（转）@ResponseStatus注解的使用

带有@ResponseStatus注解的异常类会被ResponseStatusExceptionResolver 解析。可以实现自定义的一些异常,同时在页面上进行显示。具体的使用方法如下:

1.首先定义一个异常类：

@ResponseStatus(value = HttpStatus.FORBIDDEN,reason = "用户名和密码不匹配!") public class UserNameNotMatchPasswordException extends RuntimeException{          }

2.人为抛出一个异常:   @RequestMapping("/testResponseStatusExceptionResolver")     public String testResponseStatusExceptionResolver(@RequestParam("i") int i){         if (i==13){             throw new UserNameNotMatchPasswordException();         }         System.out.println("testResponseStatusExceptionResolver....");         return "success";     }

3.输入如下额路径: http://localhost:8090/testResponseStatusExceptionResolver?i=13

当然，也可以在方法上进行修饰:

@ResponseStatus(reason = "测试",value = HttpStatus.NOT_FOUND)     @RequestMapping("/testResponseStatusExceptionResolver")     public String testResponseStatusExceptionResolver(@RequestParam("i") int i){         if (i==13){             throw new UserNameNotMatchPasswordException();         }         System.out.println("testResponseStatusExceptionResolver....");         return "success";     }

这时所有的请求都会报错。