@ResponseStatus注解的使用

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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。

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