三個配置應用的位置：
1、conf目錄下的server.xml文件：此方式為Eclipse默認配置方法，同時也是三種方式中優先級最高的。
<?xml version="1.0" encoding="UTF-8"?> <!-- 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. --><!-- Note: A "Server" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/server.html --><Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.startup.VersionLoggerListener"/> <!-- Security listener. Documentation at /docs/config/listeners.html <Listener className="org.apache.catalina.security.SecurityListener" /> --> <!--APR library loader. Documentation at /docs/apr.html --> <Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/> <!-- Prevent memory leaks due to use of particular java/javax APIs--> <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/> <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/> <!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html --> <GlobalNamingResources> <!-- Editable user database that can also be used by UserDatabaseRealm to authenticate users --> <Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/> </GlobalNamingResources> <!-- A "Service" is a collection of one or more "Connectors" that share a single "Container" Note: A "Service" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/service.html --> <Service name="Catalina"> <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 --> <Connector connectionTimeout="20000" port="8081" protocol="HTTP/1.1" redirectPort="8443"/> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the NIO implementation that requires the JSSE style configuration. When using the APR/native implementation, the OpenSSL style configuration is required as described in the APR/native documentation --> <!-- <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol" maxThreads="150" SSLEnabled="true" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine defaultHost="localhost" name="Catalina"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true"> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html Note: The pattern used is equivalent to using pattern="common" --> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="%h %l %u %t "%r" %s %b" prefix="localhost_access_log" suffix=".txt"/> <Context docBase="spring-websocket-portfolio" path="/spring-websocket-portfolio" reloadable="true" source="org.eclipse.jst.jee.server:spring-websocket-portfolio"/></Host> </Engine> </Service> </Server>
多個應用時只需在最后的<Context>標簽多寫幾個即可。docBase為發布目錄，Eclipse默認為.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps下，前提為該應用時Eclipse通過tomcat啟動的。因為Eclipse里配置了tomcat的啟動參數
-Dcatalina.base="G:\Web\JSP\Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0" -Dcatalina.home="C:\Program Files\Apache Software Foundation\Tomcat 8.0" -Dwtp.deploy="G:\Web\JSP\Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps" -Djava.endorsed.dirs="C:\Program Files\Apache Software Foundation\Tomcat 8.0\endorsed"
2、conf\Catalina\localhost目錄下配置一個--目錄名.xml文件，文件內容為
<Context docBase="test" path="/test" reloadable="true" />
這個path要和文件名一致，docBase為應用目錄，默認在webapps目錄下。
啟動順序比1低。
3、直接部署在默認的webapps目錄下，tomcat會自動部署該項目。優先級最低。
掃描啟動時在org.apache.catalina.startup.HostConfig類中的start()方法中，調用的
deployApps() 方法
protected void deployApps() { File appBase = host.getAppBaseFile(); File configBase = host.getConfigBaseFile(); String[] filteredAppPaths = filterAppPaths(appBase.list()); // Deploy XML descriptors from configBase deployDescriptors(configBase, configBase.list()); // Deploy WARs deployWARs(appBase, filteredAppPaths); // Deploy expanded folders deployDirectories(appBase, filteredAppPaths); }
其中，appBase為配置的默認部署目錄，默認情況下為webapps目錄
configBase為conf/Catalina/localhost目錄，deployDescriptors方法：
/** * Deploy XML context descriptors. */ protected void deployDescriptors(File configBase, String[] files) { if (files == null) return; ExecutorService es = host.getStartStopExecutor(); List<Future<?>> results = new ArrayList<>(); for (int i = 0; i < files.length; i++) { File contextXml = new File(configBase, files[i]); if (files[i].toLowerCase(Locale.ENGLISH).endsWith(".xml")) { ContextName cn = new ContextName(files[i], true); if (isServiced(cn.getName()) || deploymentExists(cn.getName())) continue; results.add( es.submit(new DeployDescriptor(this, cn, contextXml))); } } for (Future<?> result : results) { try { result.get(); } catch (Exception e) { log.error(sm.getString( "hostConfig.deployDescriptor.threaded.error"), e); } } }
取該文件夾下的所有xml文件，並取部署目錄下同名文件夾，進行部署。最后才是部署默認目錄的war包。
上圖為Eclipse下tomcat的配置，General Information為通用信息，Runtime Environment可配置Java的環境等，OpenLaunchConfiguration為配置啟動參數等，Configuration即tomcat的conf目錄。
server locations為服務器文件放在何處，即配置文件，部署目錄等放在哪里，只有移除全部module這里才可以做修改。
server options為服務器選項。第一個是不發布，即不放到target目錄（？）。第二個為為每個應用發布到單獨的xml文件，即localhost目錄下。
第三個是默認重載模塊，即做修改便重載。后略。
發布的一些選項，是否修改文件等等。超時選項，端口設置等等。
ps：配置session超時時間為：
1、修改server.xml下的應用配置：
<Context path="/test" docBase="/test"
defaultSessionTimeOut="3600" isWARExpanded="true"
isWARValidated="false" isInvokerEnabled="true"
isWorkDirPersistent="false"/>
2、web.xml下
<session-config>
<session-timeout>20</session-timeout>
</session-config>
3、
在程序中定義：
session.setMaxInactiveInterval（30*60）；
設置單位為秒，設置為-1永不過期
不知道這種設置會不會真正地起到作用的哦！
session.setTimeout(你設置的時間); ------>>> 這個也可以，但是和setMaxInactiveInterval有什么差別暫時沒有體會。