Signalr Uncaught TypeError：currentHub.server.OnConnected不是函数（...）

我使用signalr javascript客户端连接到sugnalr Hub。Signalr Uncaught TypeError：currentHub.server.OnConnected不是函数（...）

集线器OnConnected方法是这样的

public override Task OnConnected() 
     { 
      try 
      { 
       var cType = Context.QueryString["type"]; 
       var connectionId = Context.ConnectionId; 
       var connectedUserList = (from d in Users 
             where d.ClientType == cType 
                  select d).ToList(); 
       if (connectedUserList.Count > 0) 
       { 
        var conUser = connectedUserList.First<ConnectedUsers>(); 
        conUser.ConnectionIds.Add(connectionId); 
       } 
       else 
       { 
        var newUser = new ConnectedUsers 
        { 
         ConnectionIds = new HashSet<string> {connectionId} 
         , 
         ClientType = cType 
        }; 
        Users.Add(newUser); 
       } 
      } 
      catch (Exception ex) 
      { 

      } 
      return base.OnConnected(); 
     }

其他集线器方法

public void PushMessage() 
     { 
      try 
      { 
       var context = GlobalHost.ConnectionManager.GetHubContext<MainHub>(); 
        var user = (from d in Users 
             where d.ClientType == "WIN" 
             select d).Single(); 
       context.Clients.Clients(user.ConnectionIds.ToArray()).sendAlert("EXCEL"); 
      } 
      catch (Exception e) 
      { 
       //throw; 
      } 
     }

和JavaScript客户端连接的代码如下

<html> 
<body> 
    @RenderBody() 

    @Scripts.Render("~/bundles/jquery") 
    <script src="~/Scripts/jquery.signalR-2.2.1.js"></script> 
    <script src="@Url.Content("http://localhost:1010/signalr/hubs")"></script> 
    @RenderSection("scripts", required: false) 
</body> 
</html> 


<script type="text/javascript"> 

    var currentHub = []; 
    var connectionDetails = {}; 
    var SignalRHandler = { 
     _settings: { 
      connectionDetails: { 
       id: "1", 
       userName: "" 
      }, 
      hub: $(), 
      callBack: $(), 
      url: "" 
     }, 

     initilaize: function(options) { 
      this._settings = $.extend(true, this._settings, options); 
      if (!$.connection) 
       alert("$.connection undefined"); 
      else 
       this._bindEvents(); 
     }, 

     _bindEvents: function() { 
      // Start Hub 
      $.connection.hub.url = this._settings.url; 
      $.connection.hub.qs = { 'type': 'WEB' } 
      currentHub = $.connection[this._settings.hub], connectionDetails = this._settings.connectionDetails; 

      if (currentHub != undefined) { 

       currentHub.client.sendAlert = this._settings.callBack; 

       $.connection.hub.start().done(function() { 
        currentHub.server.OnConnected(); 

       }); 
       $.connection.hub.disconnected(function() { 
        setTimeout(function() { 
         $.connection.hub.start().done(function() { 
          currentHub.server.OnConnected(); 
         }); 
        }, 2000); // Restart connection after 2 seconds. 
       }); 
      } 

     }, 
     pushChatMessage: function() { 
      currentHub.server.pushMessage(); 
     }, 
     showMsg:function(msg) { 
      alert(msg); 
     } 
    }; 
    jQuery(document).ready(function($) { 

     SignalRHandler.initilaize({ 
      callBack: SignalRHandler.showMsg, 
      hub: "mainHub", 
      url: "http://localhost:1010/signalr/" 

     }); 

    }); 
</script>

该代码可以正常使用，并连接到集线器并不断从集线器接收消息。但是，当我检查调试器控制台它说。

Uncaught TypeError: currentHub.server.OnConnected is not a function(…)

如何摆脱这个错误？

来源

2016-11-30 tarzanbappa

你没有手动调用OnConnected。客户端连接到服务器时会被调用。 – Pawel

当您从SignalR客户端调用服务器方法时，方法名称应该是驼峰式，除非您在集线器的方法中使用HubMethodName属性指定了不同的名称。

所以你的情况调用你的OnConnected方法应该是这样的：currentHub.server.onConnected();

参考：https://www.asp.net/signalr/overview/guide-to-the-api/hubs-api-guide-javascript-client#callserver

来源

2016-11-30 18:03:16 sam2929

我试图通过将OnConnected更改为onConnected，但问题仍然存在。当我将Hub的OnConnected更改为OnConnect时，错误消失。但.Net客户端无法使用onConnect方法连接到集线器 – tarzanbappa

Signalr Uncaught TypeError：currentHub.server.OnConnected不是函数（...）

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