微信获取用户基本信息以及 json 解析

又重写了一遍，感觉收获挺大，记录一下

项目引用

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Web.Script.Serialization;

public  class GetMessage: IHttpHandler
    {
        string AppID = "";
        string Secret = "";
        string Url = "";
        string Code = "";
        HttpContext context = null;
        //传送  HttpContext 页面传  HttpContext.Current    
        public GetMessage(string Url, string AppID, string State,string Secret,HttpContext context)
        {
            ProcessRequest (context);
            this.AppID = AppID;
            this.Secret = Secret;
            string code = context.Request.QueryString["code"];
            if (string.IsNullOrEmpty(code))
            {
                this.Url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + AppID + "&redirect_uri=" + Url + "&response_type=code&scope=snsapi_userinfo&state=" + State + "#wechat_redirect";
                context.Response.Redirect(this.Url);
            }
            else {
                this.Code = code;
            }
        }






        public  void  Get()
        {
            var client = new System.Net.WebClient();
            client.Encoding = System.Text.Encoding.UTF8;

            this.Url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + this.AppID + "&secret=" + this.Secret + "&code=" + this.Code + "&grant_type=authorization_code";

            var data = client.DownloadString(Url);

            JObject jo = (JObject)JsonConvert.DeserializeObject(data.ToString());//这种方式只能单个获取值，如果JSON中不包含的话，还会报错
            var serializer = new JavaScriptSerializer();//这种方式则会很好的转化为 字典类型，如果JSON中不存在，则相应的值为 NULL
            try
            {
                string access_token = jo["access_token"].ToString();
                string openid = jo["openid"].ToString();


                var User = serializer.Deserialize<Dictionary<string, string>>(data);
                string openid1;
                if (!User.TryGetValue("openid", out openid1))
                { context.Response.Write("取名错误"); }//直接输出到页面上



                Url = string.Format("https://api.weixin.qq.com/sns/userinfo?access_token={0}&openid={1}&lang=zh_CN", access_token, openid);
                data = client.DownloadString(Url);


                
                User = serializer.Deserialize<Dictionary<string, string>>(data);

                var userInfo = serializer.Deserialize<Dictionary<string, object>>(data);
                foreach (var key in userInfo.Keys)
                {
                    context.Response.Write(string.Format("{0}: {1}", key, userInfo[key]) + "<br/>");
                }
            }
            catch {
                context.Response.Write(data);
            }
        }


        public void ProcessRequest(HttpContext context)
        {
            this.context = context;
        }
        public bool IsReusable
        {
            get { return true; }
        }
    }

摘自  麦舒    https://www.cnblogs.com/ansiboy/