強烈推薦一個大神的人工智能的教程:http://www.captainbed.net/zhanghan
【前言】
處理好異常對系統有很好的保護作用同時會大大提高用戶的體驗,對異常統一處理是一個非常實用的技巧,接下來介紹一下如何在系統中對異常進行統一處理;
【統一異常處理】
一、未加統一異常處理時
啓動程序,並訪問http://localhost:8080/swagger-ui.html#/,中的lombok演示爲例返回結果如下圖所示,可見返回值是十分的不友好。
二、進行改造:
增加全局異常類:
/*
* Copyright (c) 2019. [email protected] All Rights Reserved.
* 項目名稱:實戰SpringBoot
* 類名稱:GlobalExceptionHandler.java
* 創建人:張晗
* 聯繫方式:[email protected]
* 開源地址: 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;
/**
* 全局的的異常攔截器
*
* @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、改造後的效果:
四、項目地址及代碼版本:
1、地址:https://github.com/dangnianchuntian/springboot
2、代碼版本:1.3.0-Release
【總結】
1、提高用戶的體驗度;
2、統一處理大大減少開發的維護工作。