spring-mybatis使用事务

1.使用 TransactionTemplate

入口代码

    @Autowired
    TransactionTemplate transactionTemplate;
    
    
     public Long insert(User user) {

        TransactionCallback tc = new TransactionCallback() {

            @Override
            public Long doInTransaction(TransactionStatus transactionStatus) {
                userMapper.insert(user);
                System.out.println("插入1");

                user.setId(null);
                userMapper.insert(user);
                System.out.println("插入2");

                return 8989L;
            }

        };


        return transactionTemplate.execute(tc);
    }
    

配置文件

    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    bean>
    <bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
        <property name="transactionManager" ref="transactionManager"/>
    bean>

dataSource指向数据源即可

2.使用 TransactionProxyFactoryBean

这种方式不侵入业务代码，但是需要给每个需要事务的对象要配置一个代理类，也是比较繁琐

业务类

public class UserServiceImpl implements IUserService {

    public Long insert(User user) {

        userMapper.insert(user);
        System.out.println("插入1");

        try {
            TimeUnit.MINUTES.sleep(1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        user.setId(null);
        userMapper.insert(user);
        System.out.println("插入2");

        return 8989L;
    }
}

配置bean

    <bean id="userServiceImpl" class="com.bj58.car.parallel.imported.b2b.service.UserServiceImpl"/>

    
    <bean id="userServiceImplProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        
        <property name="target" ref="userServiceImpl" />
        
        <property name="transactionManager" ref="transactionManager"/>
        
        <property name="transactionAttributes">
            <props>
                
                
                <prop key="insert">PROPAGATION_REQUIREDprop>
                
                
            props>
        property>
    bean>

从配置文件中可以看到，我们为UserServiceImpl#insert方法配置了代理类UserServiceImplProxy，并且target指向了真正的业务bean

调用方

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/config_sandbox/app-config-mybatis.xml"})
public class UserServiceTest {
    @Autowired
    IUserService userServiceImplProxy = null;//使用接口
    
        @Test
    public void testTR() {

        User user = new User();
        user.setName("TR测试");
        user.setPhone("1111111111");

        System.out.println(userServiceImplProxy.insert(user));

        System.out.println("down");

    }

}

这里注意一点，需要使用接口类来承接，并且对象名字跟xml中的id一致，这样才使用了代理

3.aop xml使用方式

这种方式不会侵入业务代码，且xml配置简单

<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED" />
            <tx:method name="append*" propagation="REQUIRED" />
            <tx:method name="insert*" propagation="REQUIRED" />
            <tx:method name="save*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="modify*" propagation="REQUIRED" />
            <tx:method name="edit*" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="remove*" propagation="REQUIRED" />
            <tx:method name="repair" propagation="REQUIRED" />
            <tx:method name="delAndRepair" propagation="REQUIRED" />
            <tx:method name="get*" propagation="SUPPORTS" />
            <tx:method name="find*" propagation="SUPPORTS" />
            <tx:method name="load*" propagation="SUPPORTS" />
            <tx:method name="search*" propagation="SUPPORTS" />
            <tx:method name="datagrid*" propagation="SUPPORTS" />
            <tx:method name="*" propagation="SUPPORTS" />
        tx:attributes>
    tx:advice>
    
     <aop:config >
        <aop:pointcut id="p1" expression="(execution(public * com.*.service.*.*(..)))"/>
        <aop:advisor advice-ref="transactionAdvice" pointcut-ref="p1"/>
    aop:config>

将要添加事务的方法在advice中添加即可

业务类更上面一样，不侵入一行代码。调用方式也很简单

4.注解方式

只使用Transactional注解即可

在配置文件中开启事务注解

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


<tx:annotation-driven transaction-manager="transactionManager"/>

业务类

只需要添加Transactional注解即可

    @Transactional(propagation = Propagation.REQUIRED)
    public Long insert(User user) {

        userMapper.insert(user);
        System.out.println("插入1");

        user.setId(null);
        userMapper.insert(user);
        System.out.println("插入2");

        return 8989L;
    }