WinForm微信掃碼登錄_ZenDei技術網路在線

源碼還需優化，不喜勿噴。微信官方文檔 : https://developers.weixin.qq.com/doc/oplatform/Website_App/WeChat_Login/Wechat_Login.html 前期準備： 1.微信開放平臺開發者資質認證 https://open.wei ...

源碼還需優化，不喜勿噴。

微信官方文檔 : https://developers.weixin.qq.com/doc/oplatform/Website_App/WeChat_Login/Wechat_Login.html

前期準備：

1.微信開放平臺開發者資質認證 https://open.weixin.qq.com/ 費用300 大概1-2天時間

2.創建網站應用，需要已備案功能變數名稱、logo等資料大概1-2天

3.通過以後獲取AppID、AppSecret

winform 窗體控制項： webBrowser（載入微信介面,樣式太難調了，設置隱藏即可，用pictureBox蓋住就好）、pictureBox（zhexiubu 載入二維碼圖片）

回調函數需格式化一下urlencode，微信要求的地址： http://www.jsons.cn/urlencode/

以下是源碼：

//Form窗體載入
private void LoginForm_Load(object sender, EventArgs e)
{
webBrowser1.Navigate("https://open.weixin.qq.com/connect/qrconnect?appid=微信開放平臺申請的appid&redirect_uri=授權回調域&response_type=code&scope=snsapi_login&state=200");

}

//Form窗體

ArrayList addressList = new ArrayList();
        string url = "";
        private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            if (url != "")
            {
                string tempCode = "";

                if (addressList.Count == 1)
                {
                    foreach (HtmlElement he in webBrowser1.Document.GetElementsByTagName("img"))
                    {
                        string str = he.GetAttribute("className");
                        if (str == "qrcode lightBorder")
                        {
                            pictureBox1.ImageLocation = he.GetAttribute("src"); //獲取微信生成的二維碼圖片,那個網頁中只有兩個圖片,且二維碼是第二張圖片.

                        }
                    }
                    return;
                }
                else if (addressList.Count > 1)
                {
                    tempCode = addressList[1].ToString();
                    addressList = new ArrayList();
                }

                //微信最終獲得的code
                string code = "";
                if (tempCode.Contains("code"))
                {
                    int iStart = tempCode.IndexOf("=");
                    int iEnd = tempCode.IndexOf('&', iStart);
                    if (iEnd < 0)
                    {
                        iEnd = tempCode.Length - iStart;
                    }
                    else
                    {
                        iEnd -= iStart;
                    }
                    code = tempCode.Substring(iStart + 1, iEnd - 1);
                }
                else
                {
                    return;
                }


                if (string.IsNullOrEmpty(code))
                    return;
                OAuth_Token token = new OAuth_Token();
                OAuth_Token Model = token.Get_token(code);  //獲取access_token
                OAuthUser OAuthUser_Model = token.Get_UserInfo(Model.access_token, Model.openid);//獲取用戶信息    

                if (OAuthUser_Model.openid != null)
                {
　　　　　　　　　　　　//通過openID 查詢用戶表 新增 修改 （openID是用戶微信唯一ID 可做關聯）
                    Dao dao = new Dao();
                    string res = dao.AddWeChatUser(OAuthUser_Model);
                    if (res == "1")
                    {
                        //跳轉主頁
                    }
                    else if (res == "2")
                    {
                       //跳轉註冊頁面完善信息
                    }
                }
            }
        }

//Form窗體

private void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
        {
            url = e.Url.ToString();
            //微信每次跳轉的頁面放到list中，第一個是包含code的網址
            addressList.Add(url);
        }

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Threading.Tasks;

namespace XXXX
{
    public class JsonHelper
    {
        public static T ParseFromJson<T>(string szJson)
        {
            T obj = Activator.CreateInstance<T>();
            using (MemoryStream ms =
            new MemoryStream(Encoding.UTF8.GetBytes(szJson)))
            {
                DataContractJsonSerializer serializer =
                new DataContractJsonSerializer(obj.GetType());
                return (T)serializer.ReadObject(ms);
            }
        }
    }
}

using System.Net;
using System.Text;

namespace XXXXX
{
    public class OAuth_Token
    {
        public OAuth_Token()
        {

            //
            //TODO: 在此處添加構造函數邏輯
            //
        }
        //access_token    網頁授權介面調用憑證,註意：此access_token與基礎支持的access_token不同
        //expires_in    access_token介面調用憑證超時時間，單位（秒）
        //refresh_token    用戶刷新access_token
        //openid    用戶唯一標識，請註意，在未關註公眾號時，用戶訪問公眾號的網頁，也會產生一個用戶和公眾號唯一的OpenID
        //scope    用戶授權的作用域，使用逗號（,）分隔
        public string _access_token;
        public string _expires_in;
        public string _refresh_token;
        public string _openid;
        public string _scope;
        public string access_token
        {
            set { _access_token = value; }
            get { return _access_token; }
        }
        public string expires_in
        {
            set { _expires_in = value; }
            get { return _expires_in; }
        }

        public string refresh_token
        {
            set { _refresh_token = value; }
            get { return _refresh_token; }
        }
        public string openid
        {
            set { _openid = value; }
            get { return _openid; }
        }
        public string scope
        {
            set { _scope = value; }
            get { return _scope; }
        }
        /// <summary>  
        /// 生成Json格式  
        /// </summary>  
        /// <typeparam name="T"></typeparam>  
        /// <param name="obj"></param>  
        /// <returns></returns>  
        public string GetJson(string url)
        {
            WebClient wc = new WebClient();
            wc.Credentials = CredentialCache.DefaultCredentials;
            wc.Encoding = Encoding.UTF8;
            string returnText = wc.DownloadString(url);

            if (returnText.Contains("errcode"))
            {
                //可能發生錯誤
            }
            return returnText;
        }
        /// <summary>  
        /// json轉實體  
        /// </summary>  
        /// <typeparam name="T"></typeparam>  
        /// <param name="szJson"></param>  
        /// <returns></returns>  
        public OAuth_Token Get_token(string Code)
        {
            string appid = "申請的appid";
            string appsecret = "申請的appsecret";
            //獲取微信回傳的openid、access token
            string Str = GetJson("https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appid + "&secret=" + appsecret + "&code=" + Code + "&grant_type=authorization_code");
            //微信回傳的數據為Json格式，將Json格式轉化成對象
            OAuth_Token Oauth_Token_Model = JsonHelper.ParseFromJson<OAuth_Token>(Str);
            return Oauth_Token_Model;
        }
        /// <summary>  
        /// 通過access_token和openid獲取用戶信息  
        /// </summary>  
        /// <returns></returns>  
        public OAuthUser Get_UserInfo(string access_token, string openid)
        {
            //獲取微信回傳的openid、access token
            string Str = GetJson("https://api.weixin.qq.com/sns/userinfo?access_token=" + access_token + "&openid=" + openid + "&lang=zh_CN");
            //微信回傳的數據為Json格式，將Json格式轉化成對象
            OAuthUser userinfo = JsonHelper.ParseFromJson<OAuthUser>(Str);
            return userinfo;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace XXXXX
{
    /// <summary>
    /// 微信用戶信息類
    /// </summary>
    public class OAuthUser
    {
        public OAuthUser()
        { }
        #region 資料庫欄位
        private string _openID;
        private string _searchText;
        private string _nickname;
        private string _sex;
        private string _province;
        private string _city;
        private string _country;
        private string _headimgUrl;
        private string _privilege;
        private string _unionid;
        private DateTime _CreateDateTime;

        #endregion

        #region 欄位屬性
        /// <summary>
        /// 用戶的唯一標識
        /// </summary>
        public string openid
        {
            set { _openID = value; }
            get { return _openID; }
        }
        /// <summary>
        /// 
        /// </summary>
        public string SearchText
        {
            set { _searchText = value; }
            get { return _searchText; }
        }
        /// <summary>
        /// 用戶昵稱 
        /// </summary>
        public string nickname
        {
            set { _nickname = value; }
            get { return _nickname; }
        }
        /// <summary>
        /// 用戶的性別，值為1時是男性，值為2時是女性，值為0時是未知 
        /// </summary>
        public string sex
        {
            set { _sex = value; }
            get { return _sex; }
        }
        /// <summary>
        /// 用戶個人資料填寫的省份
        /// </summary>
        public string province
        {
            set { _province = value; }
            get { return _province; }
        }
        /// <summary>
        /// 普通用戶個人資料填寫的城市 
        /// </summary>
        public string city
        {
            set { _city = value; }
            get { return _city; }
        }
        /// <summary>
        /// 國家，如中國為CN 
        /// </summary>
        public string country
        {
            set { _country = value; }
            get { return _country; }
        }
        /// <summary>
        /// 用戶頭像，最後一個數值代表正方形頭像大小（有0、46、64、96、132數值可選，0代表640*640正方形頭像），用戶沒有頭像時該項為空
        /// </summary>
        public string headimgurl
        {
            set { _headimgUrl = value; }
            get { return _headimgUrl; }
        }
        /// <summary>
        /// 用戶特權信息，json 數組，如微信沃卡用戶為（chinaunicom）其實這個格式稱不上JSON，只是個單純數組
        /// </summary>
        public string privilege
        {
            set { _privilege = value; }
            get { return _privilege; }
        }
        public string unionid
        {
            set { _unionid = value; }
            get { return _unionid; }
        }
        public DateTime CreateDateTime
        {
            set { _CreateDateTime = value; }
            get { return _CreateDateTime; }
        }
        #endregion
    }
}