全局异常处理

使用mvc框架来做全局异常捕获并处理，提高了更好的交互。

注意：此异常处理类必须要交给IOC容易管理。

我是放到了controller包下的

package com.xiaohu.controller;

import com.xiaohu.domain.ResponseStatus;
import com.xiaohu.domain.ResponseVO;
import com.xiaohu.exception.MyRuntimeException;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * @ClassName: DefaultExceptionHandler
 * @Auther: zdragon
 * @Date: 2020/12/22 21:04
 * @Description: TODO
 * @Version: 1.0
 */

@ControllerAdvice
public class DefaultExceptionHandler {

    @ExceptionHandler(Throwable.class)
    @ResponseBody
    public ResponseVO handlerException(Throwable e) {
        ResponseVO vo = new ResponseVO();
        if (e instanceof MyRuntimeException) {
            MyRuntimeException exception = (MyRuntimeException) e;
            setResponseException(vo,exception.getResponseCode() , exception.getResponseMessage());
        } else {
            setResponseException(vo, ResponseStatus.ERROR.getCode(), e.getMessage());
        }

        return vo;
    }

    private void setResponseException(ResponseVO vo, String code, String message) {
        if (StringUtils.isBlank(code)) {
            code = ResponseStatus.ERROR.getCode();
        }
        vo.setResponseCode(code);
        vo.setResponseMessages(message);
    }
}