全局捕获异常类

spring 全局捕获异常类：

package com.xxx.emp.ControllerAdvice;

import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.validation.ConstraintViolationException;
import java.util.HashMap;
import java.util.Map;


@ControllerAdvice
@Component
public class ValidAdvice {
    @ExceptionHandler(ConstraintViolationException.class)
    @ResponseBody
    public Map<String, Object> handleConstraintViolationException(ConstraintViolationException e){
        Map<String, Object> map = new HashMap<>();
        map.put("code",-444);
        map.put("msg","参数验证不通过");
        return map;
    }
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseBody
    public Map<String, Object> handleMethodArgumentNotValidException(MethodArgumentNotValidException e){
        Map<String, Object> map = new HashMap<>();
        map.put("code",-444);
        map.put("msg","参数验证不通过");
        return map;
    }
    @ExceptionHandler(HttpMessageNotReadableException.class)
    @ResponseBody
    public Map<String, Object> handleHttpMessageNotReadableException(HttpMessageNotReadableException e){
        Map<String, Object> map = new HashMap<>();
        map.put("code",-444);
        map.put("msg","参数验证不通过");
        return map;
    }


}

@ControllerAdvice 与 @ExceptionHandler 注解
解释参考：https://www.jianshu.com/p/537509946453