ErrorResult

作为 responseEntity 的body部分 有errorCode也有errMsg, 总的来说很方便

package com.tanhua.model.vo;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class ErrorResult {

    private String errCode;
    private String errMessage;

    public static ErrorResult error() {
        return ErrorResult.builder().errCode("999999").errMessage("系统异常稍后再试").build();
    }

    public static ErrorResult fail() {
        return ErrorResult.builder().errCode("000001").errMessage("发送验证码失败").build();
    }

    public static ErrorResult loginError() {
        return ErrorResult.builder().errCode("000002").errMessage("验证码失效").build();
    }

    public static ErrorResult faceError() {
        return ErrorResult.builder().errCode("000003").errMessage("图片非人像，请重新上传!").build();
    }

    public static ErrorResult mobileError() {
        return ErrorResult.builder().errCode("000004").errMessage("手机号已注册").build();
    }

    public static ErrorResult tokenError() {
        return ErrorResult.builder().errCode("000099").errMessage("token无效").build();
    }

}

自定义异常

把 errorResult 作为必须填入的元素 这样能方便的把错误信息提取出来

package com.tanhua.server.exception;

import com.easemob.im.server.api.block.group.msg.BlockUserSendMsgToGroup;
import com.tanhua.model.vo.ErrorResult;
import lombok.Data;

/**
 * 自定义异常
 */
@Data
public class BusinessException extends RuntimeException{

    private ErrorResult errorResult;

    public BusinessException(ErrorResult errorResult) {
        super(errorResult.getErrMessage());
        this.errorResult = errorResult;
    }
}

全局异常处理

检测到异常直接响应错误信息
@ControllerAdvice 在类上配
@ExceptionHandler(Exception.class) 在方法上配

package com.tanhua.server.exception;

import com.tanhua.model.vo.ErrorResult;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.View;

@ControllerAdvice
public class ExceptionAdvice {

    private final View error;

    public ExceptionAdvice(View error) {
        this.error = error;
    }

    /**
     * 全局处理BusinessException.class
     * 捕获到异常就直接返回响应
     * @param businessException
     * @return
     */
    @ExceptionHandler(BusinessException.class)
    public ResponseEntity handlerException(BusinessException businessException) {
        businessException.printStackTrace();//打印堆栈信息
        ErrorResult errorResult = businessException.getErrorResult();
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorResult);
    }

    @ExceptionHandler(Exception.class)
    public ResponseEntity handlerOther(Exception exception) {
        exception.printStackTrace();//打印堆栈信息
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(ErrorResult.error());
    }


}