强烈推荐一个大神的人工智能的教程:http://www.captainai.net/zhanghan
【前言】
处理好异常对系统有很好的保护作用同时会大大提高用户的体验,对异常统一处理是一个非常实用的技巧,接下来介绍一下如何在系统中对异常进行统一处理;
【统一异常处理】
一、未加统一异常处理时
启动程序,并访问http://localhost:8080/swagger-ui.html#/,中的lombok演示为例返回结果如下图所示,可见返回值是十分的不友好。
二、进行改造:
增加全局异常类:
/* * Copyright (c) 2019. zhanghan_java@163.com All Rights Reserved. * 项目名称:实战SpringBoot * 类名称:GlobalExceptionHandler.java * 创建人:张晗 * 联系方式:zhanghan_java@163.com * 开源地址: https://github.com/dangnianchuntian/springboot * 博客地址: https://blog.csdn.net/zhanghan18333611647 */ package com.zhanghan.zhboot.filter; import com.zhanghan.zhboot.util.wrapper.WrapMapper; import com.zhanghan.zhboot.util.wrapper.Wrapper; import lombok.extern.slf4j.Slf4j; import org.springframework.core.convert.ConversionFailedException; import org.springframework.http.HttpStatus; import org.springframework.http.converter.HttpMessageNotReadableException; import org.springframework.http.converter.HttpMessageNotWritableException; import org.springframework.validation.BindException; import org.springframework.web.bind.MethodArgumentNotValidException; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.ResponseStatus; import org.springframework.web.bind.annotation.RestControllerAdvice; /** * 全局的的异常拦截器 * * @author https://blog.csdn.net/zhanghan18333611647 */ @Slf4j @RestControllerAdvice public class GlobalExceptionHandler { /** * IllegalArgumentException * * @param e the e * @return the wrapper */ @ExceptionHandler(IllegalArgumentException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper illegalArgumentException(IllegalArgumentException e) { log.error("IllegalArgumentException={}", e.getMessage(), e); return WrapMapper.error("param error"); } /** * IllegalStateException * * @param e the e * @return the wrapper */ @ExceptionHandler(IllegalStateException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper IllegalStateException(IllegalStateException e) { log.error("IllegalStateException={}", e.getMessage(), e); return WrapMapper.error(); } /** * HttpMessageNotWritableException * * @param e the e * @return the wrapper */ @ExceptionHandler(HttpMessageNotWritableException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper HttpMessageNotWritableException(HttpMessageNotWritableException e) { log.error("HttpMessageNotWritableException={}", e.getMessage(), e); return WrapMapper.error(); } /** * HttpMessageNotReadableException * * @param e the e * @return the wrapper */ @ExceptionHandler(HttpMessageNotReadableException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper HttpMessageNotReadableException(HttpMessageNotReadableException e) { log.error("HttpMessageNotReadableException={}", e.getMessage(), e); return WrapMapper.error(); } /** * ConversionFailedException * * @param e the e * @return the wrapper */ @ExceptionHandler(ConversionFailedException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper ConversionFailedException(ConversionFailedException e) { log.error("ConversionFailedException={}", e.getMessage(), e); return WrapMapper.error(); } /** * BindException * * @param e the e * @return the wrapper */ @ExceptionHandler(BindException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper BindException(BindException e) { log.error("BindException={}", e.getMessage(), e); return WrapMapper.error(); } /** * MethodArgumentNotValidException * * @param e the e * @return the wrapper */ @ExceptionHandler(MethodArgumentNotValidException.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper validationError(MethodArgumentNotValidException e) { log.error("MethodArgumentNotValidException={}", e.getMessage(), e); return WrapMapper.error(); } /** * Exception * * @param e the e * @return the wrapper */ @ExceptionHandler(Exception.class) @ResponseStatus(HttpStatus.OK) @ResponseBody public Wrapper exception(Exception e) { log.error("Exception={}", e.getMessage(), e); return WrapMapper.error(); } }
三、改造后的效果:
四、项目地址及代码版本:
1、地址:https://github.com/dangnianchuntian/springboot
2、代码版本:1.3.0-Release
【总结】
1、提高用户的体验度;
2、统一处理大大减少开发的维护工作。