[Java知识库]java通用返回结果集（适用于前后端分离数据交互）

封装类

package com.chen.utils;

import java.util.HashMap;
import java.util.Map;

/**
 * 封装统一返回实体类
 * 继承HashMap 可随时put自定义key-value
 */
public class Rs extends HashMap<String,Object> {
    public static Integer code ;

    public static String msg;

    public static Map data=new HashMap();

    public Rs() {
        super.put("code",this.code);
        super.put("msg",this.msg);
        super.put("data",this.data);
    }
    public Rs(Integer code,String msg){
        this.code=code;
        this.msg=msg;
        super.put("code",code);
        super.put("msg",msg);
    }
    @Override
    public Rs put(String key, Object value) {
        this.data.put(key,value);
        return new Rs();
    }
    public static Rs OK(){
        return new Rs(200,"成功");
    }
    public static Rs OK(String msg){
        return new Rs(200,msg);
    }
    public static Rs error(){
        return new Rs(500,"请求失败");
    }
    public static Rs error(String msg){
        return new Rs(500,msg);
    }

}

封装类的使用

  @PostMapping("/login")
    public Rs login1(@RequestBody User user) {
        return Rs.OK("你好呀").put("token",user).put("ss","我是中XX");
    }

返回结果

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