[英]client property undefined in SignalR Move Shape demo under IIS 7.5?
我在使SignalR演示Move Shape在IIS 7.5上运行时遇到麻烦。 它适用于我在IIS Express和Visual Studio 2013下的开发PC上。
我目前正在将Move.html文件和/ scripts从项目复制到IIS 7.5 PC上的wwwroot目录。
当我从http:// localhost/Move.html在IIS PC上加载http:// localhost/Move.html ，在javascript中出现以下错误：
未捕获的TypeError：无法读取未定义的属性“ client”
这是我上一行var moveShapeHub = $.connection.moveShapeHub,的结果var moveShapeHub = $.connection.moveShapeHub,返回moveShapeHub为未定义。
Move.html：
<!DOCTYPE html>
<html>
<head>
<title>SignalR MoveShape Demo</title>
<style>
#shape {
width: 100px;
height: 100px;
background-color: #FF0000;
}
</style>
</head>
<body>
<script src="Scripts/jquery-1.10.2.min.js"></script>
<script src="Scripts/jquery-ui-1.10.3.min.js"></script>
<script src="Scripts/jquery.signalR-2.1.2.min.js"></script>
<script src="/signalr/hubs"></script>
<script>
$(function () {
var moveShapeHub = $.connection.moveShapeHub,
$shape = $("#shape"),
// Send a maximum of 10 messages per second
// (mouse movements trigger a lot of messages)
messageFrequency = 10,
// Determine how often to send messages in
// time to abide by the messageFrequency
updateRate = 1000 / messageFrequency,
shapeModel = {
left: 0,
top: 0
},
moved = false;
moveShapeHub.client.updateShape = function (model) {
shapeModel = model;
// Gradually move the shape towards the new location (interpolate)
// The updateRate is used as the duration because by the time
// we get to the next location we want to be at the "last" location
// We also clear the animation queue so that we start a new
// animation and don't lag behind.
$shape.animate(shapeModel, { duration: updateRate, queue: false });
};
$.connection.hub.start().done(function () {
$shape.draggable({
drag: function () {
shapeModel = $shape.offset();
moved = true;
}
});
// Start the client side server update interval
setInterval(updateServerModel, updateRate);
});
function updateServerModel() {
// Only update server if we have a new movement
if (moved) {
moveShapeHub.server.updateModel(shapeModel);
moved = false;
}
}
});
</script>
<div id="shape" />
</body>
</html>
因此，它能够找到/ signalr / hubs和其他定义，但无法在IIS 7.5下解析该集线器，但它在IIS express下有效。
我是否缺少IIS 7.5下的某些设置？
在IIS 7.5下需要哪些设置步骤？
可以在IIS 7.5下工作吗？
这是中心代码（直接来自演示）：
using System;
using System.Threading;
using Microsoft.AspNet.SignalR;
using Newtonsoft.Json;
namespace MoveShapeDemo
{
public class Broadcaster
{
private readonly static Lazy<Broadcaster> _instance =
new Lazy<Broadcaster>(() => new Broadcaster());
// We're going to broadcast to all clients a maximum of 25 times per second
private readonly TimeSpan BroadcastInterval =
TimeSpan.FromMilliseconds(40);
private readonly IHubContext _hubContext;
private Timer _broadcastLoop;
private ShapeModel _model;
private bool _modelUpdated;
public Broadcaster()
{
// Save our hub context so we can easily use it
// to send to its connected clients
_hubContext = GlobalHost.ConnectionManager.GetHubContext<MoveShapeHub>();
_model = new ShapeModel();
_modelUpdated = false;
// Start the broadcast loop
_broadcastLoop = new Timer(
BroadcastShape,
null,
BroadcastInterval,
BroadcastInterval);
}
public void BroadcastShape(object state)
{
// No need to send anything if our model hasn't changed
if (_modelUpdated)
{
// This is how we can access the Clients property
// in a static hub method or outside of the hub entirely
_hubContext.Clients.AllExcept(_model.LastUpdatedBy).updateShape(_model);
_modelUpdated = false;
}
}
public void UpdateShape(ShapeModel clientModel)
{
_model = clientModel;
_modelUpdated = true;
}
public static Broadcaster Instance
{
get
{
return _instance.Value;
}
}
}
public class MoveShapeHub : Hub
{
// Is set via the constructor on each creation
private Broadcaster _broadcaster;
public MoveShapeHub()
: this(Broadcaster.Instance)
{
}
public MoveShapeHub(Broadcaster broadcaster)
{
_broadcaster = broadcaster;
}
public void UpdateModel(ShapeModel clientModel)
{
clientModel.LastUpdatedBy = Context.ConnectionId;
// Update the shape model within our broadcaster
_broadcaster.UpdateShape(clientModel);
}
}
public class ShapeModel
{
// We declare Left and Top as lowercase with
// JsonProperty to sync the client and server models
[JsonProperty("left")]
public double Left { get; set; }
[JsonProperty("top")]
public double Top { get; set; }
// We don't want the client to get the "LastUpdatedBy" property
[JsonIgnore]
public string LastUpdatedBy { get; set; }
}
}
这是Startup.cs：
using Microsoft.Owin;
using Owin;
[assembly: OwinStartup(typeof(MoveShapeDemo.Startup))]
namespace MoveShapeDemo
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
// Any connection or hub wire up and configuration should go here
app.MapSignalR();
}
}
}
启动网站后，您可以检查是否为/ Signalr / hubs加载了中心代理。 只需单击您的URL http：// localhost / SignalR / hubs。您应该看到SignalR生成的代理（除非您已在Global.asax中将其关闭，但它看起来并不像它，因为您可以在IISExpress中对其进行击中。
如果您可以启动集线器代理，则只需在HTML中更改以下内容即可：
<script src="/signalr/hubs"></script>
to
<script src="http:/localhost/signalr/hubs"></script>
您可以在此处了解有关SignalR的更多信息-关于signalR的所有内容的真正好资源。
您说在Visual Studio和IIS中运行时表示Move.html可以正常工作。 作为Move.html的一部分，Visual Studio解决方案或项目中还有什么？ 您的集线器有C＃代码，您已经部署了吗？ / signalr / hubs的使用表明Move.html和集线器是同一项目的一部分，但是在原始查询中，您说只是移动Move.html。 您将必须发布整个项目，然后将发布的版本移至wwwroot文件夹。 有关发布步骤，请点击此处
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