SpringBoot： 15.异常处理方式5(通过实现HandlerExceptionResolver类)（转）

修改异常处理方式4中的全局异常处理controller

package com.bjsxt.exception;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.lang.Nullable;

import org.springframework.web.servlet.HandlerExceptionResolver;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.util.Properties;

/**

 * Created by Administrator on 2019/2/14.

 * 全局异常处理类,通过实现 HandlerExceptionResolver类做全局异常处理

 * 优点：相对于方法4可以传递异常信息

 */

@Configuration

public class GlobalException implements HandlerExceptionResolver{

    @Override

    public ModelAndView resolveException(HttpServletRequest httpServletRequest,

           HttpServletResponse httpServletResponse, @Nullable Object o, Exception e) {

        ModelAndView mv = new ModelAndView();

        //判断不同异常类型，做不同视图跳转

        if(e instanceof ArithmeticException){

            mv.setViewName("error_arithmetic");

        }

        if(e instanceof NullPointerException){

            mv.setViewName("error_nullPointer");

        }

        mv.addObject("msg", e.toString());

        return mv;

    }

}