SpringBoot使用注解实现事务管理

2018-12-27 07:41:48来源：博客园阅读 ()

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;
    }
}