前后端统一结果集封装

@GetMapping("login")
public void loginResult() {
    Result result = new Result();
    result.setCode(200);
    result.setMsg("登录成功");
    result.setData("user",user);
}

@GetMapping("logout")
public void logoutResult() {
    Result result = new Result();
    result.setCode(200);
    result.setMsg("注销成功");
    result.setData(null);
}

public class Result<T> {
    /**
     * 状态码
     */
    public int code;
    /**
     * 提示信息
     */
    private String msg;
    /**
     * 返回的数据
     */
    private T data;
    
    public Result<T> setCode(RetCode retCode) {
        this.code = retCode.code;
        return this;
    }
    public int getCode() {
        return code;
    }
    public Result<T> setCode(int code) {
        this.code = code;
        return this;
    }
    public String getMsg() {
        return msg;
    }
    public Result<T> setMsg(String msg) {
        this.msg = msg;
        return this;
    }
    public T getData() {
        return data;
    }
    public Result<T> setData(T data) {
        this.data = data;
        return this;
    }
}

public enum RetCode {
    //请求成功
    SUCCESS(200),
    //请求失败
    FAIL(400),
    //未认证（签名错误）
    UNAUTHORIZED(401),
    //资源拒绝访问
    FORBIDDEN(403),
    //接口不存在
    NOT_FOUND(404),
    //服务器内部错误
    INTERNAL_SERVER_ERROR(500);
    public int code;
    RetCode(int code) {
        this.code = code;
    }
}

public class ResponseUtils {
    private final static String SUCCESS = "操作成功";
    private final static String FAIL = "操作失败";
    public static <T> Result<T> makeSuccessResponse() {
        return new Result<T>().setCode(RetCode.SUCCESS).setMsg(SUCCESS);
    }
    public static <T> Result<T> makeSuccessResponse(T data) {
        return new Result<T>().setCode(RetCode.SUCCESS).setMsg(SUCCESS).setData(data);
    }
    public static <T> Result<T> makeSuccessResponse(String msg, T data) {
        return new Result<T>().setCode(RetCode.SUCCESS).setMsg(msg).setData(data);
    }
    public static <T> Result<T> makeErrorResponse() {
        return new Result<T>().setCode(RetCode.FAIL).setMsg(FAIL);
    }
    public static <T> Result<T> makeErrorResponse(String msg) {
        return new Result<T>().setCode(RetCode.FAIL).setMsg(msg);
    }
    public static <T> Result<T> makeErrorResponse(int code, String msg) {
        return new Result<T>().setCode(code).setMsg(msg);
    }
    public static <T> Result<T> makeResponse(int code, String msg) {
        return new Result<T>().setCode(code).setMsg(msg);
    }
    public static <T> Result<T> makeResponse(int code, String msg, T data) {
        return new Result<T>().setCode(code).setMsg(msg).setData(data);
    }
}

{
  "code": 200,
  "data":
  {
    "id": 1,
    "username": "admin",
    "password": "2f6495613c5217c6c5f46439fc57cff2",
    "realname": "管理员"
  },
  "msg": "登录成功"
}