一起学习Spring boot 2.1.X | 第十三篇：异常统一类

本文介绍如何在Spring MVC中配置异常处理，通过设置application属性和创建UnifyException类，实现对NoHandlerFoundException和其他异常的统一处理和日志记录。

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1.application

#Exception
spring.mvc.throwExceptionIfNoHandlerFound=true

2.创建异常类，UnifyException

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * 异常统一返回界面
 * 作者：我是沐沫
 */
@RestControllerAdvice
public class UnifyException {

    private final static Logger logger = LoggerFactory.getLogger(UnifyException.class);

    @ExceptionHandler(Exception.class)
    public void exceptionHandler(HttpServletRequest request, HttpServletResponse response, Exception e){
        if (e instanceof org.springframework.web.servlet.NoHandlerFoundException) {
            logger.info("400:" + request.getRequestURL() + " ,Error:" + e.getMessage());
        } else {
            logger.info("500:" + request.getRequestURL() + " ,Error:" + e.getMessage());
        }
    }

}

注：application必须添加，自己试验条件