1. Spring整合MyBatis切换SqlSessionFactory有两种方法,第一、 继承SqlSessionDaoSupport,重写获取SqlSessionFactory的方法。第二、继承SqlSessionTemplate 重写getSqlSessionFactory、getConfiguration和SqlSessionInterceptor这个拦截器。其中最为关键还是继承SqlSessionTemplate 并重写里面的方法。
我们一般使用第二种方法,第二种方法有2 种配置:
单个sqlSessionFactory情况:需要在程序中(action 里面动态指定使用那个数据库连接池)
spring-mybatis.xml配置如下:
- <!-- ========================================配置数据源========================================= -->
- <!-- 配置数据源,使用的是alibaba的Druid(德鲁伊)数据源 -->
- <bean name="pepos" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
- <property name="url" value="${pepos.url}" />
- <property name="username" value="${pepos.username}" />
- <property name="password" value="${pepos.password}" />
- <!-- 密码解密-->
- <property name="filters" value="config" />
- <property name="connectionProperties" value="config.decrypt=true;config.decrypt.key=${pepos.publickey}" />
- <!-- 初始化连接大小 -->
- <property name="initialSize" value="0" />
- <!-- 连接池最大使用连接数量 -->
- <property name="maxActive" value="20" />
- <!-- 连接池最大空闲 <property name="maxIdle" value="20" /> -->
- <!-- 连接池最小空闲 -->
- <property name="minIdle" value="0" />
- <!-- 获取连接最大等待时间 -->
- <property name="maxWait" value="60000" />
- <!-- 打开PSCache,并且指定每个连接上PSCache的大小 -->
- <property name="poolPreparedStatements" value="true" />
- <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
- <property name="validationQuery" value="SELECT 1" />
- <property name="testOnBorrow" value="false" />
- <property name="testOnReturn" value="false" />
- <property name="testWhileIdle" value="true" />
- <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
- <property name="timeBetweenEvictionRunsMillis" value="60000" />
- <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
- <property name="minEvictableIdleTimeMillis" value="25200000" />
- <!-- 打开removeAbandoned功能 -->
- <property name="removeAbandoned" value="true" />
- <!-- 1800秒,也就是30分钟 -->
- <property name="removeAbandonedTimeout" value="1800" />
- <!-- 关闭abanded连接时输出错误日志 -->
- <property name="logAbandoned" value="true" />
- </bean>
- <!-- 配置数据源,使用的是alibaba的Druid(德鲁伊)数据源 -->
- <bean name="payment" class="com.alibaba.druid.pool.DruidDataSource"
- init-method="init" destroy-method="close">
- <property name="url" value="${payment.url}" />
- <property name="username" value="${payment.username}" />
- <property name="password" value="${payment.password}" />
- <!-- 密码解密 -->
- <property name="filters" value="config" />
- <property name="connectionProperties" value="config.decrypt=true;config.decrypt.key=${payment.publickey}" />
- <!-- 初始化连接大小 -->
- <property name="initialSize" value="0" />
- <!-- 连接池最大使用连接数量 -->
- <property name="maxActive" value="20" />
- <!-- 连接池最大空闲 <property name="maxIdle" value="20" /> -->
- <!-- 连接池最小空闲 -->
- <property name="minIdle" value="0" />
- <!-- 获取连接最大等待时间 -->
- <property name="maxWait" value="60000" />
- <!-- 打开PSCache,并且指定每个连接上PSCache的大小 -->
- <property name="poolPreparedStatements" value="true" />
- <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
- <property name="validationQuery" value="SELECT 1" />
- <property name="testOnBorrow" value="false" />
- <property name="testOnReturn" value="false" />
- <property name="testWhileIdle" value="true" />
- <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
- <property name="timeBetweenEvictionRunsMillis" value="60000" />
- <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
- <property name="minEvictableIdleTimeMillis" value="25200000" />
- <!-- 打开removeAbandoned功能 -->
- <property name="removeAbandoned" value="true" />
- <!-- 1800秒,也就是30分钟 -->
- <property name="removeAbandonedTimeout" value="1800" />
- <!-- 关闭abanded连接时输出错误日志 -->
- <property name="logAbandoned" value="true" />
- </bean>
- <!-- 需要基础spring的 AbstractRoutingDataSource 来实现动态设置数据库连接池 -->
- <bean id="dynamicDataSource" class="com.threeweidu.mallmanage.utils.DynamicDataSource">
- <property name="targetDataSources">
- <map key-type="java.lang.String">
- <entry value-ref="pepos" key="pepos"></entry>
- <entry value-ref="payment" key="payment"></entry>
多个sqlsessionFactroy 模式
spring-mybatis.xml 配置文件
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
- xmlns:aop="http://www.springframework.org/schema/aop"
- xsi:schemaLocation="
- http://www.springframework.org/schema/beans
- http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
- http://www.springframework.org/schema/tx
- http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
- http://www.springframework.org/schema/aop
- http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
- ">
- <import resource="spring-mybatis-shop.xml" />
- <import resource="spring-mybatis-payment.xml" />
- <!--
- <import resource="spring-mybatis-pepos.xml" />
- <import resource="spring-mybatis-peposlog.xml" />
- <import resource="spring-mybatis-peposchat.xml" />
- <import resource="spring-mybatis-vaservice.xml" />
- -->
- </beans>
spring-mybatis-payment.xml 配置
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
- xmlns:aop="http://www.springframework.org/schema/aop"
- xsi:schemaLocation="
- http://www.springframework.org/schema/beans
- http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
- http://www.springframework.org/schema/tx
- http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
- http://www.springframework.org/schema/aop
- http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
- ">
- <!-- 数据库连接池 -->
- <bean id="dataSource_payment" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
- <property name="url" value="${payment.url}" />
- <property name="username" value="${payment.username}" />
- <property name="password" value="${payment.password}" />
- <!-- 密码解密 -->
- <property name="filters" value="config" />
- <property name="connectionProperties" value="config.decrypt=true;config.decrypt.key=${payment.publickey}" />
- <!-- 初始化连接大小 -->
- <property name="initialSize" value="3" />
- <!-- 连接池最大使用连接数量 -->
- <property name="maxActive" value="200" />
- <!-- 连接池最大空闲 <property name="maxIdle" value="20" /> -->
- <!-- 连接池最小空闲 -->
- <property name="minIdle" value="0" />
- <!-- 获取连接最大等待时间 -->
- <property name="maxWait" value="60000" />
- <!-- 打开PSCache,并且指定每个连接上PSCache的大小 -->
- <property name="poolPreparedStatements" value="true" />
- <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
- <property name="validationQuery" value="SELECT 1" />
- <property name="testOnBorrow" value="false" />
- <property name="testOnReturn" value="false" />
- <property name="testWhileIdle" value="true" />
- <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
- <property name="timeBetweenEvictionRunsMillis" value="60000" />
- <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
- <property name="minEvictableIdleTimeMillis" value="25200000" />
- <!-- 打开removeAbandoned功能 -->
- <property name="removeAbandoned" value="true" />
- <!-- 1800秒,也就是30分钟 -->
- <property name="removeAbandonedTimeout" value="1800" />
- <!-- 关闭abanded连接时输出错误日志 -->
- <property name="logAbandoned" value="true" />
- </bean>
- <!-- MyBatis配置 -->
- <bean id="sqlSessionFactory_payment" class="org.mybatis.spring.SqlSessionFactoryBean">
- <property name="dataSource" ref="dataSource_payment" />
- <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
- <property name="typeAliasesPackage" value="com.threeweidu.supplier.entity" />
- <!-- 显式指定Mapper文件位置 -->
- <property name="mapperLocations" value="classpath:/com/threeweidu/supplier/dao/mybatis/payment/mapper/*Mapper.xml" />
- </bean>
- <!-- 配置扫描器 -->
- <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
- <!-- 扫描me.gacl.dao这个包以及它的子包下的所有映射接口类 -->
- <property name="basePackage" value="com.threeweidu.supplier.dao.mybatis.payment" />
- <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory_payment" />
- </bean>
- <!-- 配置Spring的事务管理器 -->
- <bean id="transactionManager_payment" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
- <property name="dataSource" ref="dataSource_payment" />
- </bean>
- <tx:annotation-driven transaction-manager="transactionManager_payment" proxy-target-class="true" />
- <!-- 拦截器方式配置事务 -->
- <tx:advice id="transactionAdvice_payment" transaction-manager="transactionManager_payment">
- <tx:attributes>
- <tx:method name="get*" propagation="REQUIRED" read-only="true"/>
- <tx:method name="find*" propagation="REQUIRED" read-only="true"/>
- <tx:method name="load*" propagation="REQUIRED" read-only="true"/>
- <tx:method name="init*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="save*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="add*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="register*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="update*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="delete*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="remove*" rollback-for="java.lang.Exception" propagation="REQUIRED" read-only="false"/>
- <tx:method name="*" propagation="SUPPORTS" />
- </tx:attributes>
- </tx:advice>
- <aop:config>
- <aop:advisor advice-ref="transactionAdvice_payment" pointcut="execution(* com.threeweidu.supplier.service..*Impl.*(..))" />
- </aop:config>
- </beans>
参考:http://blog.csdn.net/xingxiupaioxue/article/details/51094091