统一返回数据格式工具类ResultEntity

在企业级应用开发中，为了返回统一的数据格式，需要一个工具类

package com.crowd.common.util;

import java.lang.reflect.Type;

public class ResultEntity<T> {

    private String result; //结果
    private String message;//失败信息
    private T data;// 返回数据

    private static final String SUCCESS="SUCCESS";
    private static final String FAILED="FAILED";

    public ResultEntity() {
    }

    public ResultEntity(String result, String message, T data) {
        this.result = result;
        this.message = message;
        this.data = data;
    }

    public String getResult() {
        return result;
    }

    public void setResult(String result) {
        this.result = result;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }

    /**
     * 成功不携带数据的统一格式 比如增删改
     * @param <Type>
     * @return
     */
    public static <Type> ResultEntity<Type> successWithoutData(){
        return new ResultEntity<Type>(SUCCESS,null,null);
    }

    /**
     * 成功携带数据的统一格式 比如查询
     * @param data
     * @param <Type>
     * @return
     */
    public static <Type> ResultEntity<Type> successWithData(Type data){
        return new ResultEntity<Type>(SUCCESS,null,data);
    }


    /**
     * 返回操作失败
     * @param message
     * @param <Type>
     * @return
     */
    public static <Type> ResultEntity<Type> failed(String message){
        return new ResultEntity<Type>(FAILED,message,null);
    }

    @Override
    public String toString() {
        return "ResultEntity{" +
                "result='" + result + '\'' +
                ", message='" + message + '\'' +
                ", data=" + data +
                '}';
    }
}