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?
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)
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>