SpringMVC返回结果封装

/**
 * Created by wolf on 2017/9/16.
 */
public class  Res
 
   {

    private int code = 0;
    private T data;
    private String msg = "";
    private String error = "";

    public static Res ok = new Res();
    public static Res fail = new Res().code(-1);

    public static Res build() {
        return new Res();
    }

    public static 
  
    Res build(T data){ return new Res().data(data); } public Res code(int code) { this.code = code; return this; } public Res data(T data) { this.data = data; return this; } public Res msg(String msg) { this.msg = msg; return this; } public Res error(String error) { this.error = error; return this; } //省略getter }