Spring MVC 异常处理

作用在类和方法上面 更改返回的代码和错误消息

类上 通过throw new UserName***Exception()抛出

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

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    
}

 方法上 方法执行通过，但是返回会有错误，因为配置了@ResponseStatus

@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";
    }