【Spring Boot 2.0学习之旅-04-5】SpringBoot2.x配置全局异常返回自定义页面

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本文介绍如何在SpringBoot2.0中实现全局异常处理并返回自定义页面，包括自定义异常类、异常处理类及错误页面的具体实现。

第四章 SpringBoot2.0单元测试进阶实战和自定义异常处理

03-5 SpringBoot2.x配置全局异常返回自定义页面

1.SpringBoot搭建测试框架

在这里插入图片描述

2.自定义异常

2.1 自定义异常类

package com.lcz.spring_demo7.domain;

/**
 * @author : codingchao
 * @date : 2021-11-19 16:20
 * @Description:
 **/
public class MyException extends RuntimeException{
    private String code;
    private String msg;

    public MyException(String code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }
}

2.2 自定义异常处理类

package com.lcz.spring_demo7.controller;

import com.lcz.spring_demo7.domain.MyException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.ModelAndView;

/**
 * @author : codingchao
 * @date : 2021-11-19 16:24
 * @Description:
 **/
@RestControllerAdvice
public class CustomExceptionHandler {
    private static final Logger log = LoggerFactory.getLogger(CustomExceptionHandler.class);

    @ExceptionHandler(value = MyException.class)
    public Object handleMyException(Exception e){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("error.html");
        modelAndView.addObject("msg",e.getMessage());
        return modelAndView;
    }
}

2.3 错误页面

在resources下定义error.html页面

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>出异常啦</h1>
</body>
</html>

2.4 模拟异常请求

package com.lcz.spring_demo7.controller;

import com.lcz.spring_demo7.domain.MyException;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author : codingchao
 * @date : 2021-11-19 16:43
 * @Description:
 **/
@RestController
public class ExceptionHandler {

    @GetMapping(value = "/myexception")
    public Object myexexception(){
        throw new MyException("499","模拟MyExcption异常");
    }
}