import com.jiusen.exercise.enums.ErrorEnum;import com.jiusen.exercise.exception.BusinessException;import lombok.Getter;import lombok.Setter; /** * @author: Lawson * @date: 2021/5/11 * @description: TODO 統一的返回結果 */@Getter@Setterpublic class AjaxResult { //是否成功 private Boolean success; //狀態碼 private Integer code; //提示信息 private String msg; //數據 private Object data; public AjaxResult() { } //自定義返回結果的構造方法 public AjaxResult(Boolean success, Integer code, String msg, Object data) {this.success = success;this.code = code;this.msg = msg;this.data = data; } //自定義異常返回的結果 public static AjaxResult defineError(BusinessException de) {AjaxResult result = new AjaxResult();result.setSuccess(false);result.setCode(de.getErrorCode());result.setMsg(de.getErrorMsg());result.setData(null);return result; } //其他異常處理方法返回的結果 public static AjaxResult otherError(ErrorEnum errorEnum){AjaxResult result = new AjaxResult();result.setMsg(errorEnum.getErrorMsg());result.setCode(errorEnum.getErrorCode());result.setSuccess(false);result.setData(null);return result; }}二、自定義異常封裝類

import lombok.Getter;import lombok.Setter; /** * @author: Lawson * @date: 2021/5/11 * @description: TODO 類描述 */@Getter@Setterpublic class BusinessException extends RuntimeException{ private static final long serialVersionUID = 1L; /** * 錯誤狀態碼 */ protected Integer errorCode; /** * 錯誤提示 */ protected String errorMsg; public BusinessException() { } public BusinessException(String message, Integer errorCode, String errorMsg) {super(message);this.errorCode = errorCode;this.errorMsg = errorMsg; }}三、錯誤枚舉

** * @author: Lawson * @date: 2021/5/11 * @description: TODO 類描述 */public enum ErrorEnum { //數據操作錯誤定義 SUCCESS(200, '成功'), NO_PERMISSION(403, '你無權訪問'), NO_Auth(401, '未授權，請登錄驗證'), NO_FOUND(404, '未找到資源'), INTERNAL_SERVER_ERROR(500, '服務器異常, 請聯系管理員!'); /** * 錯誤碼 */ private Integer errorCode; /** * 錯誤信息 */ private String errorMsg; ErrorEnum(Integer errorCode, String errorMsg) {this.errorCode = errorCode;this.errorMsg = errorMsg; } public Integer getErrorCode() {return errorCode; } public String getErrorMsg() {return errorMsg; }}四、全局異常處理類

import com.jiusen.exercise.enums.ErrorEnum;import com.jiusen.exercise.exception.BusinessException;import com.jiusen.exercise.rest.AjaxResult;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.RestControllerAdvice; /** * @author: Lawson * @date: 2021/5/11 * @description: TODO 類描述 */@RestControllerAdvicepublic class GlobalExceptionHandler { private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class); /** * 處理自定義異常 * @param e * @return */ @ExceptionHandler(value = BusinessException.class) public AjaxResult bizExceptionHandler(BusinessException e) {log.error(e.getErrorMsg(), e);return AjaxResult.defineError(e); } /** * 處理其它異常 */ @ExceptionHandler(value = Exception.class) public AjaxResult exceptionHandler(Exception e) {log.error(e.getMessage(), e);return AjaxResult.otherError(ErrorEnum.INTERNAL_SERVER_ERROR); }}五、測試

import com.jiusen.exercise.enums.ErrorEnum;import com.jiusen.exercise.exception.BusinessException;import com.jiusen.exercise.rest.AjaxResult;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.RestControllerAdvice; /** * @author: Lawson * @date: 2021/5/11 * @description: TODO 類描述 */@RestControllerAdvicepublic class GlobalExceptionHandler { private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class); /** * 處理自定義異常 * @param e * @return */ @ExceptionHandler(value = BusinessException.class) public AjaxResult bizExceptionHandler(BusinessException e) {log.error(e.getErrorMsg(), e);return AjaxResult.defineError(e); } /** * 處理其它異常 */ @ExceptionHandler(value = Exception.class) public AjaxResult exceptionHandler(Exception e) {log.error(e.getMessage(), e);return AjaxResult.otherError(ErrorEnum.INTERNAL_SERVER_ERROR); }}

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