Spring Boot全局统一异常处理器

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 统一的返回结果 */@Getter@Setterpublic class AjaxResult { //是否成功 private Boolean success; //状态码 private Integer code; //提示信息 private String msg; //数据 private Object data; public AjaxResult() { } //自定义返回结果的构造方法 public AjaxResult(Boolean success, Integer code, String msg, Object data) {this.success = success;this.code = code;this.msg = msg;this.data = data; } //自定义异常返回的结果 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; } //其他异常处理方法返回的结果 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、自定义异常封装类

import lombok.Getter;import lombok.Setter; /** * @author: Lawson * @date: 2021/5/11 * @description: TODO 类描述 */@Getter@Setterpublic class BusinessException extends RuntimeException{ private static final long serialVersionUID = 1L; /** * 错误状态码 */ protected Integer errorCode; /** * 错误提示 */ protected String errorMsg; public BusinessException() { } public BusinessException(String message, Integer errorCode, String errorMsg) {super(message);this.errorCode = errorCode;this.errorMsg = errorMsg; }}三、错误枚举

** * @author: Lawson * @date: 2021/5/11 * @description: TODO 类描述 */public enum ErrorEnum { //数据操作错误定义 SUCCESS(200, '成功'), NO_PERMISSION(403, '你无权访问'), NO_Auth(401, '未授权，请登录验证'), NO_FOUND(404, '未找到资源'), INTERNAL_SERVER_ERROR(500, '服务器异常, 请联系管理员!'); /** * 错误码 */ private Integer errorCode; /** * 错误信息 */ 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、全局异常处理类

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 类描述 */@RestControllerAdvicepublic class GlobalExceptionHandler { private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class); /** * 处理自定义异常 * @param e * @return */ @ExceptionHandler(value = BusinessException.class) public AjaxResult bizExceptionHandler(BusinessException e) {log.error(e.getErrorMsg(), e);return AjaxResult.defineError(e); } /** * 处理其它异常 */ @ExceptionHandler(value = Exception.class) public AjaxResult exceptionHandler(Exception e) {log.error(e.getMessage(), e);return AjaxResult.otherError(ErrorEnum.INTERNAL_SERVER_ERROR); }}五、测试

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 类描述 */@RestControllerAdvicepublic class GlobalExceptionHandler { private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class); /** * 处理自定义异常 * @param e * @return */ @ExceptionHandler(value = BusinessException.class) public AjaxResult bizExceptionHandler(BusinessException e) {log.error(e.getErrorMsg(), e);return AjaxResult.defineError(e); } /** * 处理其它异常 */ @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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