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<dl class="box_t"><dd>SpringMVC,Mybatis,FreeMarker连接mycat示例(一)</dd></dl>
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<h1 id="项目结构如图">项目结构如图:</h1>
![这里写图片描述](/image/L3VwbG9hZGZpbGUvQ29sbGZpbGVzLzIwMTYwOTEyLzIwMTYwOTEyMDkyNzM2ODA2LnBuZw==.png "\")
![这里写图片描述](/image/L3VwbG9hZGZpbGUvQ29sbGZpbGVzLzIwMTYwOTEyLzIwMTYwOTEyMDkyNzM2ODA4LnBuZw==.png "\")
首先是各种配置文件，属性文件
mycat.properties内容:
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#数据库连接配置
#以下是mycat中间件连接
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:
//localhost:8066/SSMDB?useUnicode=true&characterEncoding=UTF-8
jdbc.username=wu
jdbc.password=hello123
#以下是mysql连接
#jdbc.url=jdbc:mysql:
//localhost:3306/MyCAT_DB?useUnicode=true&characterEncoding=UTF-8
#jdbc.username=root
#jdbc.password=
123456
#定义初始连接数
jdbc.initialPoolSize=
10
jdbc.maxPoolSize=
200
jdbc.minPoolSize=
5
jdbc.maxIdleTime=
20
jdbc.acquireIncrement=
10
jdbc.maxStatements=
50
jdbc.idleConnectionTestPeriod=
60
jdbc.initialSize=
5
#定义最大空闲
jdbc.maxIdle=
20
#定义最小空闲
jdbc.minIdle=
5
#定义最大连接数
jdbc.maxActive=
200
jdbc.removeAbandonedTimeout=
300
#定义最长等待时间
jdbc.maxWait=
60000
jdbc.maxOpenPreparedStatements=
10
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log4j.xml内容:
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<!--?xml version=
'1.0'
encoding=
'UTF-8'
?-->
<layout
class
=
"org.apache.log4j.PatternLayout"
><param name=
"ConversionPattern"
value=
"%d [%7r] %6p - %30.30c - %m \n"
>
</layout>
</appender>
<param name=
"Append"
value=
"false"
><param name=
"file"
value=
"mycatDemo-debug.log"
>
<layout
class
=
"org.apache.log4j.PatternLayout"
><param name=
"ConversionPattern"
value=
"%d [%7r] %6p - %30.30c - %m \n"
>
</layout>
</appender>
<param name=
"DatePattern"
value=
"'.'yyyy-MM-dd"
><param name=
"Append"
value=
"true"
><param name=
"file"
value=
"mycatDemo.log"
>
<layout
class
=
"org.apache.log4j.PatternLayout"
><param name=
"ConversionPattern"
value=
"%d [%7r] %6p - %30.30c - %m \n"
>
</layout>
<filter
class
=
"org.apache.log4j.varia.LevelRangeFilter"
><param name=
"LevelMin"
value=
"DEBUG"
>
</filter>
</appender>
<!--
<param name=
"DatePattern"
value=
"'.'yyyy-MM-dd"
/>
<param name=
"file"
value=
"${las-im-scheduler.log.path}/las-report-zookeeper.log"
/>
<layout
class
=
"org.apache.log4j.PatternLayout"
>
<param name=
"ConversionPattern"
value=
"%d [%7r] %6p - %30.30c - %m \n"
/>
</layout>
</appender>
<category name=
"org.apache.zookeeper"
additivity=
"false"
>
<priority value=
"debug"
/>
</category>
-->
<category additivity=
"true"
name=
"org.cometd"
>
<priority value=
"ERROR"
>
</appender-ref></priority></category>
<category additivity=
"true"
name=
"org.springframework.orm.ibatis3"
>
<priority value=
"INFO"
>
</appender-ref></priority></category>
<category additivity=
"true"
name=
"org.apache.ibatis"
>
<priority value=
"ERROR"
>
</appender-ref></priority></category>
<category additivity=
"true"
name=
"java.sql"
>
<priority value=
"ERROR"
>
</appender-ref></priority></category>
<category additivity=
"true"
name=
"com.mycat"
>
<priority value=
"debug"
>
</appender-ref></priority></category>
<root>
<priority value=
"ERROR"
>
</appender-ref></appender-ref></priority></root>
</log4j:configuration>
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sqlmap文件下的TestMapper.xml实体映射文件
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<!--?xml version=
"1.0"
encoding=
"UTF-8"
?-->
<mapper namespace=
"com.mycat.test.model.Test"
>
<resultmap id=
"testResultMap"
type=
"com.mycat.test.model.Test"
>
<result column=
"id_"
property=
"id"
>
<result column=
"name_"
property=
"name"
>
<result column=
"user_id"
property=
"userId"
>
</result></result></result></resultmap>
<select id=
"selectAll"
resultmap=
"testResultMap"
>
select * from sam_test
</select>
<select id=
"selectSome"
parametertype=
"java.util.Map"
resultmap=
"testResultMap"
>
select * from sam_test limit #{offset},#{limit}
</select>
<select id=
"getObject"
parametertype=
"java.lang.Object"
resultmap=
"testResultMap"
>
select * from sam_test where id_ = #{id}
</select>
<insert id=
"insert"
keyproperty=
"id_"
parametertype=
"com.mycat.test.model.Test"
>
INSERT INTO sam_test(
name_,
user_id
)
VALUES(
#{name,jdbcType=VARCHAR},
#{userId,jdbcType=BIGINT}
)
<selectkey keyproperty=
"id"
order=
"AFTER"
resulttype=
"java.lang.Integer"
>
select last_insert_id() as id
</selectkey>
</insert>
<update id=
"update"
parametertype=
"com.mycat.test.model.Test"
>
update sam_test
<set>
<
if
test=
"name != null and name != ''"
>
name_ = #{name},
</
if
>
<
if
test=
"userId != null"
>
user_id = #{userId},
</
if
>
</set>
where id_=#{id}
</update>
<!-- #{}中的参数名与方法中的参数的复杂数据类型的属性名一致 -->
<delete id=
"delete"
parametertype=
"java.lang.Integer"
>
delete from sam_test where id_ = #{id}
</delete>
<select id=
"findOneByMap"
resultmap=
"testResultMap"
>
select * from sam_test where
1
=
1
AND
${param.name} = #{param.value}
limit
0
,
1
</select>
<select id=
"findOneByObject"
parametertype=
"com.mycat.test.model.Test"
resultmap=
"testResultMap"
>
select * from sam_test
and name_=#{name}
and user_id=#{userId}
limit
0
,
1
</select>
<select id=
"findByMap"
resultmap=
"testResultMap"
>
select * from sam_test where
1
=
1
AND
${param.name} = #{param.value}
</select>
<select id=
"findByObject"
parametertype=
"com.mycat.test.model.Test"
resultmap=
"testResultMap"
>
select * from sam_test
and name_=#{name}
and user_id=#{userId}
</select>
<select id=
"findByIn"
resultmap=
"testResultMap"
>
select * from sam_test where
1
=
1
AND
${param.name} IN (#{param.value})
</select>
<select id=
"findByLike"
resultmap=
"testResultMap"
>
select * from sam_test where
1
=
1
AND
${param.name} LIKE #{param.value}
</select>
<select id=
"getTotalCount"
resulttype=
"int"
>
select count(
1
) from sam_test
</select>
<select id=
"getCount"
parametertype=
"java.util.Map"
resulttype=
"int"
>
select count(
1
) from sam_test where
1
=
1
${whereClause}
</select>
<select id=
"query"
parametertype=
"java.util.Map"
resultmap=
"testResultMap"
>
select ${fieldsClause} from sam_test where
1
=
1
${whereClause}
${orderClause}
limit ${limit} offset ${offset}
</select>
</mapper>
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spring-config-db.xml配置：
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<!--?xml version=
"1.0"
encoding=
"UTF-8"
?-->
<beans xmlns=
"https://www.springframework.org/schema/beans"
xmlns:aop=
"https://www.springframework.org/schema/aop"
xmlns:tx=
"https://www.springframework.org/schema/tx"
xmlns:xsi=
"https://www.w3.org/2001/XMLSchema-instance"
xsi:schemalocation="https://www.springframework.org/schema/beans
https:
//www.springframework.org/schema/beans/spring-beans-3.1.xsd
https:
//www.springframework.org/schema/tx
https:
//www.springframework.org/schema/tx/spring-tx.xsd
https:
//www.springframework.org/schema/aop
https:
//www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 配置Mybatis会话工厂 -->
<bean
class
=
"org.mybatis.spring.SqlSessionFactoryBean"
id=
"sqlSessionFactory"
>
<!-- 注入DataSource -->
<!-- 数据源 -->
<property name=
"dataSource"
ref=
"druidDataSource"
>
<!-- 需要加载的mapper.xml，该bean被创建后，会自动加载这些文件。 -->
<property name=
"mapperLocations"
>
<list>
<!-- 自动匹配Mapper映射文件 -->
<value>classpath*:sqlmap/*Mapper.xml</value>
</list>
</property>
</property></bean>
<bean
class
=
"org.mybatis.spring.SqlSessionTemplate"
id=
"sqlSession"
>
<constructor-arg ref=
"sqlSessionFactory"
>
</constructor-arg></bean>
<!-- Druid集连接池，首先spring配置DataSource -->
<bean
class
=
"com.alibaba.druid.pool.DruidDataSource"
destroy-method=
"close"
id=
"druidDataSource"
init-method=
"init"
>
<property name=
"driverClassName"
value=
"${jdbc.driverClassName}"
>
<!-- 基本属性 url、user、password -->
<property name=
"url"
value=
"${jdbc.url}"
>
<property name=
"username"
value=
"${jdbc.username}"
>
<property name=
"password"
value=
"${jdbc.password}"
>
<!--initialSize: 初始化连接-->
<property name=
"initialSize"
value=
"${jdbc.initialSize}"
>
<!--minIdle: 最小空闲连接-->
<property name=
"minIdle"
value=
"${jdbc.minIdle}"
>
<!--maxActive: 最大连接数量-->
<property name=
"maxActive"
value=
"${jdbc.maxActive}"
>
<!--removeAbandoned: 对泄漏的连接，是否自动回收超时连接-->
<property name=
"removeAbandoned"
value=
"true"
>
<!--removeAbandonedTimeout: 超时时间(以秒数为单位)-->
<property name=
"removeAbandonedTimeout"
value=
"${jdbc.removeAbandonedTimeout}"
>
<!--maxWait: 超时等待时间以毫秒为单位
6000
毫秒/
1000
等于
60
秒-->
<property name=
"maxWait"
value=
"${jdbc.maxWait}"
>
<property name=
"defaultAutoCommit"
>
<value>
false
</value>
</property>
<property name=
"validationQuery"
value=
"select 1"
>
<!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
<!-- 如果用Oracle，则把poolPreparedStatements配置为
true
，mysql可以配置为
false
。分库分表较多的数据库，建议配置为
false
-->
<property name=
"poolPreparedStatements"
value=
"true"
>
<property name=
"maxOpenPreparedStatements"
value=
"${jdbc.maxOpenPreparedStatements}"
>
<!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 -->
<!--<property name=
"filters"
value=
"stat"
/>-->
<!-- 慢日志查询 缺省为
3
秒 修改为
10
秒
10000
-->
<!-- <property name=
"connectionProperties"
value=
"druid.stat.slowSqlMillis=5000"
/> -->
</property></property></property></property></property></property></property></property></property></property></property></property></property></bean>
<!-- druid 监控 spring -->
<!-- <bean id=
"druid-stat-interceptor"
class
=
"com.alibaba.druid.support.spring.stat.DruidStatInterceptor"
/> -->
<!-- 按类型拦截配置 -->
<!-- <bean id=
"druid-type-proxyCreator"
class
=
"com.alibaba.druid.support.spring.stat.BeanTypeAutoProxyCreator"
> -->
<!-- 所有ABCInterface的派生类被拦截监控 -->
<!-- <property name=
"targetBeanType"
value=
"xxxx.ABCInterface"
/>
<property name=
"interceptorNames"
>
<list>
<value>druid-stat-interceptor</value>
</list>
</property>
</bean> -->
<!-- 按照BeanId来拦截配置 -->
<!-- <bean
class
=
"org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"
>
<property name=
"proxyTargetClass"
value=
"true"
/>
<property name=
"beanNames"
>
<list> -->
<!-- 这里配置需要拦截的bean id列表 -->
<!-- <value>xxx-dao</value>
<value>xxx-service</value>
</list>
</property>
<property name=
"interceptorNames"
>
<list>
<value>druid-stat-interceptor</value>
</list>
</property>
</bean> -->
<!-- 方法名正则匹配拦截配置 -->
<!-- <bean id=
"druid-stat-pointcut"
class
=
"org.springframework.aop.support.JdkRegexpMethodPointcut"
scope=
"prototype"
> -->
<!-- <property name=
"patterns"
> -->
<!-- <list> -->
<!-- <value>com.xinnet.*.service.*</value> -->
<!-- <value>com.mycompany.service.*</value> -->
<!-- <value>com.mycompany.dao.*</value> -->
<!-- </list> -->
<!-- </property> -->
<!-- </bean> -->
<!-- -->
<!-- -->
<!-- </aop:config> -->
<!-- 配置事物管理器 -->
<!-- 事务管理器 对mybatis操作数据库事务控制，spring使用jdbc的事务控制类 -->
<bean
class
=
"org.springframework.jdbc.datasource.DataSourceTransactionManager"
id=
"transactionManager"
>
<!-- 数据源 dataSource在上面配置了 -->
<property name=
"dataSource"
ref=
"druidDataSource"
>
</property></bean>
<!-- 配置声明式事务 -->
<tx:annotation-driven transaction-manager=
"transactionManager"
>
</tx:annotation-driven></beans>
|
vcxml配置">spring-config-mvc.xml配置：
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<!--?xml version=
"1.0"
encoding=
"UTF-8"
?-->
<!--suppress ALL -->
<beans xmlns=
"https://www.springframework.org/schema/beans"
xmlns:context=
"https://www.springframework.org/schema/context"
xmlns:mvc=
"https://www.springframework.org/schema/mvc"
xmlns:util=
"https://www.springframework.org/schema/util"
xmlns:xsi=
"https://www.w3.org/2001/XMLSchema-instance"
xsi:schemalocation="
https:
//www.springframework.org/schema/beans
https:
//www.springframework.org/schema/beans/spring-beans-3.1.xsd
https:
//www.springframework.org/schema/context
https:
//www.springframework.org/schema/context/spring-context-3.1.xsd
https:
//www.springframework.org/schema/mvc
https:
//www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
https:
//www.springframework.org/schema/util
https:
//www.springframework.org/schema/util/spring-util-3.1.xsd">
<!-- spring 自动扫描组件 -->
<!-- 自动扫描 controller 包下的所有类 -->
<!-- mvc controller -->
<context:component-scan base-
package
=
"com.mycat"
>
<context:include-filter expression=
".*.controller.*"
type=
"regex"
>
<context:include-filter expression=
".*.service.*"
type=
"regex"
>
<context:include-filter expression=
".*.dao.*"
type=
"regex"
>
</context:include-filter></context:include-filter></context:include-filter></context:component-scan>
<!-- 开启注解的功能 -->
<!-- 启动支持 mvc 的注解，比如
@Controller
,
@RequestMapping
等-->
<mvc:annotation-driven>
<!--<bean id=
"conversionService"
-->
<!--
class
=
"org.springframework.format.support.FormattingConversionServiceFactoryBean"
>-->
<!--<property name=
"formatterRegistrars"
>-->
<!--<bean
class
=
"com.jd.common.springmvc.converter.DefaultFormatterRegistrar"
/>-->
<!--</property>-->
<!--</bean>-->
<!-- 解决静态资源被拦截的问题 -->
<mvc:
default
-servlet-handler>
<!--
static
resources -->
<!--<mvc:resources location=
"/static/"
mapping=
"/static/**"
cache-period=
"864000"
/>-->
<!--<mvc:resources location=
"/js/"
mapping=
"/js/**"
cache-period=
"864000"
/>-->
<!-- 配置视图解析器，使得在JSP中能够使用完整的JSTL功能 -->
<!-- 设置视图解析工具 -->
<!-- template view -->
<bean
class
=
"org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"
id=
"freemarkerConfig"
>
<property name=
"templateLoaderPath"
value=
"/WEB-INF/views/"
>
<property name=
"freemarkerSettings"
>
<props>
<prop key=
"template_update_delay"
>
0
</prop>
<prop key=
"default_encoding"
>UTF-
8
</prop>
<prop key=
"number_format"
>
0
.##########</prop>
<prop key=
"datetime_format"
>yyyy-MM-dd HH:mm:ss</prop>
<prop key=
"classic_compatible"
>
true
</prop>
<prop key=
"template_exception_handler"
>ignore</prop>
</props>
</property>
</property></bean>
<bean
class
=
"org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver"
id=
"freeMarkerViewResolver"
>
<!--<property name=
"layoutUrl"
value=
"layout/default.ftl"
/>-->
<property name=
"cache"
value=
"false"
>
<property name=
"suffix"
value=
".ftl"
>
<property name=
"requestContextAttribute"
value=
"request"
>
<property name=
"exposeSpringMacroHelpers"
value=
"true"
>
<property name=
"exposeRequestAttributes"
value=
"true"
>
<property name=
"exposeSessionAttributes"
value=
"true"
>
<property name=
"contentType"
value=
"text/html;charset=UTF-8"
>
</property></property></property></property></property></property></property></bean>
<bean
class
=
"org.springframework.web.servlet.view.ContentNegotiatingViewResolver"
>
<property name=
"defaultContentType"
value=
"text/html"
>
<!-- not by accept header -->
<property name=
"ignoreAcceptHeader"
value=
"true"
>
<!-- by extension -->
<property name=
"mediaTypes"
><map>
<entry key=
"html"
value=
"text/html"
>
<entry key=
"xml"
value=
"application/xml"
>
<entry key=
"json"
value=
"application/json"
>
</entry></entry></entry></map>
</property>
<property name=
"viewResolvers"
>
<list>
<ref bean=
"freeMarkerViewResolver"
>
</ref></list>
</property>
<property name=
"defaultViews"
>
<list>
<!--
for
application/json -->
<bean
class
=
"org.springframework.web.servlet.view.json.MappingJacksonJsonView"
>
</bean></list>
</property>
</property></property></bean>
<!-- locale related -->
<!--<bean id=
"localeResolver"
class
=
"org.springframework.web.servlet.i18n.CookieLocaleResolver"
>-->
<!--<property name=
"cookieName"
value=
"_clientlocale"
/>-->
<!--<property name=
"defaultLocale"
value=
"zh_CN"
/>-->
<!--<property name=
"cookieMaxAge"
value=
"2147483647"
/>-->
<!--</bean>-->
<bean
class
=
"org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"
>
<bean
class
=
"org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"
>
<property name=
"messageConverters"
>
<util:list id=
"beanList"
>
<ref bean=
"mappingJacksonHttpMessageConverter"
>
</ref></util:list>
</property>
</bean>
<bean
class
=
"org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"
id=
"mappingJacksonHttpMessageConverter"
>
<property name=
"supportedMediaTypes"
>
<list>
<value>text/html;charset=UTF-
8
</value>
</list>
</property>
</bean>
</bean></mvc:
default
-servlet-handler></mvc:annotation-driven></beans>
|
spring-config.xml配置:
|
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<!--?xml version=
"1.0"
encoding=
"UTF-8"
?-->
<beans xmlns=
"https://www.springframework.org/schema/beans"
xmlns:context=
"https://www.springframework.org/schema/context"
xmlns:xsi=
"https://www.w3.org/2001/XMLSchema-instance"
xsi:schemalocation="https://www.springframework.org/schema/beans
https:
//www.springframework.org/schema/beans/spring-beans-3.1.xsd
https:
//www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<!-- spring容器中最多只能定义一个context:property-placeholder spring中 context:property-placeholder
导入多个独立的 .properties配置文件 Spring容器仅允许最多定义一个PropertyPlaceholderConfigurer(或<context:property-placeholder/>)，其余的会被Spring忽略掉
通配符解决 -->
<!-- 引入项目配置文件 -->
<!-- 加载db.properties文件中的内容,db.properties文件中的key要有一定的特殊规则 -->
<context:property-placeholder location=
"classpath*:mycat.properties"
>
<
import
resource=
"spring-config-mvc.xml"
>
<!--文件中主要负责配置：加载db.properties、配置数据源、配置SqlSessionFactoryBean、Mapper扫描器-->
<
import
resource=
"spring-config-db.xml"
>
</
import
></
import
></context:property-placeholder></beans>
|