基于SignalR的消息推送与二维码扫描登录实现代码

using Microsoft.AspNet.SignalR;namespace TxSms.SingalR
{
public static class Notifier 
{ 
private static readonly IHubContext Context = GlobalHost.ConnectionManager.GetHubContext<QRCodeHub>(); 
public static void SessionTimeOut(string connectionId, int time) 
{ 
Context.Clients.Client(connectionId).alertClient(time); 
} 
public static void SendElapsedTime(string connectionId, int time) 
{
Context.Clients.Client(connectionId).sendElapsedTime(time); 
} 
public static void SendQRCodeUUID(string connectionId, string uuid)
{ Context.Clients.Client(connectionId).sendQRCodeUUID(uuid);
} 
}
}

using Microsoft.AspNet.SignalR;
using System.Threading.Tasks;
namespace TxSms.SingalR
{ 
/// <summary> 
/// 二维码推送
/// 
</summary> 
//[HubName("qrcode")] public class QRCodeHub : Hub {
/// <summary> /// 给客户端发送时间间隔 /// 
</summary> /// <param name="time">
</param>
public void SendTimeOutNotice(int time) 
{
Clients.Client(Context.ConnectionId).alertClient(time);
}
public void CheckElapsedTime(int time) 
{
Clients.Client(Context.ConnectionId).sendElapsedTime(time); } 
/// <summary> 
/// 发送二维码UUID内容
///
</summary>
/// <param name="uuid">
</param> 
public void SendQRCodeUUID(string uuid) 
{ 
Clients.Client(Context.ConnectionId).sendQRCodeUUID(uuid); }
///
<summary>
/// Called when the connection connects to this hub instance.
/// </summary> ///
<returns>A <see cref="T:System.Threading.Tasks.Task" />
</returns> public override Task OnConnected() 
{
SessionTimer.StartTimer(Context.ConnectionId); return base.OnConnected();
}
/// <summary> 
/// Called when a connection disconnects from this hub gracefully or due to a timeout. 
///
</summary> 
/// 
<param name="stopCalled">
/// true, if stop was called on the client closing the connection gracefully;
/// false, if the connection has been lost for longer than the /// <see cref="P:Microsoft.AspNet.SignalR.Configuration.IConfigurationManager.DisconnectTimeout" />. 
/// Timeouts can be caused by clients reconnecting to another SignalR server in scaleout. /// </param> /// <returns>A <see cref="T:System.Threading.Tasks.Task" />
</returns> public override Task OnDisconnected(bool stopCalled) { SessionTimer.StopTimer(Context.ConnectionId); return base.OnDisconnected(stopCalled);
} 
/// <summary> /// 
Called when the connection reconnects to this hub instance. /// </summary> ///
<returns>A <see cref="T:System.Threading.Tasks.Task" />
</returns> public override Task OnReconnected()
{
if (!SessionTimer.Timers.ContainsKey(Context.ConnectionId)) 
{ 
SessionTimer.StartTimer(Context.ConnectionId);
} 
return base.OnReconnected(); }
///
<summary> /// 重置时钟 /// 
</summary> public void ResetTimer() 
{ SessionTimer timer;
if (SessionTimer.Timers.TryGetValue(Context.ConnectionId, out timer))
{ timer.ResetTimer(); 
} 
else
{
SessionTimer.StartTimer(Context.ConnectionId);
}
} /// 
<summary> /// 
发送普通消息 /// 
</summary> ///
<param name="name">
</param> /// <param name="message">
</param>
public void Send(string name, string message) 
{ 
Clients.All.addNewMessageToPage(name, message); 
} 
}
}

using System;using System.Collections.Concurrent;using System.Timers;namespace TxSms.SingalR{ public class SessionTimer : IDisposable 
{ 
///
<summary> /// 存储客户端对应的Timer /// 
</summary> 
public static readonly ConcurrentDictionary<string, SessionTimer> Timers; private readonly Timer _timer; static SessionTimer() 
{ Timers = new ConcurrentDictionary<string, SessionTimer>(); 
}
/// <summary> /// 构造函数 /// </summary> /// 
<param name="connectionId"></param> private SessionTimer(string connectionId)
{
ConnectionId = connectionId; _timer = new Timer { Interval = Utility.ActivityTimerInterval() }; _timer.Elapsed += (s, e) => MonitorElapsedTime(); _timer.Start(); 
}
public int TimeCount { get; set; } /// <summary> /// 客户端连接Id ///
</summary> public string ConnectionId { get; set; } /// <summary> /// 启动Timer /// 
</summary> ///
<param name="connectionId">
</param>
public static void StartTimer(string connectionId) 
{ 
var newTimer = new SessionTimer(connectionId);
if (!Timers.TryAdd(connectionId, newTimer)) 
{ newTimer.Dispose();
}
} 
/// <summary>
/// 停止Timer /// </summary> ///
<param name="connectionId">
</param> public static void StopTimer(string connectionId) 
{
SessionTimer oldTimer; 
if (Timers.TryRemove(connectionId, out oldTimer))
{ 
oldTimer.Dispose();
} 
} 
/// <summary> /// 
重置Timer /// 
</summary> public void ResetTimer() { TimeCount = 0; _timer.Stop();
_timer.Start(); 
} 
public void Dispose()
{ 
// Stop might not be necessary since we call Dispose _timer.Stop(); _timer.Dispose(); 
} ///

<summary> ///
给客户端发送消息 /// 
</summary> private void MonitorElapsedTime() 
{ Utility.ClearExpiredUUID(); var uuid = Utility.GetUUID(ConnectionId); 
//if (TimeCount >= Utility.TimerValue()) 
//{ // StopTimer(ConnectionId);
// Notifier.SendQRCodeUUID(ConnectionId, uuid); // Notifier.SessionTimeOut(ConnectionId, TimeCount); 
//} 
//else //
{ Notifier.SendQRCodeUUID(ConnectionId, uuid);
Notifier.SendElapsedTime(ConnectionId, TimeCount); 
//}
TimeCount++;
if (TimeCount > 1000) 
{ 
TimeCount = 0;
} } }}

using TxSms.Actions;namespace TxSms.SingalR
{
internal class Utility { public static int IntNum = 0; /// 
<summary> /// 时间间隔 /// 
</summary> ///
<returns></returns> 
public static int TimerValue() 
{ return 1000;
} 
public static double ActivityTimerInterval()
{ return 1000.0;
}
/// <summary> /// 获取当前UUID
/// </summary>
/// <returns></returns> public static string GetUUID(string connectionId)
{
try 
{ 
var model = new QRCodeAction().GetValidModel(connectionId); 
return model.ToJson(connectionId); 
} 
catch 
{ return "ERROR"; 
} } /// <summary> /// 删除过期UUID /// 
</summary> public static void ClearExpiredUUID() { IntNum++; 
if (IntNum <= 1000) return; 
new QRCodeAction().ClearExpiredUUID();
IntNum = 0; } }}

using Microsoft.Owin;using Owin;
[assembly: OwinStartup(typeof(TxSms.Web.Startup))]namespace TxSms.Web{ public partial class Startup 
{ 
public void Configuration(IAppBuilder app) 
{ //启动SignalR app.MapSignalR(); ConfigureAuth(app); 
} }}

<script type="text/javascript" src="~/Scripts/jquery.signalR-2.2.1.min.js">
</script> 
<script type="text/javascript" src="~/signalr/hubs">
</script

 var codeUUID = "";
 $(function () {
 // Reference the auto-generated proxy for the hub. var qrcode = $.connection.qRCodeHub;
 // Create a function that the hub can call back to display messages. qrcode.client.addNewMessageToPage = function (name, message)
 { // Add the message to the page. console.log(message); //jQuery('#divQRCode').qrcode({ width: 180, height: 180, correctLevel: 0, text: message }); 
 }; 
 qrcode.client.sendElapsedTime = function (time) { console.log(time); 
 }; 
 qrcode.client.sendQRCodeUUID = function (uuid) { console.log("sendQRCodeUUID");
 console.log(codeUUID); if (codeUUID === uuid) { return; } codeUUID = uuid; if (codeUUID !== "ERROR") { var jsonUUID = $.parseJSON(codeUUID);
 if (jsonUUID.islogin === 1) { //判断是否登录 window.location.href = "/Home/Index/@Model.Name"; } } $("#divQRCode").html("");
 $('#divQRCode').qrcode({ width: 180, height: 180, correctLevel: 0, text: codeUUID });
 };
 // Start the connection. $.connection.hub.start().done(function () { //qrcode.server.updateConnectionId($.connection.hub.id); qrcode.server.send("qrcode", Math.random());
 });
 });

<script type="text/javascript" src="~/Scripts/qrcode.min.js">
</script> 
<script type="text/javascript" src="~/Scripts/jquery.qrcode.min.js">
</script>

 <!--二维码登录开始--> 
<div> 
<div>安全登录 防止被盗</div>
 <div>
</div> 
<div>扫一扫登录</div> 
</div> 
<!--二维码登录结束-->

$("#divQRCode").html(""); 
$('#divQRCode').qrcode({ width: 180, height: 180, correctLevel: 0, text: codeUUID });

{"connectionid":"19c12e95-26d7-410c-8292-2a3afdd1a4da","uuid":"a04702df-6a52-4e1c-be8b-9b3dbeef4d72","islogin":0,"isvalid":1}

using Abp.Application.Services.Dto;using System;using System.ComponentModel.DataAnnotations;
namespace TxSms.Inputs{ /// <summary> /// 二维码登录认证 /// </summary> [Serializable]
public class QRCodeVerifyInput : IInputDto { /// <summary> /// 构造函数 /// </summary>
public QRCodeVerifyInput() { ConnectionId = Guid.Empty.ToString();
UUID = Guid.Empty; UserName = Password = ""; } /// <summary> /// 当前回话ID /// </summary> 
[DisplayFormat(ConvertEmptyStringToNull = false)] public string ConnectionId { get; set;
} /// <summary> /// 唯一标识符号 /// </summary> 
public Guid UUID { get; set; } /// <summary> /// 用户账号 /// </summary>
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string UserName { get; set; } /// <summary> /// 登录密码 /// </summary>
[DisplayFormat(ConvertEmptyStringToNull = false)] 
public string Password { get; set; } /// <summary> /// 平台 /// </summary>
[DisplayFormat(ConvertEmptyStringToNull = false)] 
public string Platform { get; set; 
} }}

using Abp.Application.Services.Dto;
using Newtonsoft.Json;using System.ComponentModel.DataAnnotations;using System.Web.Mvc;using TxSms.MVC;namespace TxSms.Outputs{ /// <summary> /// 输出基类 /// </summary> [ModelBinder(typeof(EmptyStringModelBinder))] public class TxSmsOutputDto : IOutputDto { /// <summary> /// 构造函数 /// 
</summary> public TxSmsOutputDto() 
{ Result = 0; //默认为0，表示初始值或正确 Message = ""; 
} /// <summary> /// 错误代码 ///
</summary> [JsonProperty("Result")] public int Result { get; set; } /// <summary> /// 错误信息 /// </summary>
[DisplayFormat(ConvertEmptyStringToNull = false)] [JsonProperty("Message")] 
public string Message { get; set; } }}

using System;using System.Threading.Tasks;using System.Web.Http;using TxSms.Actions;using TxSms.Inputs;using TxSms.Outputs;namespace TxSms{ /// <summary> /// 二维码接口 /// </summary> public class QRCodeController : TxSmsApiController { /// <summary> /// 二维码登录认证 /// </summary> /// <returns> /// 0:登录成功；-1:参数错误 -2:ConnectionId、UUID、UserName、Password不允许为空-3:ConnectionId回话id不存在-4:UUID输入错误-5:UUID已过期 /// -6:本UUID已登录-7:登录账号已停用-8:登录账号已删除-9:登录密码输入错误-10:登录账号不存在 /// </returns> [AllowAnonymous] [HttpPost] public async Task<TxSmsOutputDto> QRCodeVerify([FromBody]QRCodeVerifyInput model) { TxSmsOutputDto result = new TxSmsOutputDto(); #region 参数验证 if (model.IsNull()) { result.Result = -1; result.Message = "参数错误"; return result; } if (model.ConnectionId.IsNullOrEmpty() || model.UUID.Equals(Guid.Empty) || model.UserName.IsNullOrEmpty() || model.Password.IsNullOrEmpty()) { result.Result = -2; result.Message = "ConnectionId、UUID、UserName、Password不允许为空"; return result; } #endregion 参数验证 #region 有效性判断 //验证ConnectionId合法性 if (QRCodeAction.QRCodeLists.ContainsKey(model.ConnectionId)) { result.Result = -3; result.Message = "ConnectionId回话id不存在"; return result; } //验证UUID有效性 var findCode = QRCodeAction.QRCodeLists[model.ConnectionId]; if (!model.UUID.Equals(findCode.UUID)) { result.Result = -4; result.Message = "UUID输入错误"; return result; } if (!findCode.IsValid()) { result.Result = -5; result.Message = "UUID已过期"; return result; } if (findCode.IsLogin) { result.Result = -6; result.Message = "本UUID已登录"; return result; } #endregion 有效性判断 LoginUserNameInput loginParam = new LoginUserNameInput { UserName = model.UserName, Password = model.Password, Platform = model.Platform }; LoginOutput loginResult = await new SessionController().LoginUserName(loginParam); switch (loginResult.Result) { case -1: result.Result = -7; result.Message = "登录账号已停用"; break; case -2: result.Result = -8; result.Message = "登录账号已删除"; break; case -3: result.Result = -9; result.Message = "登录密码输入错误"; break; case -4: result.Result = -10; result.Message = "登录账号不存在"; break; } if (loginResult.Result > 0) //登录成功，值为AccId { result.Result = 0; findCode.IsLogin = true; //更改登录状态 result.Message = "成功登录"; } return result; } }}