@Transactional 事务失效场景类内部调用实测

环境springboot2.7，mysql5.7

demo1

@Component
@Order(6)
@Slf4j
public class TestRunner implements ApplicationRunner {

    @Autowired
    TestService testService;

    @Override
    public void run(ApplicationArguments args) throws Exception {
        testService.insertAndUpdate();
    }
}

@Service("testService")
public class TestServiceImpl extends ServiceImpl<TestMapper, Test> implements TestService {

    @Override
    public boolean updateByIdOne() {
        LambdaUpdateWrapper<Test> lambdaUpdateWrapper = new UpdateWrapper<Test>().lambda();
        lambdaUpdateWrapper.eq(Test::getId,1);
        lambdaUpdateWrapper.set(Test::getName,"test");

        return this.update(lambdaUpdateWrapper);
    }

    @Transactional(rollbackFor = RuntimeException.class)
    @Override
    public boolean insertAndUpdate() {
        boolean b = this.updateByIdOne();


        Test test = new Test();
        test.setName("2222");


        boolean save = this.save(test);
        if(b){
            throw new RuntimeException("ts");
        }
        return save;
    }
}

以上代码先跑一遍，看看抛出异常情况，能不能回滚

看库  毫无变化

 

 

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 看主键递增量其实是插入过了，我觉得事务还是生效了

demo2

@Service("testService")
public class TestServiceImpl extends ServiceImpl<TestMapper, Test> implements TestService {

    @Transactional(rollbackFor = RuntimeException.class)
    @Override
    public boolean updateByIdOne() {
        LambdaUpdateWrapper<Test> lambdaUpdateWrapper = new UpdateWrapper<Test>().lambda();
        lambdaUpdateWrapper.eq(Test::getId,1);
        lambdaUpdateWrapper.set(Test::getName,"test");
        boolean update = this.update(lambdaUpdateWrapper);

        if(update){
            throw new RuntimeException("updateByIdOne");
        }

        LambdaUpdateWrapper<Test> lambdaUpdateWrapper2 = new UpdateWrapper<Test>().lambda();
        lambdaUpdateWrapper2.eq(Test::getId,2);
        lambdaUpdateWrapper2.set(Test::getName,"test");
        boolean update1 = this.update(lambdaUpdateWrapper2);

        return update;
    }

    @Transactional(rollbackFor = RuntimeException.class)
    @Override
    public boolean insertAndUpdate() {

        Test test = new Test();
        test.setName("2222");
        boolean save = this.save(test);

        boolean b = this.updateByIdOne();

        return save;
    }
}

执行结果

子父方法都有事务注解，事务生效

demo3

@Service("testService")
public class TestServiceImpl extends ServiceImpl<TestMapper, Test> implements TestService {

    @Override
    public boolean updateByIdOne() {
        LambdaUpdateWrapper<Test> lambdaUpdateWrapper = new UpdateWrapper<Test>().lambda();
        lambdaUpdateWrapper.eq(Test::getId,1);
        lambdaUpdateWrapper.set(Test::getName,"test");
        boolean update = this.update(lambdaUpdateWrapper);

        if(update){
            throw new RuntimeException("updateByIdOne");
        }

        return update;
    }
    @Transactional(rollbackFor = RuntimeException.class)
    @Override
    public boolean insertAndUpdate() {

        Test test = new Test();
        test.setName("2222");
        boolean save = this.save(test);


        boolean b = this.updateByIdOne();
        return b;
    }
}

insertAndUpdate插入成功后又回滚，update 更新成功也回滚，事务生效

demo4

@Service("testService")
public class TestServiceImpl extends ServiceImpl<TestMapper, Test> implements TestService {

    @Transactional(rollbackFor = RuntimeException.class)
    @Override
    public boolean updateByIdOne() {
        LambdaUpdateWrapper<Test> lambdaUpdateWrapper = new UpdateWrapper<Test>().lambda();
        lambdaUpdateWrapper.eq(Test::getId,1);
        lambdaUpdateWrapper.set(Test::getName,"test");
        boolean update = this.update(lambdaUpdateWrapper);

        if(update){
            throw new RuntimeException("updateByIdOne");
        }

        LambdaUpdateWrapper<Test> lambdaUpdateWrapper2 = new UpdateWrapper<Test>().lambda();
        lambdaUpdateWrapper2.eq(Test::getId,2);
        lambdaUpdateWrapper2.set(Test::getName,"test");
        boolean update1 = this.update(lambdaUpdateWrapper2);

        return update;
    }

    @Override
    public boolean insertAndUpdate() {
        boolean b = this.updateByIdOne();

        return b;
    }
}

 

 以上代码一跑，结果就很清楚了。

1、在同类中调用，二个方法都有加上事务注解，生效

2、同类中，子方法有事务注解，父类方法无事务注解，在controller层调用父类方法，子方法事务不生效

3、同类中，子方法无事务注解，父类方法有事务注解，在controller层调用父类方法，之方法事务生效