统一响应实现

Result.class

package com.example.demo99.pojo;

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

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Result {
    private int code;
    private String msg;
    private Object data;

    public static Result success(Object data){
        return new Result(1,"success",data);
    }
    public static Result success(){
        return new Result(1,"success",null);
    }
    public static Result error(String msg){
        return new Result(0,msg,null);
    }

    @Override
    public String toString() {
        return "Result{"+
                "code="+code+
                ",msg="+msg+'\''+
                ",data="+data+
                "}";
    }
}

controller

@RequestMapping("/result")
    @ResponseBody
    public Result hello1(){
        System.out.println("hello world");
        return Result.success("hello world");
    }

    @RequestMapping("/getAddr")
    @ResponseBody
    public Result getAddr(){
        User user=new User();
        user.setAddress("jinan");
        user.setAge(18);
        return Result.success(user);
    }

    @RequestMapping("/listUser")
    @ResponseBody
    public Result listUser(){
        List<User> list=new ArrayList<>();
        User user=new User();
        user.setName("张三");
        user.setAddress("jinan");
        user.setAge(18);

        User user2=new User("李四",19,"济南");
        list.add(user);
        list.add(user2);
        return Result.success(list);
    }

结果：