SpringBoot实战(十):统一异常处理

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本文链接: https://blog.csdn.net/u012829124/article/details/93235833

强烈推荐一个大神的人工智能的教程:http://www.captainbed.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. [email protected] All Rights Reserved.
 * 项目名称:实战SpringBoot
 * 类名称:GlobalExceptionHandler.java
 * 创建人:张晗
 * 联系方式:[email protected]
 * 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。

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转载自blog.csdn.net/u012829124/article/details/93235833