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SpringBoot的@ControllerAdvice處理全局異常詳解

更新時間：2024年01月09日 10:23:08 作者：豬哥66

這篇文章主要介紹了SpringBoot的@ControllerAdvice處理全局異常詳解,但有時卻往往會產(chǎn)生一些bug,這時候就破壞了返回數(shù)據(jù)的一致性,導(dǎo)致調(diào)用者無法解析,所以我們常常會定義一個全局的異常攔截器,需要的朋友可以參考下

@ControllerAdvice處理全局異常

需求

在構(gòu)建RestFul的今天，我們一般會限定好返回數(shù)據(jù)的格式比如：

{<!--{cke_protected}{C}%3C!%2D%2D%20%2D%2D%3E--> 
??????? "code": 0,
  "data": {},
  "msg": "操作成功"
}

但有時卻往往會產(chǎn)生一些bug。這時候就破壞了返回數(shù)據(jù)的一致性，導(dǎo)致調(diào)用者無法解析。

所以我們常常會定義一個全局的異常攔截器。

注意：ControllerAdvice注解只攔截Controller 不回攔截 Interceptor的異常

介紹

在spring 3.2中，新增了@ControllerAdvice 注解，用于攔截全局的Controller的異常，注意：ControllerAdvice注解只攔截Controller不會攔截Interceptor的異常

代碼

package com.cmc.schedule.handler;
import com.gionee.base.entity.JsonResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.ConversionNotSupportedException;
import org.springframework.beans.TypeMismatchException;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;
import org.springframework.web.HttpMediaTypeNotAcceptableException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MissingServletRequestParameterException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import java.io.IOException;
/**
 * 異常攔截處理器
 *
 * @author chenmc
 */
@ControllerAdvice
@ResponseBody
public class GlobalExceptionHandler {
    private static final String logExceptionFormat = "Capture Exception By GlobalExceptionHandler: Code: %s Detail: %s";
    private static Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);
    //運(yùn)行時異常  
    @ExceptionHandler(RuntimeException.class)
    public String runtimeExceptionHandler(RuntimeException ex) {
        return resultFormat(1, ex);
    }
    //空指針異常  
    @ExceptionHandler(NullPointerException.class)
    public String nullPointerExceptionHandler(NullPointerException ex) {
        return resultFormat(2, ex);
    }
    //類型轉(zhuǎn)換異常  
    @ExceptionHandler(ClassCastException.class)
    public String classCastExceptionHandler(ClassCastException ex) {
        return resultFormat(3, ex);
    }
    //IO異常  
    @ExceptionHandler(IOException.class)
    public String iOExceptionHandler(IOException ex) {
        return resultFormat(4, ex);
    }
    //未知方法異常  
    @ExceptionHandler(NoSuchMethodException.class)
    public String noSuchMethodExceptionHandler(NoSuchMethodException ex) {
        return resultFormat(5, ex);
    }
    //數(shù)組越界異常  
    @ExceptionHandler(IndexOutOfBoundsException.class)
    public String indexOutOfBoundsExceptionHandler(IndexOutOfBoundsException ex) {
        return resultFormat(6, ex);
    }
    //400錯誤  
    @ExceptionHandler({HttpMessageNotReadableException.class})
    public String requestNotReadable(HttpMessageNotReadableException ex) {
        System.out.println("400..requestNotReadable");
        return resultFormat(7, ex);
    }
    //400錯誤  
    @ExceptionHandler({TypeMismatchException.class})
    public String requestTypeMismatch(TypeMismatchException ex) {
        System.out.println("400..TypeMismatchException");
        return resultFormat(8, ex);
    }
    //400錯誤  
    @ExceptionHandler({MissingServletRequestParameterException.class})
    public String requestMissingServletRequest(MissingServletRequestParameterException ex) {
        System.out.println("400..MissingServletRequest");
        return resultFormat(9, ex);
    }
    //405錯誤  
    @ExceptionHandler({HttpRequestMethodNotSupportedException.class})
    public String request405(HttpRequestMethodNotSupportedException ex) {
        return resultFormat(10, ex);
    }
    //406錯誤  
    @ExceptionHandler({HttpMediaTypeNotAcceptableException.class})
    public String request406(HttpMediaTypeNotAcceptableException ex) {
        System.out.println("406...");
        return resultFormat(11, ex);
    }
    //500錯誤  
    @ExceptionHandler({ConversionNotSupportedException.class, HttpMessageNotWritableException.class})
    public String server500(RuntimeException ex) {
        System.out.println("500...");
        return resultFormat(12, ex);
    }
    //棧溢出
    @ExceptionHandler({StackOverflowError.class})
    public String requestStackOverflow(StackOverflowError ex) {
        return resultFormat(13, ex);
    }
    //其他錯誤
    @ExceptionHandler({Exception.class})
    public String exception(Exception ex) {
        return resultFormat(14, ex);
    }
    private <T extends Throwable> String resultFormat(Integer code, T ex) {
        ex.printStackTrace();
        log.error(String.format(logExceptionFormat, code, ex.getMessage()));
        return JsonResult.failed(code, ex.getMessage());
    }
}

package com.cmc.base.entity;
import com.alibaba.fastjson.JSON;
import lombok.Data;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
/**
 * @author chenmc
 * @date 2017/10/12 17:18
 */
@Data
public class JsonResult implements Serializable{
    private int code;   //返回碼 非0即失敗
    private String msg; //消息提示
    private Map<String, Object> data; //返回的數(shù)據(jù)
    public JsonResult(){};
    public JsonResult(int code, String msg, Map<String, Object> data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }
    public static String success() {
        return success(new HashMap<>(0));
    }
    public static String success(Map<String, Object> data) {
        return JSON.toJSONString(new JsonResult(0, "解析成功", data));
    }
    public static String failed() {
        return failed("解析失敗");
    }
    public static String failed(String msg) {
        return failed(-1, msg);
    }
    public static String failed(int code, String msg) {
        return JSON.toJSONString(new JsonResult(code, msg, new HashMap<>(0)));
    }
}

Spring Boot這樣就可以了，如果是沒用Spring Boot的話，需要在SpringMvc的配置文件中增加下面的配置

<!-- 處理異常 -->
    <context:component-scan base-package="com.gionee.xo" use-default-filters="false">  
	    <!-- base-package 如果多個，用“,”分隔 -->  
	    <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />  
	    <!--控制器增強(qiáng)，使一個Contoller成為全局的異常處理類，類中用@ExceptionHandler方法注解的方法可以處理所有Controller發(fā)生的異常-->  
	    <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice" />  
	</context:component-scan>

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