SignalR 2不生成/ signalr / hubs

时间:2014-10-09 08:30:35

标签: asp.net-mvc signalr signalr-hub signalr.client

以下是页面:

        <script src="~/Scripts/jquery-1.10.2.min.js"></script>
    <script src="~/Scripts/jquery.signalR-2.1.2.min.js"></script>
    <!--Reference the autogenerated SignalR hub script. -->
    <script src="~/signalr/hubs"></script>
    <!--SignalR script to update the chat page and send messages.-->
    <script>
        $(function () {
            // Reference the auto-generated proxy for the hub.
            var notification = $.connection.notificationHub;
            // Create a function that the hub can call back to display messages.
            notification.client.addNewMessage = function (message) {
                // Add the message to the page.
                $('#discussion').append('<li><strong>'
                    + '</strong>: ' + htmlEncode(message) + '</li>');
            };
            // Set initial focus to message input box.
            $('#message').focus();
            // Start the connection.
            $.connection.hub.start().done(function () {
                $('#sendmessage').click(function () {
                    // Call the Send method on the hub.
                    chat.server.send($('#message').val());
                    // Clear text box and reset focus for next comment.
                    $('#message').val('').focus();
                });
            });
        });
        // This optional function html-encodes messages for display in the page.
        function htmlEncode(value) {
            var encodedValue = $('<div />').text(value).html();
            return encodedValue;
        }
    </script>

这是集线器类:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;

namespace AdminWebApp.Hubs
{
     [HubName("notificationHub")] 
    public class NotificationHub : Hub
    {

        public void SendNotification(string message)
        {
            Clients.All.addNewMessage(message);
        }
    }
}

Startup.cs:

using Microsoft.Owin;
using Owin;

[assembly: OwinStartupAttribute(typeof(AdminWebApp.Startup))]
namespace AdminWebApp
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }
    }
}

当我尝试访问:http://localhost:4551/signalr/hubs时,我收到HTTP 404未找到错误,当我尝试运行该页面时,我得到:

 Failed to load resource: the server responded with a status of 404 (Not Found)
 Uncaught TypeError: Cannot read property 'client' of undefined 

我试过这个:signalR : /signalr/hubs is not generated但它没有用。

有什么想法吗?

6 个答案:

答案 0 :(得分:4)

它对我有用:

转到项目中的启动类,在Configuration方法中添加:

app.MapSignalR(&#34; / signalr&#34;,new HubConfiguration());

我希望它适合你

答案 1 :(得分:3)

在Application_Start事件的Global.asax文件中,您必须注册中心URL。

    protected void Application_Start()
    {
        RouteTable.Routes.MapHubs();
    }

答案 2 :(得分:3)

尝试此操作,无需在App-Start事件中编写行

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Owin;
using Microsoft.Owin;
[assembly: OwinStartup(typeof(Faceless_Books.Hubs.Startup))]

namespace Faceless_Books.Hubs
{
public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        // Any connection or hub wire up and configuration should go here
        app.MapSignalR();
    }
}
}

答案 3 :(得分:0)

如果您使用的是Visual Studio 2012,则SignalR Hub类(v2)模板将不可用。您可以添加名为ChatHub的普通类。

要遵循的步骤

1)In Solution Explorer, right-click the project, select **Add** | SignalR Hub Class (v2). Name the class ChatHub.cs

2)修改课程

using System;
using System.Web;
using Microsoft.AspNet.SignalR;
namespace SignalRChat
{
    public class ChatHub : Hub
    {
        public void Send(string name, string message)
        {
            // Call the broadcastMessage method to update clients.
            Clients.All.broadcastMessage(name, message);
        }
    }
}

答案 4 :(得分:0)

在我的作品中,我从一个例子中复制/粘贴了这个班级的名字,但这不是我班级的名字。

JS:

var notification = $.connection.notificationHub; // <--- my class is not called "NotificationHub"

C#:

public class ToastHub : Hub  // <--- should have been $.connection.toastHub above
{ ... }

答案 5 :(得分:0)

您可能需要禁用请求过滤功能才能启用pull Hubs脚本

<system.webServer>
    <security>
      <requestFiltering>
        <hiddenSegments>
          <clear></clear>
        </hiddenSegments>
      </requestFiltering>        
    </security>
</system.webServer>