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WinForm微信扫码登录
小程序：扫一扫查出行【扫一扫了解最新限行尾号】
复制小程序
源码还需优化，不喜勿喷。
微信官方文档 : https://developers.weixin.qq.com/doc/oplatform/Website_App/WeChat_Login/Wechat_Login.html
前期准备：
1.微信开放平台开发者资质认证 https://open.weixin.qq.com/ 费用300 大概1-2天时间
2.创建网站应用，需要已备案域名、logo等资料 大概1-2天
3.通过以后获取AppID、AppSecret
winform 窗体 控件 ： webBrowser（加载微信接口,样式太难调了，设置隐藏即可，用pictureBox盖住就好） 、pictureBox（zhexiubu 加载二维码图片）
回调函数需格式化一下urlencode，微信要求的 地址： http://www.jsons.cn/urlencode/
以下是源码：
//Form窗体加载
private void LoginForm_Load(object sender, EventArgs e)
{
webBrowser1.Navigate("https://open.weixin.qq.com/connect/qrconnect?appid=微信开放平台申请的appid&redirect_uri=授权回调域&response_type=code&scope=snsapi_login&state=200"); }
//Form窗体
ArrayList addressList = new ArrayList();
string url = "";
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
if (url != "")
{
string tempCode = ""; if (addressList.Count == )
{
foreach (HtmlElement he in webBrowser1.Document.GetElementsByTagName("img"))
{
string str = he.GetAttribute("className");
if (str == "qrcode lightBorder")
{
pictureBox1.ImageLocation = he.GetAttribute("src"); //获取微信生成的二维码图片,那个网页中只有两个图片,且二维码是第二张图片. }
}
return;
}
else if (addressList.Count > )
{
tempCode = addressList[].ToString();
addressList = new ArrayList();
} //微信最终获得的code
string code = "";
if (tempCode.Contains("code"))
{
int iStart = tempCode.IndexOf("=");
int iEnd = tempCode.IndexOf('&', iStart);
if (iEnd < )
{
iEnd = tempCode.Length - iStart;
}
else
{
iEnd -= iStart;
}
code = tempCode.Substring(iStart + , iEnd - );
}
else
{
return;
} if (string.IsNullOrEmpty(code))
return;
OAuth_Token token = new OAuth_Token();
OAuth_Token Model = token.Get_token(code); //获取access_token
OAuthUser OAuthUser_Model = token.Get_UserInfo(Model.access_token, Model.openid);//获取用户信息 if (OAuthUser_Model.openid != null)
{
//通过openID 查询用户表 新增 修改 （openID是用户微信唯一ID 可做关联）
Dao dao = new Dao();
string res = dao.AddWeChatUser(OAuthUser_Model);
if (res == "")
{
//跳转主页
}
else if (res == "")
{
//跳转注册页面完善信息
}
}
}
}
//Form窗体
private void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
{
url = e.Url.ToString();
//微信每次跳转的页面放到list中，第一个是包含code的网址
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 BYYJ.RevitTool
{
public class OAuth_Token
{
public OAuth_Token()
{ //
//TODO: 在此处添加构造函数逻辑
//
}
//access_token 网页授权接口调用凭证,注意：此access_token与基础支持的access_token不同
//expires_in access_token接口调用凭证超时时间，单位（秒）
//refresh_token 用户刷新access_token
//openid 用户唯一标识，请注意，在未关注公众号时，用户访问公众号的网页，也会产生一个用户和公众号唯一的OpenID
//scope 用户授权的作用域，使用逗号（,）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"))
{
//可能发生错误
}
return returnText;
}
/// <summary>
/// json转实体
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="szJson"></param>
/// <returns></returns>
public OAuth_Token Get_token(string Code)
{
string appid = "申请的appid";
string appsecret = "申请的appsecret";
//获取微信回传的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");
//微信回传的数据为Json格式，将Json格式转化成对象
OAuth_Token Oauth_Token_Model = JsonHelper.ParseFromJson<OAuth_Token>(Str);
return Oauth_Token_Model;
}
/// <summary>
/// 通过access_token和openid获取用户信息
/// </summary>
/// <returns></returns>
public OAuthUser Get_UserInfo(string access_token, string openid)
{
//获取微信回传的openid、access token
string Str = GetJson("https://api.weixin.qq.com/sns/userinfo?access_token=" + access_token + "&openid=" + openid + "&lang=zh_CN");
//微信回传的数据为Json格式，将Json格式转化成对象
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>
/// 微信用户信息类
/// </summary>
public class OAuthUser
{
public OAuthUser()
{ }
#region 数据库字段
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 字段属性
/// <summary>
/// 用户的唯一标识
/// </summary>
public string openid
{
set { _openID = value; }
get { return _openID; }
}
/// <summary>
///
/// </summary>
public string SearchText
{
set { _searchText = value; }
get { return _searchText; }
}
/// <summary>
/// 用户昵称
/// </summary>
public string nickname
{
set { _nickname = value; }
get { return _nickname; }
}
/// <summary>
/// 用户的性别，值为1时是男性，值为2时是女性，值为0时是未知
/// </summary>
public string sex
{
set { _sex = value; }
get { return _sex; }
}
/// <summary>
/// 用户个人资料填写的省份
/// </summary>
public string province
{
set { _province = value; }
get { return _province; }
}
/// <summary>
/// 普通用户个人资料填写的城市
/// </summary>
public string city
{
set { _city = value; }
get { return _city; }
}
/// <summary>
/// 国家，如中国为CN
/// </summary>
public string country
{
set { _country = value; }
get { return _country; }
}
/// <summary>
/// 用户头像，最后一个数值代表正方形头像大小（有0、46、64、96、132数值可选，0代表640*640正方形头像），用户没有头像时该项为空
/// </summary>
public string headimgurl
{
set { _headimgUrl = value; }
get { return _headimgUrl; }
}
/// <summary>
/// 用户特权信息，json 数组，如微信沃卡用户为（chinaunicom）其实这个格式称不上JSON，只是个单纯数组
/// </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
}
}
