spirng整合mybatis的事务注意事项:
下面是配置文件:
<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
<!-- 自动扫描 (去除对controller的管理) -->
<context:component-scan base-package="com.ming.shiro" use-default-filters="true">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- Spring中引入其他配置文件 -->
<!-- <import resource="classpath*:/spring/job-timer.xml" /> -->
<!-- 引入c3p0配置文件 -->
<!-- <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> -->
<!--c3p0连接池 -->
<!-- <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${driver}" /> <property name="jdbcUrl" value="${url}" /> <property name="user" value="${username}" /> <property name="password" value="${password}" /> <property name="maxPoolSize" value="${maxPoolSize}" /> <property name="minPoolSize" value="${minPoolSize}" /> <property name="initialPoolSize" value="${initialPoolSize}" /> <property name="maxIdleTime" value="${maxIdleTime}" /> <property name="acquireIncrement" value="${acquireIncrement}" /> <property name="idleConnectionTestPeriod" value="${idleConnectionTestPeriod}" /> 关闭连接时,是否提交未提交的事务,默认为false,即关闭连接,回滚未提交的事务 <property name="autoCommitOnClose" value="false" /> </bean> -->
<!-- 引入DruidDataSource配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:dbConfig.properties" /> </bean>
<!-- 阿里 druid 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
<!-- 数据库基本信息配置 -->
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<property name="driverClassName" value="${driverClassName}" />
<property name="filters" value="${filters}" />
<!-- 最大并发连接数 -->
<property name="maxActive" value="${maxActive}" />
<!-- 初始化连接数量 -->
<property name="initialSize" value="${initialSize}" />
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="${maxWait}" />
<!-- 最小空闲连接数 -->
<property name="minIdle" value="${minIdle}" />
<!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
<!-- 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="${minEvictableIdleTimeMillis}" />
<property name="validationQuery" value="${validationQuery}" />
<property name="testWhileIdle" value="${testWhileIdle}" />
<property name="testOnBorrow" value="${testOnBorrow}" />
<property name="testOnReturn" value="${testOnReturn}" />
<property name="maxOpenPreparedStatements" value="${maxOpenPreparedStatements}" />
<!-- 打开 removeAbandoned 功能 -->
<property name="removeAbandoned" value="${removeAbandoned}" />
<!-- 1800 秒,也就是 30 分钟 -->
<property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
<!-- 关闭 abanded 连接时输出错误日志 -->
<property name="logAbandoned" value="${logAbandoned}" />
<!--设定不默认提交(datasource交給org.mybatis.spring.SqlSessionFactoryBean,这个参数没有任何作用) -->
<property name="defaultAutoCommit" value="${defaultAutoCommit}" />
</bean>
<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
<!-- 接口和配置文件不在同一目录下时需要配置两个参数 mapperLocations(映射文件位置) basePackage(接口位置) -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 classpath:找不到的情况下可以配置为classpath*: -->
<property name="mapperLocations" value="classpath*:com/ming/shiro/mapper/*.xml"></property>
<property name="configLocation" value="classpath:mybatis-config.xml" />
</bean>
<!-- DAO接口所在包名,Spring会自动查找其下的类(spring管理dao接口,注入dao可以按名称注入首字母小写) -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置接口存储的包,用来扫描mapper接口 -->
<property name="basePackage" value="com.ming.shiro.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!--事务配置 -->
<tx:advice id="userTxAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="delete*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" no-rollback-for="java.lang.RuntimeException" />
<tx:method name="insert*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.RuntimeException" />
<tx:method name="create*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.RuntimeException" />
<tx:method name="update*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" />
<tx:method name="select*" propagation="SUPPORTS" />
<tx:method name="get*" propagation="SUPPORTS" />
</tx:attributes>
</tx:advice>
<aop:config proxy-target-class="true">
<aop:pointcut id="pc" expression="execution(* com.ming.shiro.service.impl.*.*(..))" /> <!-- 把事务控制在Service层 -->
<aop:advisor pointcut-ref="pc" advice-ref="userTxAdvice" />
</aop:config>
</beans>
关键点在这里:
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 classpath:找不到的情况下可以配置为classpath*: -->
<property name="mapperLocations" value="classpath*:com/ming/shiro/mapper/*.xml" />
<property name="configLocation" value="classpath:mybatis-config.xml" />
</bean>
将连接池交给org.mybatis.spring.SqlSessionFactoryBean管理,并通过其生成的实体为SqlSessionFactory类,并不是SqlSessionFactoryBean,这样生成的连接池工厂类(我认为是bug),这个工厂类生成的session一旦没有明确的事务管理就会自动提交,并且无论怎么设置连接池datasource的:
没有任何作用,我认为可能在生成SqlSessionFactory的底层将自动提交置为true,所以导致设置无效;