spring事务传播机制-REQUIRED嵌套REQUIRES NEW

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最新推荐文章于 2025-03-31 10:00:00 发布

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本文链接：https://blog.youkuaiyun.com/qq_44894359/article/details/89676059

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本文探讨了Spring事务管理中的REQUIRED和REQUIRES_NEW两种传播级别。当在同一个Service类内嵌套调用时，即使内层使用REQUIRES_NEW，也不会开启新事务，导致整体事务回滚。而在不同Service类之间调用，REQUIRES_NEW则能确保新事务独立，回滚互不影响。通过测试代码和日志分析，详细展示了这两种事务传播特性的实际应用效果。

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如果在同一个service类中定义的两个方法，内层REQUIRES_NEW并不会开启新的事务，save和update中回滚都会导致整个事务的回滚
如果在不同的service中定义的两个方法，内层REQUIRES_NEW会开启新的事务，并且二者独立，事务回滚互不影响

测试：以下代码定义在UserService2中

/**    @Transactional(propagation = Propagation.REQUIRED)    @Override    public void save(UserRecord userParam) {        logger.info("开始执行 save {}, {}", userParam.getId(), userParam.getPhone());        userMapper.save(userParam);        try {            logger.info("save 完成---数据库中的值为 {} 开始 sleep", userParam.getId());            Thread.sleep(1000);            this.update(userParam);//          throw new RuntimeException();        } catch (InterruptedException e) {            e.printStackTrace();        }    }    @Transactional(propagation = Propagation.REQUIRES_NEW)    @Override    public Integer update(UserRecord userParam) {        logger.info("开始执行 update {}, {}", userParam.getId(), userParam.getPhone());        int result = userMapper.update(userParam);        try {            logger.info("update 完成---数据库中的值为 {} 开始 sleep");            Thread.sleep(1000 * 10);            logger.info("sleep结束");//          throw new RuntimeException();        } catch (InterruptedException e) {            e.printStackTrace();        }        return result;    }
  
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2017-12-24 08:46:43 [http-nio-9082-exec-3] INFO  c.c.service.impl.UserServiceImpl2 - 开始执行 save null, 152107123452017-12-24 08:46:43 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Creating a new SqlSession2017-12-24 08:46:43 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df]2017-12-24 08:46:43 [http-nio-9082-exec-3] DEBUG o.m.s.t.SpringManagedTransaction - JDBC Connection [com.mysql.jdbc.JDBC4Connection@665e820d] will be managed by Spring2017-12-24 08:46:43 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df]2017-12-24 08:46:43 [http-nio-9082-exec-3] INFO  c.c.service.impl.UserServiceImpl2 - save 完成---数据库中的值为 222599 开始 sleep2017-12-24 08:46:44 [http-nio-9082-exec-3] INFO  c.c.service.impl.UserServiceImpl2 - 开始执行 update 222599, 152107123452017-12-24 08:46:44 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Fetched SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df] from current transaction2017-12-24 08:46:44 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df]2017-12-24 08:46:44 [http-nio-9082-exec-3] INFO  c.c.service.impl.UserServiceImpl2 - update 完成---数据库中的值为 {} 开始 sleep2017-12-24 08:46:54 [http-nio-9082-exec-3] INFO  c.c.service.impl.UserServiceImpl2 - sleep结束2017-12-24 08:46:54 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df]2017-12-24 08:46:54 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df]2017-12-24 08:46:54 [http-nio-9082-exec-3] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@65e040df]
  
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测试两个save分别定义在UserService2和UserService3中

    @Transactional(propagation = Propagation.REQUIRED)    @Override    public void save(UserRecord userParam) {        logger.info("开始执行 save {}, {}", userParam.getId(), userParam.getPhone());        userMapper.save(userParam);        try {            logger.info("save 完成---数据库中的值为 {}", userParam.getId());            // if ("15210712347".equals(userParam.getPhone())) {            // throw new RuntimeException();            // }            Thread.sleep(1000);            userParam.setName("xxx");            userParam.setPhone("xxx");            userService3.save(userParam);//          throw new RuntimeException();        } catch (InterruptedException e) {            e.printStackTrace();        } catch (AppException ae) {            ae.printStackTrace();        }    }
  
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@Transactional(propagation = Propagation.REQUIRES_NEW)    @Override    public void save(UserRecord userParam) {        logger.info("开始执行 save {}, {}", userParam.getId(), userParam.getPhone());        userMapper.save(userParam);        try {            logger.info("save 完成---数据库中的值为 {} 开始 sleep", userParam.getId());            Thread.sleep(1000);//          throw new RuntimeException();// 注意在这抛出异常 会导致异常继续向上传递到userService2.save中导致两个事务都回滚            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();//只回滚到内层事务的，不会影响到userServive2的save回滚        } catch (InterruptedException e) {            e.printStackTrace();        }    }
  
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执行的日志如下

2017-12-24 10:59:43 [http-nio-9082-exec-6] INFO  c.c.service.impl.UserServiceImpl2 - 开始执行 save null, 152107123452017-12-24 10:59:43 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Creating a new SqlSession2017-12-24 10:59:43 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]2017-12-24 10:59:43 [http-nio-9082-exec-6] DEBUG o.m.s.t.SpringManagedTransaction - JDBC Connection [com.mysql.jdbc.JDBC4Connection@4528e9b7] will be managed by Spring2017-12-24 10:59:43 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]2017-12-24 10:59:43 [http-nio-9082-exec-6] INFO  c.c.service.impl.UserServiceImpl2 - save 完成---数据库中的值为 2226372017-12-24 10:59:44 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization suspending SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]2017-12-24 10:59:44 [http-nio-9082-exec-6] INFO  c.c.service.impl.UserServiceImpl3 - 开始执行 save 222637, xxx2017-12-24 10:59:44 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Creating a new SqlSession2017-12-24 10:59:44 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@53dd397f]2017-12-24 10:59:44 [http-nio-9082-exec-6] DEBUG o.m.s.t.SpringManagedTransaction - JDBC Connection [com.mysql.jdbc.JDBC4Connection@58a60a8c] will be managed by Spring2017-12-24 10:59:44 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@53dd397f]2017-12-24 10:59:44 [http-nio-9082-exec-6] INFO  c.c.service.impl.UserServiceImpl3 - save 完成---数据库中的值为 222638 开始 sleep2017-12-24 10:59:45 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@53dd397f]2017-12-24 10:59:45 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@53dd397f]2017-12-24 10:59:45 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization resuming SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]2017-12-24 10:59:45 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]2017-12-24 10:59:45 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]2017-12-24 10:59:45 [http-nio-9082-exec-6] DEBUG org.mybatis.spring.SqlSessionUtils - Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3321d64f]
  
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