一直在努力解决这个错误贴两个小时..
TypeError: $.connection is undefined [Break On This Error] var chatHubClient = $.connection.chatHub;
这是我的Chat.cs(在控制器文件夹中 – 我猜这是我做错了,但我找不到任何关于放置它或如何路由它的文档)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using SignalR.Hubs;
namespace SingalrTest.Controllers
{
public class Chat
{
private readonly static Lazy<Chat> _instance = new Lazy<Chat>(() => new Chat());
public static Chat Instance
{ get { return _instance.Value; } }
}
[HubName("chatHub")]
public class ChatHub : Hub
{
private readonly int TimeoutInSeconds = 30;
private readonly Chat _chat;
public ChatHub() : this(Chat.Instance) { }
private ChatHub(Chat chat)
{
this._chat = chat;
}
public void Join(string channelName)
{
System.Diagnostics.Debug.WriteLine("Someone joined " + channelName);
}
}
}
最后,..可能_Layout.cs.html
<!DOCTYPE html>
<html lang="en">
<head>
<Meta charset="utf-8" />
<title>@ViewBag.Title - My ASP.NET MVC Application</title>
<link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />
<Meta name="viewport" content="width=device-width" />
@Styles.Render("~/Content/css")
@Scripts.Render("~/bundles/modernizr")
@Scripts.Render("~/Scripts/jquery-1.8.1.js")
@Scripts.Render("~/Scripts/jquery.signalR-0.5.3.js")
@Scripts.Render("~/signalr/hubs")
<script type="text/javascript">
$(document).ready(function () {
// var chatHubClient = jQuery.connection.chatHub;
var chatHubClient = $.connection.chatHub;
$.connection.chatHub.start(function () {
chatHubClient.join('TEST');
});
});
</script>
</head>
<body>
...
</body>
</html>
如果我访问/ signalr / hubs,我可以看到源是正确生成的.那么我想念的是什么？
解决方法
你可能已经开始……
但这是解决方案.
你在head标签中以正确的顺序拥有所有脚本.但是Visual Studio模板中的_Layout.cshtml在body标记的末尾有以下行.
@Scripts.Render("~/bundles/jquery")
@RenderSection("scripts",required: false)
这个bundle有jQuery库,它在加载时会覆盖$object.因此,SignalR在此设置上的任何“内容”现在都会被覆盖,无法访问.
只需在页面中使用以下内容即可
@section scripts {
@* Load your scripts here. (and remove jQuery,coz it's already loaded) *@
}
希望这可以帮助.