using System;using System.Collections.Generic;using System.Linq;using System.Text;using YTO.WeiXin.Model;using YTO.Framework.Core;using Newtonsoft.Json.Linq;using Newtonsoft.Json;namespace WeiXin.Core{    public class OAuth20    {        public static string OAuth(string code)        {            string AppID = JobBase.GetConfParamValue(ParamEnum.AppID).ToString();            string AppSecret = JobBase.GetConfParamValue(ParamEnum.AppSecret).ToString();            string url = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code", AppID, AppSecret, code);            string Jsonstr = RequestHelper.SendGet(url);            JObject obj = JObject.Parse(Jsonstr);            string openId = obj["openid"].ToString().Replace("\"",string.Empty);            return openId;        }    }}