一个服务方法调用Spring事务的内部多个方法

一个服务方法调用Spring事务的内部多个方法,spring,transactions,aop,Spring,Transactions,Aop,抱歉,代码太复杂了 运行客户端blow调试日志时显示: <?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:aop="http://www.springframework.org/schema/aop"

抱歉,代码太复杂了

运行客户端blow调试日志时显示:

<?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: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-2.5.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
       <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
       <property name="url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf-8"/>
       <property name="username" value="root"/>
       <property name="password" value="root"/>
    </bean>

    <bean id="fooService" class="com.bluesky.FooServiceImpl">
         <property name="dataSource" ref="dataSource"/>  
    </bean>
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource"/>  
    </bean>  

    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="insertA" propagation="REQUIRED" />
             <tx:method name="insertB" propagation="REQUIRES_NEW" />
        </tx:attributes>
    </tx:advice>

    <aop:config proxy-target-class="true">
        <aop:pointcut id="interceptorPointCuts" expression="execution(* com.bluesky.*Service*.*(..))" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />       
    </aop:config>     
</beans>
21:44:19546调试事务同步管理器:183-绑定值[org.springframework.jdbc.datasource]。ConnectionHolder@ba86ef]对于键[org.springframework.jdbc.datasource]。DriverManagerDataSource@1b9658e]线程[主] 21:44:19546调试事务同步管理器:258-初始化事务同步 21:44:19547调试事务接收器:362-获取[com.bluesky.FooServiceImpl.insertA]的事务 21:44:19547调试JdbcTemplate:416-执行SQL语句[插入学生(名称)值('stuA')] 21:44:19592调试JdbcTemplate:416-执行SQL语句[插入学生(名称)值('stuB')] 21:44:19594调试事务Interceptor:406-在异常:java.lang.arithmetricException:/by零之后完成[com.bluesky.FooServiceImpl.insertA]的事务 21:44:19594调试RuleBasedTransactionAttribute:130-应用规则以确定事务是否应在java.lang.ArrithmeticException:/by 0上回滚 21:44:19594调试RuleBasedTransactionAttribute:147-成功回滚规则为:null 21:44:19595调试基于规则的TransactionAttribute:152-未找到相关回滚规则:应用默认规则 21:44:19595调试数据源TransactionManager:938-完成同步前触发 21:44:19595调试数据源TransactionManager:843-启动事务回滚 21:44:19596调试DataSourceTransactionManager:279-在连接[com.mysql.JDBC]上回滚JDBC事务。JDBC4Connection@167f4bf] 21:44:19598调试数据源TransactionManager:967-完成同步后触发 21:44:19598调试事务同步管理器:316-清除事务同步 我发现当调用
insertA()
方法时,该方法启动一个事务,当代码到达
insertB()
时,没有可启动的事务

是否存在我没有配置的内容或我弄错的问题


我的意图是当
insertA()
调用
insertB(
)时,有一个
需要新的
事务开始。

我理解您的问题。有一些技术上复杂的方法让它工作,但我们通常不认为它们是值得的。我建议使用另一种简单而强大的方法,实际上可以改进代码

不要把它们放在同一个春豆上,而是放在两个不同的豆子上,B被注入A

我知道我没有回答你的问题,但想想它的优点:

  • 非常简单,现在只需花费很少的时间
  • 为了需要一个新的事务,B可能是一个不同的关注点。不同的关注点是不同的类,这似乎正是我们所寻找的,好的设计
  • 您没有任何新的和复杂的东西要向同事解释(或为未来的开发人员编写文档),它的简单性使它立即易懂

KLE关于重构代码的建议是合算的,但至于为什么它不起作用,springaop默认使用它来提供AOP。这意味着,当您将服务注入到某个对象中时,真正注入的是实现服务接口的代理实例。在该代理上调用方法时,它会在委托给实际服务实例之前运行事务代码。但是,一旦控制流在您的服务中,通过
this.foo()
调用另一个方法(即使
this
是隐式的)只调用同一实例上的方法:您的服务。它不会返回到代理,代理是唯一了解事务的东西。要使用AspectJ构建或加载时字节码编织,您可以这样做,它将按预期工作,因为调用代码的事务将直接编织到您的服务代码中,而不是生活在单独的对象中。

KLE的答案是可靠的建议。为了完成这幅图,有一个变通方法,但它打破了AOP所代表的一切:

21:44:19,546 DEBUG TransactionSynchronizationManager:183 - Bound value [org.springframework.jdbc.datasource.ConnectionHolder@ba86ef] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@1b9658e] to thread [main] 21:44:19,546 DEBUG TransactionSynchronizationManager:258 - Initializing transaction synchronization 21:44:19,547 DEBUG TransactionInterceptor:362 - Getting transaction for [com.bluesky.FooServiceImpl.insertA] 21:44:19,547 DEBUG JdbcTemplate:416 - Executing SQL statement [insert student(name) values('stuA')] 21:44:19,592 DEBUG JdbcTemplate:416 - Executing SQL statement [insert student(name) values('stuB')] 21:44:19,594 DEBUG TransactionInterceptor:406 - Completing transaction for [com.bluesky.FooServiceImpl.insertA] after exception: java.lang.ArithmeticException: / by zero 21:44:19,594 DEBUG RuleBasedTransactionAttribute:130 - Applying rules to determine whether transaction should rollback on java.lang.ArithmeticException: / by zero 21:44:19,594 DEBUG RuleBasedTransactionAttribute:147 - Winning rollback rule is: null 21:44:19,595 DEBUG RuleBasedTransactionAttribute:152 - No relevant rollback rule found: applying default rules 21:44:19,595 DEBUG DataSourceTransactionManager:938 - Triggering beforeCompletion synchronization 21:44:19,595 DEBUG DataSourceTransactionManager:843 - Initiating transaction rollback 21:44:19,596 DEBUG DataSourceTransactionManager:279 - Rolling back JDBC transaction on Connection [com.mysql.jdbc.JDBC4Connection@167f4bf] 21:44:19,598 DEBUG DataSourceTransactionManager:967 - Triggering afterCompletion synchronization 21:44:19,598 DEBUG TransactionSynchronizationManager:316 - Clearing transaction synchronization 参考资料:


10亿感谢您的回复,我想知道当insertA()使用spring aop调用insertB()时是否没有效果(方法insertB()不应在spring事务控制中)?@user。。。我不确定我是否理解你的评论。在不同的bean上,Spring将确保事务按预期工作。如果您设置
需要新的
交易策略,您将得到您想要的。+1感谢您提供的技术详细信息。找到与需求接近的产品总是很好的。:-)+谢谢你的帮助!:-)我希望我的团队永远不会读到这篇文章,有些人可能会开始使用它:-))
public class Client {

    public static void main(String[] args) {

        ApplicationContext appContxt = new ClassPathXmlApplicationContext("applicationContext.xml");

        FooServiceIface  fService= (FooServiceIface)appContxt.getBean("fooService");

        fService.insertA();

    }
}
<?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: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-2.5.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
       <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
       <property name="url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf-8"/>
       <property name="username" value="root"/>
       <property name="password" value="root"/>
    </bean>

    <bean id="fooService" class="com.bluesky.FooServiceImpl">
         <property name="dataSource" ref="dataSource"/>  
    </bean>
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource"/>  
    </bean>  

    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="insertA" propagation="REQUIRED" />
             <tx:method name="insertB" propagation="REQUIRES_NEW" />
        </tx:attributes>
    </tx:advice>

    <aop:config proxy-target-class="true">
        <aop:pointcut id="interceptorPointCuts" expression="execution(* com.bluesky.*Service*.*(..))" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />       
    </aop:config>     
</beans>
21:44:19,546 DEBUG TransactionSynchronizationManager:183 - Bound value [org.springframework.jdbc.datasource.ConnectionHolder@ba86ef] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@1b9658e] to thread [main] 21:44:19,546 DEBUG TransactionSynchronizationManager:258 - Initializing transaction synchronization 21:44:19,547 DEBUG TransactionInterceptor:362 - Getting transaction for [com.bluesky.FooServiceImpl.insertA] 21:44:19,547 DEBUG JdbcTemplate:416 - Executing SQL statement [insert student(name) values('stuA')] 21:44:19,592 DEBUG JdbcTemplate:416 - Executing SQL statement [insert student(name) values('stuB')] 21:44:19,594 DEBUG TransactionInterceptor:406 - Completing transaction for [com.bluesky.FooServiceImpl.insertA] after exception: java.lang.ArithmeticException: / by zero 21:44:19,594 DEBUG RuleBasedTransactionAttribute:130 - Applying rules to determine whether transaction should rollback on java.lang.ArithmeticException: / by zero 21:44:19,594 DEBUG RuleBasedTransactionAttribute:147 - Winning rollback rule is: null 21:44:19,595 DEBUG RuleBasedTransactionAttribute:152 - No relevant rollback rule found: applying default rules 21:44:19,595 DEBUG DataSourceTransactionManager:938 - Triggering beforeCompletion synchronization 21:44:19,595 DEBUG DataSourceTransactionManager:843 - Initiating transaction rollback 21:44:19,596 DEBUG DataSourceTransactionManager:279 - Rolling back JDBC transaction on Connection [com.mysql.jdbc.JDBC4Connection@167f4bf] 21:44:19,598 DEBUG DataSourceTransactionManager:967 - Triggering afterCompletion synchronization 21:44:19,598 DEBUG TransactionSynchronizationManager:316 - Clearing transaction synchronization
public void insertA() {
    this.getJdbcTemplate().execute("insert student(name) values('stuA')");
    // this works, but... gah!
    ((FooServiceIface) AopContext.currentProxy()).insertB();
    int i=10/0;
}