SpringBoot使用注解实现事务管理

conttoller 

    controller和普通的controller类一样, 不用改变

   @RequestMapping(value = "/path/{id}", method = RequestMethod.DELETE, produces = "application/json")
    @ResponseBody
    public Result delete(HttpServletRequest request,@PathVariable("id") Long id) {
        Result result = null;
        try {
            result = DeleteService.delete(id);
        } catch (Exception e) {
            result = Result.getFailResult("删除记录失败");//前台用来显示出错信息
        }
        return result;
    }

Service

   首先在方法上加上 @Transactional(rollbackFor = Exception.class)  , 然后在该方法后面加上 throws Exception ,

   为了不报错,我们还须 DeleteService 接口中对应的delete()方法签名修改为:

 

public void delete(Integer personid) throws Exception;

 

rollbackFor  该属性用于设置需要进行回滚的异常类数组,当方法中抛出指定异常数组中的异常时,则进行事务回滚。

 

@Service
public class DeleteServiceImp implements DeleteService {
   @Override @Transactional(rollbackFor
= Exception.class)//设置检查时异常时回滚事务 public Result delete(Long id) throws Exception { Result result = null; int num = myMapper.delete(id); int index = 0; if (0 < num) { index = anotherMapper.deleteById(id); if (0 < index) { result = Result.getSuccessResult("删除版本记录成功"); } else { throw new Exception("删除版本记录失败"); //删除关联表失败时,抛出一个异常 用来触发回滚 } } else { throw new Exception("删除项目失败"); //删除失败时, 抛出异常 用来触发回滚 } return result; } }

 最后在程序入口类 Application.java 上加上注解 @EnableTransactionManagement , 开启事务注解

 

参考:https://blog.csdn.net/yerenyuan_pku/article/details/52885041

posted @ 2018-12-26 15:21  弓长张&木子李  阅读(4639)  评论(0编辑  收藏  举报