在最近的一个项目中,采用springMVC、mybatis,发现一个很恼人的问题:事务管理不起作用!!网上查阅了大量的资料,尝试了各种解决办法,亦未能解决问题!
spring版本:3.0.5
mybatis版本:3.2.2
1、applicationContext.xml配置:
<context:annotation-config /> <!-- 引入jdbc属性配置文件 --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- 数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="${jdbc.driverClassName}"></property> <property name="url" value="${jdbc.url}"></property> <property name="username" value="${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> </bean> <bean id="ftpConfig" class="com.wtas.utils.CustomizedPropertyConfig"> <property name="location" value="classpath:ftp.properties" /> </bean> <!-- 配置mybatis用到的sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatisConfig.xml" /> <property name="dataSource" ref="dataSource" /> <property name="typeAliasesPackage" value="com.wtas.study.domain,com.wtas.studygroup.domain,com.wtas.sys.domain,com.wtas.test.domain" /> <property name="mapperLocations" value="classpath*:com/wtas/**/*Mapper.xml" /> </bean> <!-- 根据映射文件动态生成dao的实现 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.wtas" /> <property name="annotationClass" value="org.springframework.stereotype.Repository" /> </bean> <!-- 事务控制 --> <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <tx:advice id="userTxAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="remove*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" no-rollback-for="java.lang.RuntimeException" /> <tx:method name="delete*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" no-rollback-for="java.lang.RuntimeException" /> <tx:method name="add*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.RuntimeException" /> <tx:method name="insert*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.RuntimeException" /> <tx:method name="save*" 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="publish*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> <tx:method name="list*" propagation="SUPPORTS" read-only="true" /> <tx:method name="query*" propagation="SUPPORTS" read-only="true" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="page*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <tx:annotation-driven transaction-manager="transactionManager"/> <!-- execution(public * com.wtas.*.service.*.*(..)) OR execution(public * com.wtas.*.*.*.service.*.*(..))--> <aop:config> <aop:pointcut id="pc" expression="execution(public * com.wtas.*.service.*.*(..))" /> <aop:advisor pointcut-ref="pc" advice-ref="userTxAdvice" /> </aop:config>2、springMVC.xml配置:
<!-- 这里注册转换器 --> <mvc:annotation-driven conversion-service="conversionService" /> <context:component-scan base-package="com.wtas"></context:component-scan> <mvc:default-servlet-handler /> <!-- 注册ConversionService --> <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> <!-- 转换器 --> <property name="converters"> <list> <bean class="com.wtas.converter.StringToDateConverter"> <constructor-arg value="yyyy-MM-dd" /> </bean> </list> </property> </bean> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.BufferedImageHttpMessageConverter" /> <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" /> <bean class="org.springframework.http.converter.StringHttpMessageConverter" /> <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" /> </list> </property> </bean> <!-- 视图解释类 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsps/" /> <property name="suffix" value=".jsp" /> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> </bean>
由于之前没用过springMVC,对其原理一知半解,一直在考虑是不是aop配置出错等等无关问题,结果破费周折,未能解决!
今天,偶然间看到一篇文章,颇有启发:
由于采用的是SpringMVC、 MyBatis,故统一采用了标注来声明Service、Controller
由于服务器启动时的加载配置文件的顺序为web.xml---root-context.xml(Spring的配置文件)---servlet-context.xml(SpringMVC的配置文件),由于 root-context.xml配置文件中Controller会先进行扫描装配,但是此时service还没有进行事务增强处理,得到的将是原样的Service(没有经过事务加强处理, 故而没有事务处理能力),所以我们必须在root-context.xml中不扫描Controller,配置如下:
<!-- 自动扫描组件,这里要把controler下面的 controller去除,他们是在spring3-servlet.xml中配置的,如果不去除会影响事务管理的。 -->
<context:component-scan base-package="com.sence">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
在servlet-context.xml中扫描Controller同时不扫描Service,配置如下:
<!-- 扫描所有的controller 但是不扫描service-->
<context:component-scan base-package="com.sence">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" />
</context:component-scan>
按照上述,修改了配置文件,将service的扫描放在applicationContext.xml中,controller的扫描放在springMVC.xml中,
applicationContext.xml中添加:
<context:component-scan base-package="com.wtas"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan>
springMVC.xml中修改:
<!-- 扫描所有的controller 但是不扫描service--> <context:component-scan base-package="com.wtas"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan>重启服务器,调用事务测试方法,结果能够成功启动事务并在出错时回滚,配置完成。
2013-07-24 10:28:59.028 [http-80-1] DEBUG c.w.s.dao.IStudyGroupDao.add [BaseJdbcLogger.java:132] -==> Preparing: INSERT INTO t_study_group VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) 2013-07-24 10:28:59.029 [http-80-1] DEBUG c.w.s.dao.IStudyGroupDao.add [BaseJdbcLogger.java:132] -==> Parameters: null, xxx(String), null, 1(Long), 2013-07-24 10:28:59.024(Timestamp), (String), null, null, null, null, 30(Integer), null 2013-07-24 10:28:59.031 [http-80-1] DEBUG org.mybatis.spring.SqlSessionUtils [SqlSessionUtils.java:165] -Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@d30557] 2013-07-24 10:28:59.083 [http-80-1] DEBUG org.mybatis.spring.SqlSessionUtils [SqlSessionUtils.java:283] -Transaction synchronization rolling back SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@d30557] 2013-07-24 10:28:59.084 [http-80-1] DEBUG org.mybatis.spring.SqlSessionUtils [SqlSessionUtils.java:298] -Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@d30557] 2013-07-24 10:28:59.085 [http-80-1] ERROR c.wtas.studygroup.domain.StudyGroup [StudyGroupAction.java:342] -edit study group error : java.lang.ArithmeticException: / by zero