using microsoft.aspnet.signalr;
using microsoft.aspnet.signalr.hubs;
using system;
using system.collections.generic;
using system.linq;
using system.web;
namespace wd.c.utility
{
 /// 

 /// 标注single javascription要连接的名称
 /// 
 [hubname("pushhub")]
 public class pushhub : hub
 {
 /// 

 /// 临时保存请求的用户
 /// 
 static dictionary rlist = new dictionary();
 
 /// 

 /// 登录请求的用户;打开login页执行本方法,用于记录浏览器连接的id
 /// 
 public void ruserconnected()
 {
 if (!rlist.containskey(context.connectionid))
 rlist.add(context.connectionid, string.empty);
 //client方式表示对指定id的浏览器发送getuserid方法,浏览器通过javascrip方法getuserid(string)得到后台发来的context.connectionid
 clients.client(context.connectionid).getuserid(context.connectionid);
 }
 /// 

 /// 实际登录的用户
 /// 
 /// 请求的用户id
 /// 微信openid
 public void loguserconnected(string ruser, string loguserid)
 {
 if (rlist.containskey(ruser))
 {
 rlist.remove(ruser);
 //client方式表示对指定id的浏览器发送getuserid方法,浏览器通过javascrip方法userloginsuccessful(bool,string)得到后台发来的登录成功，和微信openid
 clients.client(ruser).userloginsuccessful(true, loguserid);
 }
 }
 
 }
}

using system;
using system.collections.generic;
using system.linq;
using system.web;
using system.web.mvc;
namespace wd.c.controllers
{
 public class logincontroller : controller
 {
 //
 // get: /login/
 /// 

 /// 登录百家乐凯发k8主页,电脑端打开
 /// 
 /// 
 public actionresult index()
 {
 /*参考 https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140842&token=&lang=zh_cn
 *1.url用于生成二维码给微信扫描
 *2.格式参考微信公从平台帮助
 * https://open.weixin.qq.com/connect/oauth2/authorize?appid=appid&redirect_uri=redirect_uri&response_type=code&scope=scope&state=state#wechat_redirect 若提示“该链接无法访问”，请检查参数是否填写错误，是否拥有scope参数对应的授权作用域权限。 
 *3.redirect_uri内容为返回地址，需要开发者需要先到公众平台凯发网娱乐官网下载官网中的“开发 - 接口权限 - 网页服务 - 网页帐号 - 网页授权获取用户基本信息”的配置选项中，修改授权回调域名
 *4.redirect_uri应回调到wxlog页并进行urlencode编码,如: redirect_uri=geturlencode("http://你的网站/login/wxlog?ruser="); ruser为pushhub中的context.connectionid到view中配置 
 *
 */
 viewbag.url = string.format("https://open.weixin.qq.com/connect/oauth2/authorize?appid={0}&redirect_uri={1}&response_type=code&scope=snsapi_base&state={2}#wechat_redirect", b.helper.appid, geturlencode("http://你的网站/login/wxlog?ruser="), guid.newguid());
 return view();
 }
 /// 

 /// 登录确认页,微信端打开
 /// 
 /// 
 /// 
 public actionresult wxlog(string ruser)
 { 
//使用微信登录
if (!string.isnullorempty(code))
 {
 string loguser= b.helper.getopenidbycode(code);
 session["loguserid"] =loguser;
 viewbag.loguserid = loguser;
 }
 viewbag.ruser = ruser;
 return view();
 
 }
 
 }
}

using system;
using system.collections.generic;
using system.linq;
using system.web;
using system.web.mvc;
namespace wd.c.controllers
{
 public class qrcontroller : controller
 {
 //
 // get: /qr/
 public actionresult index()
 {
 return view();
 }
 /// 

 /// 获得2维码图片
 /// 
 /// 
 /// 
 public actionresult getqrcodeimg(string str)
 {
 using (var ms = new system.io.memorystream())
 {
 string stringtest = str;
 getqrcode(stringtest, ms);
 response.contenttype = "image/png";
 response.outputstream.write(ms.getbuffer(), 0, (int)ms.length);
 system.drawing.bitmap img = new system.drawing.bitmap(100, 100);
 img.save(ms, system.drawing.imaging.imageformat.jpeg);
 response.end();
 return file(ms.toarray(), @"image/jpeg");
 }
 }
 private static bool getqrcode(string strcontent, system.io.memorystream ms)
 {
 gma.qrcodenet.encoding.errorcorrectionlevel ecl = gma.qrcodenet.encoding.errorcorrectionlevel.m; //误差校正水平 
 string content = strcontent;//待编码内容
 gma.qrcodenet.encoding.windows.render.quietzonemodules quietzones = gma.qrcodenet.encoding.windows.render.quietzonemodules.two; //空白区域 
 int modulesize = 12;//大小
 var encoder = new gma.qrcodenet.encoding.qrencoder(ecl);
 gma.qrcodenet.encoding.qrcode qr;
 if (encoder.tryencode(content, out qr))//对内容进行编码，并保存生成的矩阵
 {
 var render = new gma.qrcodenet.encoding.windows.render.graphicsrenderer(new gma.qrcodenet.encoding.windows.render.fixedmodulesize(modulesize, quietzones));
 render.writetostream(qr.matrix, system.drawing.imaging.imageformat.png, ms);
 }
 else
 {
 return false;
 }
 return true;
 }
 }
}

chat.client.getuserid = function (ruserid)
{
　　//二维码生成的文本
$("#loga").attr("src", "@viewbag.url"   ruserid);
}

chat.client.userloginsuccessful = function (r, userid) {
 if (r) {
 $.post("/login/addsession/", { userid: userid }, function (r2) {
 if (r2) {
 location.;
 }
 })
 }
 }; 

/// 

 /// 保存微信确认登录后返回的openid，做为网站的session["loguserid"]
 /// 
 /// 
 /// 
 public jsonresult addsession(string userid)
 {
 session["loguserid"] = userid;
 return json(true);
 }

@{
 viewbag.title = "wxlog";
}
wxlog

@{
 viewbag.title = "index";
}
 @scripts.render("~/bundles/jquery")


 
 
.net c#使用微信公众号登录网站-百家乐凯发k8


请使用微信登录扫描以下二维码生产图片

 public static string getopenidbycode(string code)
 {
 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);
 using (system.net.webclient client = new system.net.webclient())
 {
 string tempstr= client.downloadstring( url);
 var regex= new regex(@"""openid"":""[^""] ?"",", regexoptions.ignorecase);
 string tempstr2= regex.match(tempstr).value;
 return tempstr2.substring(10, tempstr2.length - 12);
 }
 }