rest项目的基础返回类设计

package com.hmy.erp.api.vo;

import java.io.Serializable;

import lombok.Data;

/**
 * erp基本状态返回类
 * 
 * @author WanHongLei
 * 2019年4月12日
 */
@Data
public class ErpBaseResult implements Serializable{
    private static final long serialVersionUID = -5669856511733166376L;
    
    public static final int SUCCESSCODE = 200;
    public static final int FAILEDCODE = 999;
    

    /**
     * 200 success
     * 999 failed
     */
    private Integer errCode;
    
    private String errMsg;
    
    private Object data;
    
    public static final ErpBaseResult SUCCESS = successWithData(null);
    
    public static final ErpBaseResult FAILED = failedWithData(null);

    
    public ErpBaseResult(){
        this.errCode = 200;
        this.errMsg = "SUCCESS";
    }
    
    public ErpBaseResult(Integer errCode, String errMsg){
        this.errCode = errCode;
        this.errMsg = errMsg;
    }
    
    public ErpBaseResult(Integer errCode, String errMsg, Object obj){
        this.errCode = errCode;
        this.errMsg = errMsg;
        this.data = obj;
    }
    
    public static ErpBaseResult successWithData(Object obj){
        return new ErpBaseResult(200,"SUCCESS", obj);
    }
    
    public static ErpBaseResult failedWithData(Object obj){
        return new ErpBaseResult(999,"FAILED", obj);
    }
    
    public static ErpBaseResult failedWithMsg(String errMsg){
        return new ErpBaseResult(999,errMsg);
    }

}