工具类

Springboot常用

Result

import java.io.Serializable;  
  
/**  
 * 通用 API 响应封装类  
 * @param <T> 返回数据类型  
 */  
public class Result<T> implements Serializable {  
    private static final long serialVersionUID = 1L;  
  
    /** 状态码 */  
    private int code;  
  
    /** 提示信息 */  
    private String msg;  
  
    /** 返回数据 */  
    private T data;  
  
    // ======================== 构造方法 ========================  
    public Result() {}  
  
    public Result(int code, String msg) {  
        this.code = code;  
        this.msg = msg;  
    }  
    public Result(int code, String msg, T data) {  
        this(code, msg);  
        this.data = data;  
    }  
    // ======================== 快捷静态方法 ========================  
    public static <T> Result<T> ok() {  
        return new Result<>(200, "成功");  
    }  
    public static <T> Result<T> ok(T data) {  
        return new Result<>(200, "成功", data);  
    }  
    public static <T> Result<T> ok(String msg, T data) {  
        return new Result<>(200, msg, data);  
    }  
    public static <T> Result<T> error() {  
        return new Result<>(500, "服务器内部错误");  
    }  
    public static <T> Result<T> error(String msg) {  
        return new Result<>(500, msg);  
    }  
    public static <T> Result<T> error(int code, String msg) {  
        return new Result<>(code, msg);  
    }  
    // ======================== 链式调用支持 ========================  
    public Result<T> setCode(int code) {  
        this.code = code;  
        return this;  
    }  
    public Result<T> setMsg(String msg) {  
        this.msg = msg;  
        return this;  
    }  
    public Result<T> setData(T data) {  
        this.data = data;  
        return this;  
    }  
    // ======================== Getter / Setter ========================  
  
    public int getCode() {  
        return code;  
    }  
    public String getMsg() {  
        return msg;  
    }  
    public T getData() {  
        return data;  
	}
}