     #AddType text/html .shtml
417     #AddOutputFilter INCLUDES .shtml
418 </IfModule>
419 
420 #
421 # The mod_mime_magic module allows the server to use various hints from the
422 # contents of the file itself to determine its type.  The MIMEMagicFile
423 # directive tells the module where the hint definitions are located.
424 #
425 #MIMEMagicFile conf/magic
426 
427 #
428 # Customizable error responses come in three flavors:
429 # 1) plain text 2) local redirects 3) external redirects
430 #
431 # Some examples:
432 #ErrorDocument 500 "The server made a boo boo."
433 #ErrorDocument 404 /missing.html
434 #ErrorDocument 404 "/cgi-bin/missing_handler.pl"
435 #ErrorDocument 402 http://localhost/subscription_info.html
436 #
437 
438 #
439 # MaxRanges: Maximum number of Ranges in a request before
440 # returning the entire resource, or one of the special
441 # values 'default', 'none' or 'unlimited'.
442 # Default setting is to accept 200 Ranges.
443 #MaxRanges unlimited
444 
445 #
446 # EnableMMAP and EnableSendfile: On systems that support it, 
447 # memory-mapping or the sendfile syscall is used to deliver
448 # files.  This usually improves server performance, but must
449 # be turned off when serving from networked-mounted 
450 # filesystems or if support for these functions is otherwise
451 # broken on your system.
452 #
453 #EnableMMAP off
454 #EnableSendfile off
455 
456 # Supplemental configuration
457 #
458 # The configuration files in the conf/extra/ directory can be 
459 # included to add extra features or to modify the default configuration of 
460 # the server, or you may simply copy their contents here and change as 
461 # necessary.
462 
463 # Server-pool management (MPM specific)
464 #Include conf/extra/httpd-mpm.conf
465 
466 # Multi-language error messages
467 #Include conf/extra/httpd-multilang-errordoc.conf
468 
469 # Fancy directory listings
470 #Include conf/extra/httpd-autoindex.conf
471 
472 # Language settings
473 #Include conf/extra/httpd-languages.conf
474 
475 # User home directories
476 #Include conf/extra/httpd-userdir.conf
477 
478 # Real-time info on requests and configuration
479 #Include conf/extra/httpd-info.conf
480 
481 # Virtual hosts
482 #Include conf/extra/httpd-vhosts.conf
483 
484 # Local access to the Apache HTTP Server Manual
485 #Include conf/extra/httpd-manual.conf
486 
487 # Distributed authoring and versioning (WebDAV)
488 #Include conf/extra/httpd-dav.conf
489 
490 # Various default settings
491 #Include conf/extra/httpd-default.conf
492 
493 # Secure (SSL/TLS) connections
494 #Include conf/extra/httpd-ssl.conf
495 #
496 # Note: The following must must be present to support
497 #       starting without SSL on platforms with no /dev/random equivalent
498 #       but a statically compiled-in mod_ssl.
499 #
500 <IfModule ssl_module>
501 SSLRandomSeed startup builtin
502 SSLRandomSeed connect builtin
503 </IfModule>
504 include conf/mod_jk.conf

                  3>workers.properties(apache/conf)

workers.properties
 1 #workers.tomcat_home=D:\software\apache-tomcat-6.0.20\apache-tomcat-6.0.20
 2 #workers.java_home=C:\Program Files\Java\jdk1.6.0_18\jre
 3 #ps=\
 4 #worker.list=ajp13
 5 #worker.ajp13.port=8009
 6 #worker.ajp13.host=localhost
 7 #worker.ajp13.type=ajp13
 8 #worker.ajp13.lbfactor=1
 9 #tomcat的路徑,讓mod_jk模塊知道
10 workers.tomcat1_home=D:\Program Files\Apache Software Foundation\tomcat1
11 workers.tomcat2_home=D:\Program Files\Apache Software Foundation\tomcat2
12 workers.tomcat3_home=D:\Program Files\Apache Software Foundation\tomcat3
13 #jdk的路徑,讓mod_jk模塊知道jre的位置
14 workers.java_home=C:\Program Files\Java\jdk1.6.0_18\jre
15 #路徑分隔符
16 ps=\
17 #server 列表(tomcat1,tomcat2,tomcat3為別名)
18 worker.list = controller #模塊版本
19 #========tomcat1========
20 worker.tomcat1.port=8009 #ajp13 端口號,在tomcat下server.xml配置,默認8009(工作端口,若沒占用則不用修改)
21 worker.tomcat1.host=localhost #tomcat的主機地址,如不為本機,請填寫ip地址
22 worker.tomcat1.type=ajp13 #類型
23 worker.tomcat1.lbfactor = 1 #server的加權比重,值越高,分得的請求越多(代理數,不用修改)
24 #========tomcat2========
25 worker.tomcat2.port=9009 #ajp13 端口號,在tomcat下server.xml配置,默認8009
26 worker.tomcat2.host=localhost #tomcat的主機地址,如不為本機,請填寫ip地址
27 worker.tomcat2.type=ajp13
28 worker.tomcat2.lbfactor = 1 #server的加權比重,值越高,分得的請求越多
29 #========tomcat3========
30 worker.tomcat3.port=9010 #ajp13 端口號,在tomcat下server.xml配置,默認8009
31 worker.tomcat3.host=localhost #tomcat的主機地址,如不為本機,請填寫ip地址
32 worker.tomcat3.type=ajp13
33 worker.tomcat3.lbfactor = 1 #server的加權比重,值越高,分得的請求越多
34 #========controller,負載均衡控制器========
35 worker.controller.type=lb
36 worker.controller.balanced_workers=tomcat1,tomcat2,tomcat3 #指定分擔請求的tomcat
37 worker.controller.sticky_session=False #粘性會話設置

          (2)tomcat配置

      1>server.xml(tomcat/conf)

server.xml
  1 <?xml version='1.0' encoding='utf-8'?>
  2 <!--
  3   Licensed to the Apache Software Foundation (ASF) under one or more
  4   contributor license agreements.  See the NOTICE file distributed with
  5   this work for additional information regarding copyright ownership.
  6   The ASF licenses this file to You under the Apache License, Version 2.0
  7   (the "License"); you may not use this file except in compliance with
  8   the License.  You may obtain a copy of the License at
  9 
 10       http://www.apache.org/licenses/LICENSE-2.0
 11 
 12   Unless required by applicable law or agreed to in writing, software
 13   distributed under the License is distributed on an "AS IS" BASIS,
 14   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15   See the License for the specific language governing permissions and
 16   limitations under the License.
 17 -->
 18 <!-- Note:  A "Server" is not itself a "Container", so you may not
 19      define subcomponents such as "Valves" at this level.
 20      Documentation at /docs/config/server.html
 21  -->
 22 <Server port="8005" shutdown="SHUTDOWN">
 23 
 24   <!--APR library loader. Documentation at /docs/apr.html -->
 25   <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
 26   <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
 27   <Listener className="org.apache.catalina.core.JasperListener" />
 28   <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->
 29   <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
 30   <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
 31 
 32   <!-- Global JNDI resources
 33        Documentation at /docs/jndi-resources-howto.html
 34   -->
 35   <GlobalNamingResources>
 36     <!-- Editable user database that can also be used by
 37          UserDatabaseRealm to authenticate users
 38     -->
 39     <Resource name="UserDatabase" auth="Container"
 40               type="org.apache.catalina.UserDatabase"
 41               description="User database that can be updated and saved"
 42               factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
 43               pathname="conf/tomcat-users.xml" />
 44   </GlobalNamingResources>
 45 
 46   <!-- A "Service" is a collection of one or more "Connectors" that share
 47        a single "Container" Note:  A "Service" is not itself a "Container", 
 48        so you may not define subcomponents such as "Valves" at this level.
 49        Documentation at /docs/config/service.html
 50    -->
 51   <Service name="Catalina">
 52   
 53     <!--The connectors can use a shared executor, you can define one or more named thread pools-->
 54     <!--executor-->
 55     <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
 56         maxThreads="1000" minSpareThreads="350"/>
 57     
 58     
 59     <!-- A "Connector" represents an endpoint by which requests are received
 60          and responses are returned. Documentation at :
 61          Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
 62          Java AJP  Connector: /docs/config/ajp.html
 63          APR (HTTP/AJP) Connector: /docs/apr.html
 64          Define a non-SSL HTTP/1.1 Connector on port 8080
 65     -->
 66     <!--type1-->
 67     <!--
 68     <Connector port="8080" protocol="HTTP/1.1" 
 69                connectionTimeout="30000" 
 70                redirectPort="8443" 
 71                enableLookups="false" 
 72                maxThreads="1000" 
 73                minSpareThreads="25" 
 74                maxSpareThreads="75" 
 75                acceptCount="1000" 
 76                compression="on" 
 77                compressionMinSize="2048" 
 78                noCompressionUserAgents="gozilla, traviata" 
 79                compressableMimeType="text/html,text/xml,text/css,text/javascript,image/gif,image/jpg" 
 80                URIEncoding="utf-8" />
 81     -->
 82     <!--type2-->
 83     <!--openNIO/executor/gzip-->
 84     <Connector executor="tomcatThreadPool" port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" 
 85                connectionTimeout="30000" 
 86                redirectPort="8443" 
 87                enableLookups="false" 
 88                acceptCount="1000" 
 89                compression="on" 
 90                compressionMinSize="2048" 
 91                noCompressionUserAgents="gozilla, traviata" 
 92                compressableMimeType="text/html,text/xml,text/css,text/javascript,text/plain,image/gif,image/jpg"
 93                URIEncoding="utf-8" />
 94     <!-- A "Connector" using the shared thread pool-->
 95     <!--
 96     <Connector executor="tomcatThreadPool"
 97                port="8080" protocol="HTTP/1.1" 
 98                connectionTimeout="20000" 
 99                redirectPort="8443" />
100     -->           
101     <!-- Define a SSL HTTP/1.1 Connector on port 8443
102          This connector uses the JSSE configuration, when using APR, the 
103          connector should be using the OpenSSL style configuration
104          described in the APR documentation -->
105     <!--
106     <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
107                maxThreads="150" scheme="https" secure="true"
108                clientAuth="false" sslProtocol="TLS" />
109     -->
110 
111     <!-- Define an AJP 1.3 Connector on port 8009 -->
112     <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
113 
114 
115     <!-- An Engine represents the entry point (within Catalina) that processes
116          every request.  The Engine implementation for Tomcat stand alone
117          analyzes the HTTP headers included with the request, and passes them
118          on to the appropriate Host (virtual host).
119          Documentation at /docs/config/engine.html -->
120 
121     <!-- You should set jvmRoute to support load-balancing via AJP ie :
122     <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">         
123     --> 
124     <Engine name="Catalina"  jvmRoute="tomcat1" defaultHost="localhost">
125 
126       <!--For clustering, please take a look at documentation at:
127           /docs/cluster-howto.html  (simple how to)
128           /docs/config/cluster.html (reference documentation) -->
129      
130              
131 
132       <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
133                  channelSendOptions="6">
134 
135           <Manager className="org.apache.catalina.ha.session.BackupManager"
136                    expireSessionsOnShutdown="false"
137                    notifyListenersOnReplication="true"
138                    mapSendOptions="6"/>
139           <!--
140           <Manager className="org.apache.catalina.ha.session.DeltaManager"
141                    expireSessionsOnShutdown="false"
142                    notifyListenersOnReplication="true"/>
143           -->        
144           <Channel className="org.apache.catalina.tribes.group.GroupChannel">
145             <Membership className="org.apache.catalina.tribes.membership.McastService"
146                         address="228.0.0.4"
147                         port="45564"
148                         frequency="500"
149                         dropTime="3000"/>
150             <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
151                       address="auto"
152                       port="5000"
153                       selectorTimeout="100"
154                       maxThreads="6"/>
155 
156             <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
157               <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
158             </Sender>
159             <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
160             <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
161             <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
162           </Channel>
163 
164           <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
165                  filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
166 
167           <!--
168           <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
169                     tempDir="/tmp/war-temp/"
170                     deployDir="/tmp/war-deploy/"
171                     watchDir="/tmp/war-listen/"
172                     watchEnabled="false"/>
173           -->
174 
175           <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
176       </Cluster>
177       
178       <!-- The request dumper valve dumps useful debugging information about
179            the request and response data received and sent by Tomcat.
180            Documentation at: /docs/config/valve.html -->
181       <!--
182       <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
183       -->
184 
185       <!-- This Realm uses the UserDatabase configured in the global JNDI
186            resources under the key "UserDatabase".  Any edits
187            that are performed against this UserDatabase are immediately
188            available for use by the Realm.  -->
189       <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
190              resourceName="UserDatabase"/>
191 
192       <!-- Define the default virtual host
193            Note: XML Schema validation will not work with Xerces 2.2.
194        -->
195       <Host name="localhost"  appBase="webapps"
196             unpackWARs="true" autoDeploy="true"
197             xmlValidation="false" xmlNamespaceAware="false">
198 
199         <!-- SingleSignOn valve, share authentication between web applications
200              Documentation at: /docs/config/valve.html -->
201         <!--
202         <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
203         -->
204 
205         <!-- Access log processes all example.
206              Documentation at: /docs/config/valve.html -->
207         <!--
208         <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"  
209                prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>
210         -->
211 
212       </Host>
213     </Engine>
214   </Service>
215 </Server>

                 2>web.xml(tomcat/conf)

web.xml(tomcat下的)
<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<!-- ======================== Introduction ============================== -->
<!-- This document defines default values for *all* web applications -->
<!-- loaded into this instance of Tomcat. As each application is -->
<!-- deployed, this file is processed, followed by the -->
<!-- "/WEB-INF/web.xml" deployment descriptor from your own -->
<!-- applications. -->
<!-- -->
<!-- WARNING: Do not configure application-specific resources here! -->
<!-- They should go in the "/WEB-INF/web.xml" file in your application. -->

<!-- ================== Built In Servlet Definitions ==================== -->

<!-- The default servlet for all web applications, that serves static -->
<!-- resources. It processes all requests that are not mapped to other -->
<!-- servlets with servlet mappings (defined either here or in your own -->
<!-- web.xml file. This servlet supports the following initialization -->
<!-- parameters (default values are in square brackets): -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- fileEncoding Encoding to be used to read static resources -->
<!-- [platform default] -->
<!-- -->
<!-- input Input buffer size (in bytes) when reading -->
<!-- resources to be served. [2048] -->
<!-- -->
<!-- listings Should directory listings be produced if there -->
<!-- is no welcome file in this directory? [false] -->
<!-- WARNING: Listings for directories with many -->
<!-- entries can be slow and may consume -->
<!-- significant proportions of server resources. -->
<!-- -->
<!-- output Output buffer size (in bytes) when writing -->
<!-- resources to be served. [2048] -->
<!-- -->
<!-- readonly Is this context "read only", so HTTP -->
<!-- commands like PUT and DELETE are -->
<!-- rejected? [true] -->
<!-- -->
<!-- readmeFile File name to display with the directory -->
<!-- contents. [null] -->
<!-- -->
<!-- sendfileSize If the connector used supports sendfile, this -->
<!-- represents the minimal file size in KB for -->
<!-- which sendfile will be used. Use a negative -->
<!-- value to always disable sendfile. [48] -->
<!-- -->
<!-- For directory listing customization. Checks localXsltFile, then -->
<!-- globalXsltFile, then defaults to original behavior. -->
<!-- -->
<!-- localXsltFile Make directory listings an XML doc and -->
<!-- pass the result to this style sheet residing -->
<!-- in that directory. This overrides -->
<!-- globalXsltFile[null] -->
<!-- -->
<!-- globalXsltFile Site wide configuration version of -->
<!-- localXsltFile This argument is expected -->
<!-- to be a physical file. [null] -->
<!-- -->
<!-- -->
<servlet>
<servlet-name>default</servlet-name>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<!-- The "invoker" servlet, which executes anonymous servlet classes -->
<!-- that have not been defined in a web.xml file. Traditionally, this -->
<!-- servlet is mapped to the URL pattern "/servlet/*", but you can map -->
<!-- it to other patterns as well. The extra path info portion of such a -->
<!-- request must be the fully qualified class name of a Java class that -->
<!-- implements Servlet (or extends HttpServlet), or the servlet name -->
<!-- of an existing servlet definition. This servlet supports the -->
<!-- following initialization parameters (default values are in square -->
<!-- brackets): -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!--
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
-->

<!-- The JSP page compiler and execution servlet, which is the mechanism -->
<!-- used by Tomcat to support JSP pages. Traditionally, this servlet -->
<!-- is mapped to the URL pattern "*.jsp". This servlet supports the -->
<!-- following initialization parameters (default values are in square -->
<!-- brackets): -->
<!-- -->
<!-- checkInterval If development is false and checkInterval is -->
<!-- greater than zero, background compilations are -->
<!-- enabled. checkInterval is the time in seconds -->
<!-- between checks to see if a JSP page (and its -->
<!-- dependent files) needs to be recompiled. [0] -->
<!-- -->
<!-- classdebuginfo Should the class file be compiled with -->
<!-- debugging information? [true] -->
<!-- -->
<!-- classpath What class path should I use while compiling -->
<!-- generated servlets? [Created dynamically -->
<!-- based on the current web application] -->
<!-- -->
<!-- compiler Which compiler Ant should use to compile JSP -->
<!-- pages. See the jasper documentation for more -->
<!-- information. -->
<!-- -->
<!-- compilerSourceVM Compiler source VM -->
<!-- default is System.properties -->
<!-- java.specification.version > 1.4 -->
<!-- [1.5] else [1.4] -->
<!-- -->
<!-- compilerTargetVM Compiler target VM --> 
<!-- default is System.properties -->
<!-- java.specification.version > 1.4 -->
<!-- [1.5] else [1.4] -->
<!-- -->
<!-- development Is Jasper used in development mode? If true, -->
<!-- the frequency at which JSPs are checked for -->
<!-- modification may be specified via the -->
<!-- modificationTestInterval parameter. [true] -->
<!-- -->
<!-- displaySourceFragment -->
<!-- Should a source fragment be included in -->
<!-- exception messages? [true] -->
<!-- -->
<!-- dumpSmap Should the SMAP info for JSR45 debugging be -->
<!-- dumped to a file? [false] -->
<!-- False if suppressSmap is true -->
<!-- -->
<!-- enablePooling Determines whether tag handler pooling is -->
<!-- enabled [true] -->
<!-- -->
<!-- engineOptionsClass Allows specifying the Options class used to -->
<!-- configure Jasper. If not present, the default -->
<!-- EmbeddedServletOptions will be used. -->
<!-- -->
<!-- errorOnUseBeanInvalidClassAttribute -->
<!-- Should Jasper issue an error when the value of -->
<!-- the class attribute in an useBean action is -->
<!-- not a valid bean class? [true] -->
<!-- -->
<!-- fork Tell Ant to fork compiles of JSP pages so that -->
<!-- a separate JVM is used for JSP page compiles -->
<!-- from the one Tomcat is running in. [true] -->
<!-- -->
<!-- genStrAsCharArray Should text strings be generated as char -->
<!-- arrays, to improve performance in some cases? -->
<!-- [false] -->
<!-- -->
<!-- ieClassId The class-id value to be sent to Internet -->
<!-- Explorer when using <jsp:plugin> tags. -->
<!-- [clsid:8AD9C840-044E-11D1-B3E9-00805F499D93] -->
<!-- -->
<!-- javaEncoding Java file encoding to use for generating java -->
<!-- source files. [UTF8] -->
<!-- -->
<!-- keepgenerated Should we keep the generated Java source code -->
<!-- for each page instead of deleting it? [true] -->
<!-- -->
<!-- mappedfile Should we generate static content with one -->
<!-- print statement per input line, to ease -->
<!-- debugging? [true] -->
<!-- -->
<!-- modificationTestInterval -->
<!-- Causes a JSP (and its dependent files) to not -->
<!-- be checked for modification during the -->
<!-- specified time interval (in seconds) from the -->
<!-- last time the JSP was checked for -->
<!-- modification. A value of 0 will cause the JSP -->
<!-- to be checked on every access. -->
<!-- Used in development mode only. [4] -->
<!-- -->
<!-- scratchdir What scratch directory should we use when -->
<!-- compiling JSP pages? [default work directory -->
<!-- for the current web application] -->
<!-- -->
<!-- suppressSmap Should the generation of SMAP info for JSR45 -->
<!-- debugging be suppressed? [false] -->
<!-- -->
<!-- trimSpaces Should white spaces in template text between -->
<!-- actions or directives be trimmed? [false] -->
<!-- -->
<!-- xpoweredBy Determines whether X-Powered-By response -->
<!-- header is added by generated servlet [false] -->
<!-- -->
<!-- If you wish to use Jikes to compile JSP pages: -->
<!-- Please see the "Using Jikes" section of the Jasper-HowTo -->
<!-- page in the Tomcat documentation. -->
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>

<!-- NOTE: An SSI Filter is also available as an alternative SSI -->
<!-- implementation. Use either the Servlet or the Filter but NOT both. -->
<!-- -->
<!-- Server Side Includes processing servlet, which processes SSI -->
<!-- directives in HTML pages consistent with similar support in web -->
<!-- servers like Apache. Traditionally, this servlet is mapped to the -->
<!-- URL pattern "*.shtml". This servlet supports the following -->
<!-- initialization parameters (default values are in square brackets): -->
<!-- -->
<!-- buffered Should output from this servlet be buffered? -->
<!-- (0=false, 1=true) [0] -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- expires The number of seconds before a page with SSI -->
<!-- directives will expire. [No default] -->
<!-- -->
<!-- isVirtualWebappRelative -->
<!-- Should "virtual" paths be interpreted as -->
<!-- relative to the context root, instead of -->
<!-- the server root? (0=false, 1=true) [0] -->
<!-- -->
<!-- inputEncoding The encoding to assume for SSI resources if -->
<!-- one is not available from the resource. -->
<!-- [Platform default] -->
<!-- -->
<!-- outputEncoding The encoding to use for the page that results -->
<!-- from the SSI processing. [UTF-8] -->
<!--
<servlet>
<servlet-name>ssi</servlet-name>
<servlet-class>
org.apache.catalina.ssi.SSIServlet
</servlet-class>
<init-param>
<param-name>buffered</param-name>
<param-value>1</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>expires</param-name>
<param-value>666</param-value>
</init-param>
<init-param>
<param-name>isVirtualWebappRelative</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>4</load-on-startup>
</servlet>
-->

<!-- Common Gateway Includes (CGI) processing servlet, which supports -->
<!-- execution of external applications that conform to the CGI spec -->
<!-- requirements. Typically, this servlet is mapped to the URL pattern -->
<!-- "/cgi-bin/*", which means that any CGI applications that are -->
<!-- executed must be present within the web application. This servlet -->
<!-- supports the following initialization parameters (default values -->
<!-- are in square brackets): -->
<!-- -->
<!-- cgiPathPrefix The CGI search path will start at -->
<!-- webAppRootDir + File.separator + this prefix. -->
<!-- [WEB-INF/cgi] -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- executable Name of the exectuable used to run the -->
<!-- script. [perl] -->
<!-- -->
<!-- parameterEncoding Name of parameter encoding to be used with -->
<!-- CGI servlet. -->
<!-- [System.getProperty("file.encoding","UTF-8")] -->
<!-- -->
<!-- passShellEnvironment Should the shell environment variables (if -->
<!-- any) be passed to the CGI script? [false] -->
<!--
<servlet>
<servlet-name>cgi</servlet-name>
<servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>cgiPathPrefix</param-name>
<param-value>WEB-INF/cgi</param-value>
</init-param>
<load-on-startup>5</load-on-startup>
</servlet>
-->

<!-- ================ Built In Servlet Mappings ========================= -->

<!-- The servlet mappings for the built in servlets defined above. Note -->
<!-- that, by default, the CGI and SSI servlets are *not* mapped. You -->
<!-- must uncomment these mappings (or add them to your application's own -->
<!-- web.xml deployment descriptor) to enable these services -->
<!-- The mapping for the default servlet -->
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- The mapping for the invoker servlet -->
<!--
<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>
-->
<!-- The mapping for the JSP servlet -->
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jspx</url-pattern>
</servlet-mapping>
<!-- The mapping for the SSI servlet -->
<!--
<servlet-mapping>
<servlet-name>ssi</servlet-name>
<url-pattern>*.shtml</url-pattern>
</servlet-mapping>
-->
<!-- The mapping for the CGI Gateway servlet -->
<!--
<servlet-mapping>
<servlet-name>cgi</servlet-name>
<url-pattern>/cgi-bin/*</url-pattern>
</servlet-mapping>
-->

<!-- ================== Built In Filter Definitions ===================== -->
<!-- NOTE: An SSI Servlet is also available as an alternative SSI -->
<!-- implementation. Use either the Servlet or the Filter but NOT both. -->
<!-- -->
<!-- Server Side Includes processing filter, which processes SSI -->
<!-- directives in HTML pages consistent with similar support in web -->
<!-- servers like Apache. Traditionally, this filter is mapped to the -->
<!-- URL pattern "*.shtml", though it can be mapped to "*" as it will -->
<!-- selectively enable/disable SSI processing based on mime types. For -->
<!-- this to work you will need to uncomment the .shtml mime type -->
<!-- definition towards the bottom of this file. -->
<!-- The contentType init param allows you to apply SSI processing to JSP -->
<!-- pages, javascript, or any other content you wish. This filter -->
<!-- supports the following initialization parameters (default values are -->
<!-- in square brackets): -->
<!-- -->
<!-- contentType A regex pattern that must be matched before -->
<!-- SSI processing is applied. -->
<!-- [text/x-server-parsed-html(;.*)?] -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- expires The number of seconds before a page with SSI -->
<!-- directives will expire. [No default] -->
<!-- -->
<!-- isVirtualWebappRelative -->
<!-- Should "virtual" paths be interpreted as -->
<!-- relative to the context root, instead of -->
<!-- the server root? (0=false, 1=true) [0] -->
<!--
<filter>
<filter-name>ssi</filter-name>
<filter-class>
org.apache.catalina.ssi.SSIFilter
</filter-class>
<init-param>
<param-name>contentType</param-name>
<param-value>text/x-server-parsed-html(;.*)?</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>expires</param-name>
<param-value>666</param-value>
</init-param>
<init-param>
<param-name>isVirtualWebappRelative</param-name>
<param-value>0</param-value>
</init-param>
</filter>
-->

<!-- ==================== Built In Filter Mappings ====================== -->
<!-- The mapping for the SSI Filter -->
<!--
<filter-mapping>
<filter-name>ssi</filter-name>
<url-pattern>*.shtml</url-pattern>
</filter-mapping>
-->

<!-- ==================== Default Session Configuration ================= -->
<!-- You can set the default session timeout (in minutes) for all newly -->
<!-- created sessions by modifying the value below. -->
<session-config>
<session-timeout>30</session-timeout>
</session-config>

<!-- ===================== Default MIME Type Mappings =================== -->
<!-- When serving static resources, Tomcat will automatically generate -->
<!-- a "Content-Type" header based on the resource's filename extension, -->
<!-- based on these mappings. Additional mappings can be added here (to -->
<!-- apply to all web applications), or in your own application's web.xml -->
<!-- deployment descriptor. -->
<mime-mapping>
<extension>abs</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ai</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aif</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aifc</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aiff</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aim</extension>
<mime-type>application/x-aim</mime-type>
</mime-mapping>
<mime-mapping>
<extension>art</extension>
<mime-type>image/x-jg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>asf</extension>
<mime-type>video/x-ms-asf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>asx</extension>
<mime-type>video/x-ms-asf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>au</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>avi</extension>
<mime-type>video/x-msvideo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>avx</extension>
<mime-type>video/x-rad-screenplay</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bcpio</extension>
<mime-type>application/x-bcpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bin</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bmp</extension>
<mime-type>image/bmp</mime-type>
</mime-mapping>
<mime-mapping>
<extension>body</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cdf</extension>
<mime-type>application/x-cdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cer</extension>

<mime-type>application/x-x509-ca-cert</mime-type>
</mime-mapping>
<mime-mapping>
<extension>class</extension>
<mime-type>application/java</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cpio</extension>
<mime-type>application/x-cpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>csh</extension>
<mime-type>application/x-csh</mime-type>
</mime-mapping>
<mime-mapping>
<extension>css</extension>
<mime-type>text/css</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dib</extension>
<mime-type>image/bmp</mime-type>
</mime-mapping>
<mime-mapping>
<extension>doc</extension>
<mime-type>application/msword</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dtd</extension>
<mime-type>application/xml-dtd</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dv</extension>
<mime-type>video/x-dv</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dvi</extension>
<mime-type>application/x-dvi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>eps</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>etx</extension>
<mime-type>text/x-setext</mime-type>
</mime-mapping>
<mime-mapping>
<extension>exe</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gif</extension>
<mime-type>image/gif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gtar</extension>
<mime-type>application/x-gtar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gz</extension>
<mime-type>application/x-gzip</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hdf</extension>
<mime-type>application/x-hdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hqx</extension>
<mime-type>application/mac-binhex40</mime-type>
</mime-mapping>
<mime-mapping>
<extension>htc</extension>
<mime-type>text/x-component</mime-type>
</mime-mapping>
<mime-mapping>
<extension>htm</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hqx</extension>
<mime-type>application/mac-binhex40</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ief</extension>
<mime-type>image/ief</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jad</extension>
<mime-type>text/vnd.sun.j2me.app-descriptor</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jar</extension>
<mime-type>application/java-archive</mime-type>
</mime-mapping>
<mime-mapping>
<extension>java</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jnlp</extension>
<mime-type>application/x-java-jnlp-file</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpe</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpeg</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpg</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>js</extension>
<mime-type>text/javascript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jsf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jspf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>kar</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>latex</extension>
<mime-type>application/x-latex</mime-type>
</mime-mapping>
<mime-mapping>
<extension>m3u</extension>
<mime-type>audio/x-mpegurl</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mac</extension>
<mime-type>image/x-macpaint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>man</extension>
<mime-type>application/x-troff-man</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mathml</extension>
<mime-type>application/mathml+xml</mime-type> 
</mime-mapping>
<mime-mapping>
<extension>me</extension>
<mime-type>application/x-troff-me</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mid</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>midi</extension>

<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mif</extension>
<mime-type>application/x-mif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mov</extension>
<mime-type>video/quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>movie</extension>
<mime-type>video/x-sgi-movie</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp1</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp2</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp3</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp4</extension>
<mime-type>video/mp4</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpa</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpe</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpeg</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpega</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpg</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpv2</extension>
<mime-type>video/mpeg2</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ms</extension>
<mime-type>application/x-wais-source</mime-type>
</mime-mapping>
<mime-mapping>
<extension>nc</extension>
<mime-type>application/x-netcdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>oda</extension>
<mime-type>application/oda</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Database -->
<extension>odb</extension>
<mime-type>application/vnd.oasis.opendocument.database</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Chart -->
<extension>odc</extension>
<mime-type>application/vnd.oasis.opendocument.chart</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Formula -->
<extension>odf</extension>
<mime-type>application/vnd.oasis.opendocument.formula</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Drawing -->
<extension>odg</extension>
<mime-type>application/vnd.oasis.opendocument.graphics</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Image -->
<extension>odi</extension>
<mime-type>application/vnd.oasis.opendocument.image</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Master Document -->
<extension>odm</extension>
<mime-type>application/vnd.oasis.opendocument.text-master</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Presentation -->
<extension>odp</extension>
<mime-type>application/vnd.oasis.opendocument.presentation</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Spreadsheet -->
<extension>ods</extension>
<mime-type>application/vnd.oasis.opendocument.spreadsheet</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Text -->
<extension>odt</extension>
<mime-type>application/vnd.oasis.opendocument.text</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ogg</extension>
<mime-type>application/ogg</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Drawing Template -->
<extension>otg </extension>
<mime-type>application/vnd.oasis.opendocument.graphics-template</mime-type>
</mime-mapping>
<mime-mapping>
<!-- HTML Document Template -->
<extension>oth</extension>
<mime-type>application/vnd.oasis.opendocument.text-web</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Presentation Template -->
<extension>otp</extension>
<mime-type>application/vnd.oasis.opendocument.presentation-template</mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Spreadsheet Template -->
<extension>ots</extension>
<mime-type>application/vnd.oasis.opendocument.spreadsheet-template </mime-type>
</mime-mapping>
<mime-mapping>
<!-- OpenDocument Text Template -->
<extension>ott</extension>
<mime-type>application/vnd.oasis.opendocument.text-template</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pbm</extension>
<mime-type>image/x-portable-bitmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pct</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pdf</extension>
<mime-type>application/pdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pgm</extension>
<mime-type>image/x-portable-graymap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pic</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pict</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pls</extension>
<mime-type>audio/x-scpls</mime-type>
</mime-mapping>
<mime-mapping>
<extension>png</extension>
<mime-type>image/png</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pnm</extension>
<mime-type>image/x-portable-anymap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pnt</extension>
<mime-type>image/x-macpaint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppm</extension>
<mime-type>image/x-portable-pixmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppt</extension>
<mime-type>application/powerpoint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ps</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>psd</extension>
<mime-type>image/x-photoshop</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qt</extension>
<mime-type>video/quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qti</extension>
<mime-type>image/x-quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qtif</extension>
<mime-type>image/x-quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ras</extension>
<mime-type>image/x-cmu-raster</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rdf</extension>
<mime-type>application/rdf+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rgb</extension>
<mime-type>image/x-rgb</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rm</extension>
<mime-type>application/vnd.rn-realmedia</mime-type>
</mime-mapping>
<mime-mapping>
<extension>roff</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rtf</extension>
<mime-type>application/rtf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rtx</extension>
<mime-type>text/richtext</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sh</extension>
<mime-type>application/x-sh</mime-type>
</mime-mapping>
<mime-mapping>
<extension>shar</extension>
<mime-type>application/x-shar</mime-type>
</mime-mapping>
<!--
<mime-mapping>
<extension>shtml</extension>
<mime-type>text/x-server-parsed-html</mime-type>
</mime-mapping>
-->
<mime-mapping>
<extension>smf</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sit</extension>
<mime-type>application/x-stuffit</mime-type>
</mime-mapping>
<mime-mapping>
<extension>snd</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>src</extension>
<mime-type>application/x-wais-source</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sv4cpio</extension>
<mime-type>application/x-sv4cpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sv4crc</extension>
<mime-type>application/x-sv4crc</mime-type>
</mime-mapping>
<mime-mapping>
<extension>swf</extension>
<mime-type>application/x-shockwave-flash</mime-type>
</mime-mapping>
<mime-mapping>
<extension>t</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tar</extension>
<mime-type>application/x-tar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tcl</extension>
<mime-type>application/x-tcl</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tex</extension>
<mime-type>application/x-tex</mime-type>
</mime-mapping>
<mime-mapping>
<extension>texi</extension>
<mime-type>application/x-texinfo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>texinfo</extension>
<mime-type>application/x-texinfo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tif</extension>
<mime-type>image/tiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tiff</extension>
<mime-type>image/tiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tr</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tsv</extension>
<mime-type>text/tab-separated-values</mime-type>
</mime-mapping>
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ulw</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ustar</extension>
<mime-type>application/x-ustar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>vxml</extension>
<mime-type>application/voicexml+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xbm</extension>
<mime-type>image/x-xbitmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xht</extension>
<mime-type>application/xhtml+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xhtml</extension>
<mime-type>application/xhtml+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xml</extension>
<mime-type>application/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xpm</extension>
<mime-type>image/x-xpixmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xsl</extension>
<mime-type>application/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xslt</extension>
<mime-type>application/xslt+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xul</extension>
<mime-type>application/vnd.mozilla.xul+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xwd</extension>
<mime-type>image/x-xwindowdump</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wav</extension>
<mime-type>audio/x-wav</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svg</extension>
<mime-type>image/svg+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svgz</extension>
<mime-type>image/svg+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>vsd</extension>
<mime-type>application/x-visio</mime-type>
</mime-mapping>
<mime-mapping>
<!-- Wireless Bitmap -->
<extension>wbmp</extension>
<mime-type>image/vnd.wap.wbmp</mime-type>
</mime-mapping>
<mime-mapping>
<!-- WML Source -->
<extension>wml</extension>
<mime-type>text/vnd.wap.wml</mime-type>
</mime-mapping>
<mime-mapping>
<!-- Compiled WML -->
<extension>wmlc</extension>
<mime-type>application/vnd.wap.wmlc</mime-type>
</mime-mapping>
<mime-mapping>
<!-- WML Script Source -->
<extension>wmls</extension>
<mime-type>text/vnd.wap.wmlscript</mime-type>
</mime-mapping>
<mime-mapping>
<!-- Compiled WML Script -->
<extension>wmlscriptc</extension>
<mime-type>application/vnd.wap.wmlscriptc</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wmv</extension>
<mime-type>video/x-ms-wmv</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wrl</extension>
<mime-type>x-world/x-vrml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wspolicy</extension>
<mime-type>application/wspolicy+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>Z</extension>
<mime-type>application/x-compress</mime-type>
</mime-mapping>
<mime-mapping>
<extension>z</extension>
<mime-type>application/x-compress</mime-type>
</mime-mapping>
<mime-mapping>
<extension>zip</extension>
<mime-type>application/zip</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xls</extension>
<mime-type>application/vnd.ms-excel</mime-type>
</mime-mapping>
<mime-mapping>
<extension>doc</extension>
<mime-type>application/vnd.ms-word</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppt</extension>
<mime-type>application/vnd.ms-powerpoint</mime-type>
</mime-mapping>
<!-- ==================== Default Welcome File List ===================== -->
<!-- When a request URI refers to a directory, the default servlet looks -->
<!-- for a "welcome file" within that directory and, if present, -->
<!-- to the corresponding resource URI for display. If no welcome file -->
<!-- is present, the default servlet either serves a directory listing, -->
<!-- or returns a 404 status, depending on how it is configured. -->
<!-- -->
<!-- If you define welcome files in your own application's web.xml -->
<!-- deployment descriptor, that list *replaces* the list configured -->
<!-- here, so be sure that you include any of the default values that -->
<!-- you wish to include. -->
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

         3>catalina.bat(tomcat/bin)這個文件只是添加了一個對tomcat內存優化配置的更改(前兩行)

catalina.bat
  1 set CATALINA_OPTS=-Xms256m -Xmx256m 
  2 set JAVA_OPTS=-Xms256m -Xmx256m
  3 @echo off
  4 rem Licensed to the Apache Software Foundation (ASF) under one or more
  5 rem contributor license agreements.  See the NOTICE file distributed with
  6 rem this work for additional information regarding copyright ownership.
  7 rem The ASF licenses this file to You under the Apache License, Version 2.0
  8 rem (the "License"); you may not use this file except in compliance with
  9 rem the License.  You may obtain a copy of the License at
 10 rem
 11 rem     http://www.apache.org/licenses/LICENSE-2.0
 12 rem
 13 rem Unless required by applicable law or agreed to in writing, software
 14 rem distributed under the License is distributed on an "AS IS" BASIS,
 15 rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 16 rem See the License for the specific language governing permissions and
 17 rem limitations under the License.
 18 
 19 if "%OS%" == "Windows_NT" setlocal
 20 rem ---------------------------------------------------------------------------
 21 rem Start/Stop Script for the CATALINA Server
 22 rem
 23 rem Environment Variable Prequisites
 24 rem
 25 rem   CATALINA_HOME   May point at your Catalina "build" directory.
 26 rem
 27 rem   CATALINA_BASE   (Optional) Base directory for resolving dynamic portions
 28 rem                   of a Catalina installation.  If not present, resolves to
 29 rem                   the same directory that CATALINA_HOME points to.
 30 rem
 31 rem   CATALINA_OPTS   (Optional) Java runtime options used when the "start",
 32 rem                   or "run" command is executed.
 33 rem
 34 rem   CATALINA_TMPDIR (Optional) Directory path location of temporary directory
 35 rem                   the JVM should use (java.io.tmpdir).  Defaults to
 36 rem                   %CATALINA_BASE%\temp.
 37 rem
 38 rem   JAVA_HOME       Must point at your Java Development Kit installation.
 39 rem                   Required to run the with the "debug" argument.
 40 rem
 41 rem   JRE_HOME        Must point at your Java Runtime installation.
 42 rem                   Defaults to JAVA_HOME if empty.
 43 rem
 44 rem   JAVA_OPTS       (Optional) Java runtime options used when the "start",
 45 rem                   "stop", or "run" command is executed.
 46 rem
 47 rem   JSSE_HOME       (Optional) May point at your Java Secure Sockets Extension
 48 rem                   (JSSE) installation, whose JAR files will be added to the
 49 rem                   system class path used to start Tomcat.
 50 rem
 51 rem   JPDA_TRANSPORT  (Optional) JPDA transport used when the "jpda start"
 52 rem                   command is executed. The default is "dt_shmem".
 53 rem
 54 rem   JPDA_ADDRESS    (Optional) Java runtime options used when the "jpda start"
 55 rem                   command is executed. The default is "jdbconn".
 56 rem
 57 rem   JPDA_SUSPEND    (Optional) Java runtime options used when the "jpda start"
 58 rem                   command is executed. Specifies whether JVM should suspend
 59 rem                   execution immediately after startup. Default is "n".
 60 rem
 61 rem   JPDA_OPTS       (Optional) Java runtime options used when the "jpda start"
 62 rem                   command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS,
 63 rem                   and JPDA_SUSPEND are ignored. Thus, all required jpda
 64 rem                   options MUST be specified. The default is:
 65 rem
 66 rem                   -Xdebug -Xrunjdwp:transport=%JPDA_TRANSPORT%,
 67 rem                       address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND%
 68 rem
 69 rem $Id: catalina.bat 656834 2008-05-15 21:04:04Z markt $
 70 rem ---------------------------------------------------------------------------
 71 
 72 rem Guess CATALINA_HOME if not defined
 73 set CURRENT_DIR=%cd%
 74 if not "%CATALINA_HOME%" == "" goto gotHome
 75 set CATALINA_HOME=%CURRENT_DIR%
 76 if exist "%CATALINA_HOME%\bin\catalina.bat" goto okHome
 77 cd ..
 78 set CATALINA_HOME=%cd%
 79 cd %CURRENT_DIR%
 80 :gotHome
 81 if exist "%CATALINA_HOME%\bin\catalina.bat" goto okHome
 82 echo The CATALINA_HOME environment variable is not defined correctly
 83 echo This environment variable is needed to run this program
 84 goto end
 85 :okHome
 86 
 87 rem Get standard environment variables
 88 if "%CATALINA_BASE%" == "" goto gotSetenvHome
 89 if exist "%CATALINA_BASE%\bin\setenv.bat" call "%CATALINA_BASE%\bin\setenv.bat"
 90 goto gotSetenvBase
 91 :gotSetenvHome
 92 if exist "%CATALINA_HOME%\bin\setenv.bat" call "%CATALINA_HOME%\bin\setenv.bat"
 93 :gotSetenvBase
 94 
 95 rem Get standard Java environment variables
 96 if exist "%CATALINA_HOME%\bin\setclasspath.bat" goto okSetclasspath
 97 echo Cannot find %CATALINA_HOME%\bin\setclasspath.bat
 98 echo This file is needed to run this program
 99 goto end
100 :okSetclasspath
101 set BASEDIR=%CATALINA_HOME%
102 call "%CATALINA_HOME%\bin\setclasspath.bat" %1
103 if errorlevel 1 goto end
104 
105 rem Add on extra jar files to CLASSPATH
106 if "%JSSE_HOME%" == "" goto noJsse
107 set CLASSPATH=%CLASSPATH%;%JSSE_HOME%\lib\jcert.jar;%JSSE_HOME%\lib\jnet.jar;%JSSE_HOME%\lib\jsse.jar
108 :noJsse
109 set CLASSPATH=%CLASSPATH%;%CATALINA_HOME%\bin\bootstrap.jar
110 
111 if not "%CATALINA_BASE%" == "" goto gotBase
112 set CATALINA_BASE=%CATALINA_HOME%
113 :gotBase
114 
115 if not "%CATALINA_TMPDIR%" == "" goto gotTmpdir
116 set CATALINA_TMPDIR=%CATALINA_BASE%\temp
117 :gotTmpdir
118 
119 if not exist "%CATALINA_BASE%\conf\logging.properties" goto noJuli
120 set JAVA_OPTS=%JAVA_OPTS% -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file="%CATALINA_BASE%\conf\logging.properties"
121 :noJuli
122 
123 rem ----- Execute The Requested Command ---------------------------------------
124 
125 echo Using CATALINA_BASE:   %CATALINA_BASE%
126 echo Using CATALINA_HOME:   %CATALINA_HOME%
127 echo Using CATALINA_TMPDIR: %CATALINA_TMPDIR%
128 if ""%1"" == ""debug"" goto use_jdk
129 echo Using JRE_HOME:        %JRE_HOME%
130 goto java_dir_displayed
131 :use_jdk
132 echo Using JAVA_HOME:       %JAVA_HOME%
133 :java_dir_displayed
134 
135 set _EXECJAVA=%_RUNJAVA%
136 set MAINCLASS=org.apache.catalina.startup.Bootstrap
137 set ACTION=start
138 set SECURITY_POLICY_FILE=
139 set DEBUG_OPTS=
140 set JPDA=
141 
142 if not ""%1"" == ""jpda"" goto noJpda
143 set JPDA=jpda
144 if not "%JPDA_TRANSPORT%" == "" goto gotJpdaTransport
145 set JPDA_TRANSPORT=dt_shmem
146 :gotJpdaTransport
147 if not "%JPDA_ADDRESS%" == "" goto gotJpdaAddress
148 set JPDA_ADDRESS=jdbconn
149 :gotJpdaAddress
150 if not "%JPDA_SUSPEND%" == "" goto gotJpdaSuspend
151 set JPDA_SUSPEND=n
152 :gotJpdaSuspend
153 if not "%JPDA_OPTS%" == "" goto gotJpdaOpts
154 set JPDA_OPTS=-agentlib:jdwp=transport=%JPDA_TRANSPORT%,address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND%
155 :gotJpdaOpts
156 shift
157 :noJpda
158 
159 if ""%1"" == ""debug"" goto doDebug
160 if ""%1"" == ""run"" goto doRun
161 if ""%1"" == ""start"" goto doStart
162 if ""%1"" == ""stop"" goto doStop
163 if ""%1"" == ""version"" goto doVersion
164 
165 echo Usage:  catalina ( commands ... )
166 echo commands:
167 echo   debug             Start Catalina in a debugger
168 echo   debug -security   Debug Catalina with a security manager
169 echo   jpda start        Start Catalina under JPDA debugger
170 echo   run               Start Catalina in the current window
171 echo   run -security     Start in the current window with security manager
172 echo   start             Start Catalina in a separate window
173 echo   start -security   Start in a separate window with security manager
174 echo   stop              Stop Catalina
175 echo   version           What version of tomcat are you running?
176 goto end
177 
178 :doDebug
179 shift
180 set _EXECJAVA=%_RUNJDB%
181 set DEBUG_OPTS=-sourcepath "%CATALINA_HOME%\..\..\java"
182 if not ""%1"" == ""-security"" goto execCmd
183 shift
184 echo Using Security Manager
185 set SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy
186 goto execCmd
187 
188 :doRun
189 shift
190 if not ""%1"" == ""-security"" goto execCmd
191 shift
192 echo Using Security Manager
193 set SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy
194 goto execCmd
195 
196 :doStart
197 shift
198 if not "%OS%" == "Windows_NT" goto noTitle
199 set _EXECJAVA=start "Tomcat" %_RUNJAVA%
200 goto gotTitle
201 :noTitle
202 set _EXECJAVA=start %_RUNJAVA%
203 :gotTitle
204 if not ""%1"" == ""-security"" goto execCmd
205 shift
206 echo Using Security Manager
207 set SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy
208 goto execCmd
209 
210 :doStop
211 shift
212 set ACTION=stop
213 set CATALINA_OPTS=
214 goto execCmd
215 
216 :doVersion
217 %_EXECJAVA% -classpath "%CATALINA_HOME%\lib\catalina.jar" org.apache.catalina.util.ServerInfo
218 goto end
219 
220 
221 :execCmd
222 rem Get remaining unshifted command line arguments and save them in the
223 set CMD_LINE_ARGS=
224 :setArgs
225 if ""%1""=="""" goto doneSetArgs
226 set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1
227 shift
228 goto setArgs
229 :doneSetArgs
230 
231 rem Execute Java with the applicable properties
232 if not "%JPDA%" == "" goto doJpda
233 if not "%SECURITY_POLICY_FILE%" == "" goto doSecurity
234 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
235 goto end
236 :doSecurity
237 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
238 goto end
239 :doJpda
240 if not "%SECURITY_POLICY_FILE%" == "" goto doSecurityJpda
241 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
242 goto end
243 :doSecurityJpda
244 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
245 goto end
246 
247 :end

                以上最后的兩個文件及前面有些配置使用該優化tomcat和jdk的,配置完成后的各個配置文件,具體操作步驟如下:

  (1)負載均衡 

    找到Apache安裝目錄下conf目錄中的httpd.conf文件。
    在文件最后添加一句:include "D:\webserver\Apache Group\Apache2\conf\mod_jk.conf"(具體路徑是你放置的位置而定)
    接着在conf目錄中新建文件mod_jk.conf並添加下面的內容:
      #加載mod_jk Module
      LoadModule jk_module modules/mod_jk-apache-2.0.59.so
      #指定 workers.properties文件路徑
      JkWorkersFile conf/workers.properties
      #指定哪些請求交給tomcat處理,"controller"為在workers.propertise里指定的負載分配控制器名
      JkMount /*.jsp controller  

    在conf目錄下新建workers.properties文件並添加如下內容:
    #server
    worker.list = controller
    #========tomcat1========
    worker.tomcat1.port=11009
    worker.tomcat1.host=localhost
    worker.tomcat1.type=ajp13
    worker.tomcat1.lbfactor = 1
    #========tomcat2========
    worker.tomcat2.port=12009
    worker.tomcat2.host=localhost
    worker.tomcat2.type=ajp13
    worker.tomcat2.lbfactor = 1
    #(解釋一下AJP13是 Apache JServ Protocol version 1.3)
    #========controller,負載均衡控制器========
    worker.controller.type=lb
    worker.controller.balanced_workers=tomcat1,tomcat2
    worker.controller.sticky_session=1

    將mod_jk-apache-2.0.59.so 復制到Apache的modules目錄中。

    接下來配置2個Tomcat
    打開tomcat1\conf\ server.xml
    將Server port 改為11005:<Server port="11005" shutdown="SHUTDOWN">
    將Define Connector port改為11080:<Connector port="11080" maxHttpHeaderSize="8192"
    將AJP13 Connector port改為11009:<Connector port="11009" enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />

    打開tomcat2\conf\server.xml
    將Server port 改為12005:<Server port="12005" shutdown="SHUTDOWN">
    將Define Connector port改為12080:<Connector port="12080" maxHttpHeaderSize="8192"
    將AJP13 Connector port改為12009:<Connector port="12009" enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />

    好了,現在建立一個測試程序
    分別在兩個Tomcat的webapps中建立test目錄,並新建test.jsp文件,內容如下:
    <%
      System.out.println("test");
    %>

    啟動apache, tomcat1, tomcat2
    訪問http://localhost:8080/test/test.jsp (或者 http://localhost/test/test.jsp)不斷刷新頁面,看不到交替輸出"test",你需要換兩台機器或者開兩個瀏覽器(即兩個會話)這樣可以在兩個Tomcat的控制台中看到,交替輸出"test", 這樣就實現了負載均衡,由於沒有開啟session共享所以一次會話集中到了一個toamcat上多個會話會分配道不同的tomact中。

   (2)集群配置

    集群除了負載均衡,另一個主要功能是Session Replication。
    打開tomcat1\conf\ server.xml將<Cluster>部分的注釋去掉。
    再打開tomcat2\conf\ server.xml將<Cluster>部分的注釋也去掉,並將<Cluster>中<Receiver>的tcpListenPort的值改為4002。以避免與Tomcat1沖突。

    分別在2個tomcat的webapps\test中新建WEB-INF目錄,在WEB-INF中添加web.xml內容如下:
      <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"                         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
        <display-name>TomcatDemo</display-name>
        <distributable/>
      </web-app>
    主要是添加<distributable/>,distributable元素用來告訴servlet容器,程序將部署在分布式Web容器中。
    重新啟動tomcat1和tomcat2. 訪問http://localhost:8080/test/test2.jsp (或http://localhost/test/test2.jsp)
    隨意添加key-value, 可以看到兩個tomcat交替顯示session中的值,各個tomcat的session是同步的。

    再來修改tomcat1\conf\server.xml,找到<Engine name="Catalina" defaultHost="localhost">為其添加jvmRoute屬性,值為apache的conf\workers.properties中配置的tomcat名字。<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">
    同樣修改tomcat2\conf\server.xml的相同部分<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2">jvmRoute是tomcat路由標示,由此區分兩台tomcat主機。一次會話,就有一個sessionID,這個sessionID后面會跟上jvmRoute設置的值,這樣一次會話,就只會讓一個tomcat處理。
    重新啟動tomcat1, tomcat2
    訪問http://localhost:8080/test/test2.jsp 可以看到session.getId()的值在原session id后面多了jvmRoute的值。ID 46A5843FF4A1E0A84338225AC02F6430.tomcat1
    隨意添加key-value,可以看到session信息只在tomcat1中輸出。
    再打開一個瀏覽器,並訪問http://localhost:8080/test/test2.jsp 其session id可能變為ID 11478E5BE5FE388E4845205B4133A30F.tomcat2
    其值也只會在tomcat2中輸出。
    現在把tomcat1關閉,再次刷新訪問tomcat1的那個瀏覽器,可以看到session信息輸出到了tomcat2的控制台中,並且session信息仍然保留着。

  2. Apache 2.2以后集成了mod_jk功能,相對於1.3版本,不需要再進行繁瑣的worker.properties配置,配置過程大幅簡化。

       (1)apache的配置

            a. 首先,在Apache安裝目錄下找到conf/httpd.conf文件,以文本編輯器打開。去掉以下文本前的注釋符(#)以便讓Apache在啟動時自動加載代理(proxy)模塊。

LoadModule proxy_module modules/mod_proxy.so 
LoadModule proxy_ajp_module modules/mod_proxy_ajp.so 
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so 
LoadModule proxy_connect_module modules/mod_proxy_connect.so 
LoadModule proxy_ftp_module modules/mod_proxy_ftp.so 
LoadModule proxy_http_module modules/mod_proxy_http.so

 

          b. 向下拉動文檔找到節點,在DirectoryIndex index.html后加上index.jsp,這一步只是為了待會配置完tomcat后能看到小貓首頁,可以不做。
        c. 繼續下拉文檔找到"Include conf/extra/httpd-vhosts.conf",去掉前面的注釋符。
          然后找到conf/extra/httpd-vhosts.conf文件,用文本編輯器打開conf/extra/httpd-vhosts.conf,配置虛擬站點,在最下面加上

<VirtualHost *:80> 
  ServerAdmin 管理員郵箱 
  ServerName localhost(沒有可用IP地址代替) 
  ServerAlias localhost 
  ProxyPass / balancer://cluster/ stickysession=jsessionid nofailover=On 
  ProxyPassReverse / balancer://cluster/ 
  ErrorLog "logs/lbtest-error.log" 
  CustomLog "logs/lbtest-access.log" common 
</VirtualHost>

     d. 這里balancer://是告訴Apache需要進行負載均衡的代理,后面的cluster是集群名,可以隨意取,兩個日志引擎ErrorLog負責記錄錯誤,CustomLog負責記錄所有的http訪問以及返回狀態,日志名可以自己取,筆者取為lbtest。httpd-vhosts.conf配置完畢,回到httpd.conf,在文檔最下面加上    

ProxyRequests Off 
<proxy balancer://cluster> 
 BalancerMember ajp://127.0.0.1:8009 loadfactor=1 route=jvm1 
 BalancerMember ajp://127.0.0.1:9009 loadfactor=1 route=jvm2 
</proxy> 

     ProxyRequests Off 是告訴Apache需要使用反向代理(利用Apache進行負載均衡必須使用反向代理,用於配置工作在tomcat集群中的所有節點,這里的"cluster"必須與上面的集群名保持一致。
     Apache通過ajp協議與tomcat進行通信,ip地址和端口唯一確定了tomcat節點和配置的ajp接受端口。loadfactor是負載因子,Apache會按負載因子的比例向后端tomcat節點轉發請求,負載因子越大,對應的tomcat服務器就會處理越多的請求,如兩個tomcat都是1,Apache就按1:1的比例轉發,如果是2和1就按2:1的比例轉發。route參數對應后續tomcat配置中的引擎路徑(jvmRoute)。
     重啟Apache服務,如果此時訪問http://localhost/將會返回503錯誤,打開剛才配置的錯誤日志logs/lbtest-error.log,可以看到錯誤原因是因為后台服務器沒有響應,因為此時tomcat尚未配置和啟動。

   (2)tomcat配置

           如果僅僅為了配置一個可用的集群,Tomcat的配置將會非常簡單。分別打開t1和t2的server.xml配置文件,對於t1,盡量采用默認的設置,而對t2作較大改動以避免與t1沖突。如果t2和t1不在同一台服務器上運行,對於端口就不需做改動
      a. 首先是配置關閉端口,找到,t1不變,把t2改為9005。
      b. 下面配置Connector的端口,找到non-SSL HTTP/1.1 Connector,即tomcat單獨工作時的默認Connector,保留t1默認配置,在8080端口偵聽,而把t2設置為在9080端口偵聽。
      c. 往下找到AJP 1.3 Connector,<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />,這是tomcat接收從Apache過來的ajp連接請求時使用的端口,保留t1默認設置,把t2端口改為9009。注意,這里的端口對應Apache httpd.conf中BalancerMember中配置的ajp連接端口
      d. 繼續向下配置引擎,找到<Engine name="Catalina" defaultHost="localhost">,去掉這段或改為注釋,把上方緊挨的<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">注釋符去掉,對於t2,去掉注釋符並把jvm1改為jvm2。這里的jvmRoute對應Apache httpd.conf中BalancerMember中配置的route參數
      e. 向下找到<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>,打開注釋,這里的配置是為了可以在集群中的所有tomcat節點間共享會話(Session)。如果僅僅為了獲得一個可用的tomcat集群,Cluster只需要這么配置就可以了,對於更多的Cluster配置筆者將另文解釋
       server.xml的配置修改完畢,下一步需要對具體的應用進行配置。在webapps目錄下新建test目錄,在test目錄下新建test.jsp文件,代碼如下:

test.jsp
 1 ?<%@ page contentType="text/html; charset=GBK" %>  
 2 <%@ page import="java.util.*" %>  
 3 <html>
 4     <head>
 5         <title>Cluster App Test</title>
 6     </head>  
 7 <body>
 8   Server Info:   
 9     <%  out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>  
10     <%  out.println("<br> ID " + session.getId()+"<br>");      
11         String dataName = request.getParameter("dataName");     
12         if (dataName != null && dataName.length() > 0) {        
13             String dataValue = request.getParameter("dataValue");        
14             session.setAttribute(dataName, dataValue);     
15         }           
16         out.print("<b>Session 列表</b>");           
17         Enumeration e = session.getAttributeNames();     
18         while (e.hasMoreElements()) {        
19             String name = (String)e.nextElement();       
20             String value = session.getAttribute(name).toString();        
21             out.println( name + " = " + value+"<br>");            
22             System.out.println( name + " = " + value);      
23         }   
24     %>    
25     <form action="test.jsp" method="POST">      
26         名稱:<input type=text size=20 name="dataName"><br/>      
27         值:<input type=text size=20 name="dataValue"><br/>      
28         <input type=submit/>    
29     </form>  
30 </body>  
31 </html> 

         f. 在test目錄下繼續新建WEB-INF目錄和web.xml,在<web-app>節點下加入<distributable />,這一步非常重要,是為了通知tomcat服務器,當前應用需要在集群中的所有節點間實現Session共享。如果tomcat中的所有應用都需要Session共享,也可以把conf/context.xml中的<Context>改為<Context distributable="true">,這樣就不需對所有應用的web.xml再進行單獨配置(修改需要Session復制的應用中WEB-INF/web.xml文件,在文件中的<web-app>標簽中增加:<distributable/>在應用的web.xml中增加上述配置后,就表示該應用需要進行Session復制)。 

      啟動t1,待t1啟動完成后再啟動t2。再次訪問http://localhost,可以看到小貓頁面。訪問http://localhost/test/test.jsp。可以看到包括服務器地址,端口,sessionid等信息在內的頁面。

      注意這里的sessionid,與平常的sessionid相比多了小數點和后面的部分,這里的jvm1即處理當前請求tomcat服務器的jvmRoute,通過這里可以知道是集群中的哪一個服務器處理了當前請求。在文本框中輸入名稱和值,點擊按鈕,信息就保存到了Session中,並且顯示到頁面上。不斷點擊按鈕,可以發現輸入的信息並未丟失,而且sessionid小數點之前的部分保持不變,而小數點后面的字符不停的變化,表明是由不同的tomcat服務器處理了這些請求。這樣就實現了負載均衡,並且集群中的不同節點間可以實現會話的共享。此時如果停止一個tomcat服務器t2,Apache將會自動把后續請求轉發到集群中的其他服務器即t1。重啟t2后,Apache會自動偵測到t2的狀態為可用,然后會繼續在t1和t2間進行負載均衡。

      如果需要向集群中增加節點,首先需要對tomcat作類似配置,然后修改Apache httpd.conf,增加BalancerMember,指向新增的tomcat即可。


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