1.定義基礎異常接口類

/*** @description: 服務接口類* @author: MrVK* @date: 2021/4/19 21:39*/
public interface BaseErrorInfoInterface {/***  錯誤碼* @return*/String getResultCode();/*** 錯誤描述* @return*/String getResultMsg();
}

2.定義錯誤處理枚舉類

/*** @description: 異常處理枚舉類* @author: MrVK* @date: 2021/4/19 21:41* @version: v1.0*/
public enum ExceptionEnum implements BaseErrorInfoInterface{// 數據操作錯誤定義SUCCESS("2000", "成功!"),BODY_NOT_MATCH("4000","請求的數據格式不符!"),SIGNATURE_NOT_MATCH("4001","請求的數字簽名不匹配!"),NOT_FOUND("4004", "未找到該資源!"),INTERNAL_SERVER_ERROR("5000", "服務器內部錯誤!"),SERVER_BUSY("5003","服務器正忙，請稍后再試!");/*** 錯誤碼*/private final String resultCode;/*** 錯誤描述*/private final String resultMsg;ExceptionEnum(String resultCode, String resultMsg) {this.resultCode = resultCode;this.resultMsg = resultMsg;}@Overridepublic String getResultCode() {return resultCode;}@Overridepublic String getResultMsg() {return resultMsg;}
}

3.自定義異常類

/*** @description: 自定義異常類* @author: MrVK* @date: 2021/4/19 21:44* @version: v1.0*/
public class BizException extends RuntimeException{private static final long serialVersionUID = 1L;/*** 錯誤碼*/protected String errorCode;/*** 錯誤信息*/protected String errorMsg;public BizException() {super();}public BizException(BaseErrorInfoInterface errorInfoInterface) {super(errorInfoInterface.getResultCode());this.errorCode = errorInfoInterface.getResultCode();this.errorMsg = errorInfoInterface.getResultMsg();}public BizException(BaseErrorInfoInterface errorInfoInterface, Throwable cause) {super(errorInfoInterface.getResultCode(), cause);this.errorCode = errorInfoInterface.getResultCode();this.errorMsg = errorInfoInterface.getResultMsg();}public BizException(String errorMsg) {super(errorMsg);this.errorMsg = errorMsg;}public BizException(String errorCode, String errorMsg) {super(errorCode);this.errorCode = errorCode;this.errorMsg = errorMsg;}public BizException(String errorCode, String errorMsg, Throwable cause) {super(errorCode, cause);this.errorCode = errorCode;this.errorMsg = errorMsg;}public String getErrorCode() {return errorCode;}public void setErrorCode(String errorCode) {this.errorCode = errorCode;}public String getErrorMsg() {return errorMsg;}public void setErrorMsg(String errorMsg) {this.errorMsg = errorMsg;}@Overridepublic Throwable fillInStackTrace() {return this;}
}

4.自定義響應體類

/*** @description: 自定義數據傳輸* @author: MrVK* @date: 2021/4/19 21:47* @version: v1.0*/
public class ResultResponse {/*** 響應代碼*/private String code;/*** 響應消息*/private String message;/*** 響應結果*/private Object result;public ResultResponse() {}public ResultResponse(BaseErrorInfoInterface errorInfo) {this.code = errorInfo.getResultCode();this.message = errorInfo.getResultMsg();}public String getCode() {return code;}public void setCode(String code) {this.code = code;}public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}public Object getResult() {return result;}public void setResult(Object result) {this.result = result;}/*** 成功** @return*/public static ResultResponse success() {return success(null);}/*** 成功* @param data* @return*/public static ResultResponse success(Object data) {ResultResponse rb = new ResultResponse();rb.setCode(ExceptionEnum.SUCCESS.getResultCode());rb.setMessage(ExceptionEnum.SUCCESS.getResultMsg());rb.setResult(data);return rb;}/*** 失敗*/public static ResultResponse error(BaseErrorInfoInterface errorInfo) {ResultResponse rb = new ResultResponse();rb.setCode(errorInfo.getResultCode());rb.setMessage(errorInfo.getResultMsg());rb.setResult(null);return rb;}/*** 失敗*/public static ResultResponse error(String code, String message) {ResultResponse rb = new ResultResponse();rb.setCode(code);rb.setMessage(message);rb.setResult(null);return rb;}/*** 失敗*/public static ResultResponse error( String message) {ResultResponse rb = new ResultResponse();rb.setCode("-1");rb.setMessage(message);rb.setResult(null);return rb;}@Overridepublic String toString() {return JSONObject.toJSONString(this);}}

5.自定義全局異常處理

/*** @description: 自定義異常處理* @author: MrVK* @date: 2021/4/19 21:51* @version: v1.0*/
@ControllerAdvice
public class GlobalExceptionHandler {private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);/*** 處理自定義的業務異常* @param req* @param e* @return*/@ExceptionHandler(value = BizException.class)@ResponseBodypublic ResultResponse bizExceptionHandler(HttpServletRequest req, BizException e){logger.error("發生業務異常！原因是：{}",e.getErrorMsg());return ResultResponse.error(e.getErrorCode(),e.getErrorMsg());}/*** 處理空指針的異常* @param req* @param e* @return*/@ExceptionHandler(value =NullPointerException.class)@ResponseBodypublic ResultResponse exceptionHandler(HttpServletRequest req, NullPointerException e){logger.error("發生空指針異常！原因是:",e);return ResultResponse.error(ExceptionEnum.BODY_NOT_MATCH);}/*** 處理其他異常* @param req* @param e* @return*/@ExceptionHandler(value =Exception.class)@ResponseBodypublic ResultResponse exceptionHandler(HttpServletRequest req, Exception e){logger.error("未知異常！原因是:",e);return ResultResponse.error(ExceptionEnum.INTERNAL_SERVER_ERROR);}
}

6.測試代碼

@PostMapping("/add")
public boolean add(@RequestBody User user) {//如果姓名為空就手動拋出一個自定義的異常！if(user.getName()==null){throw  new BizException("-1","用戶姓名不能為空！");}return true;
}@PutMapping("/update")
public boolean update(@RequestBody User user) {//這里故意造成一個空指針的異常，并且不進行處理String str = null;str.equals("111");return true;
}@DeleteMapping("/delete")
public boolean delete(@RequestBody User user)  {//這里故意造成一個異常，并且不進行處理Integer.parseInt("abc123");return true;
}@GetMapping("/error")
@ExceptionHandler(value = NumberFormatException.class)
@ResponseBody
public ResultResponse exceptionHandler(HttpServletRequest req, NumberFormatException e){logger.error("發生類型轉換異常！原因是:",e);return ResultResponse.error(ExceptionEnum.PARAMS_NOT_CONVERT);
}

7.測試結果