【发布时间】:2017-03-22 11:25:22
【问题描述】:
我正在尝试运行signalr 的简单示例,我正在尝试执行的示例是here。
我确认$.connection.hub.start().done 工作正常。问题是chat.client.broadcastMessage 未执行,因为我在其中放置了一个警报以确保但该警报没有执行。任何人都可以帮我解决我的问题吗?这是我的代码:
聊天页面.aspx
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.container {
background-color: #99CCFF;
border: thick solid #808080;
padding: 20px;
margin: 20px;
}
</style>
</head>
<body>
<div class="container">
<input type="text" id="message" />
<input type="button" id="sendmessage" value="Send" />
<input type="hidden" id="displayname" />
<ul id="discussion">
</ul>
</div>
<!--Script references. -->
<!--Reference the jQuery library. -->
<script src="scripts/jquery-1.6.4.min.js"></script>
<!--Reference the SignalR library. -->
<script src="scripts/jquery.signalR-2.2.1.min.js"></script>
<!--Reference the autogenerated SignalR hub script. -->
<script src='<%: ResolveClientUrl("~/signalr/hubs") %>'></script> <!--Add script to update the page and send messages.-->
<script type="text/javascript">
$(function () {
// Declare a proxy to reference the hub.
var chat = $.connection.chatHub;
// Create a function that the hub can call to broadcast messages.
chat.client.broadcastMessage = function (name, message) {
// Html encode display name and message.
var encodedName = $('<div />').text(name).html();
var encodedMsg = $('<div />').text(message).html();
// Add the message to the page.
$('#discussion').append('<li><strong>' + encodedName
+ '</strong>: ' + encodedMsg + '</li>');
};
// Get the user name and store it to prepend to messages.
$('#displayname').val(prompt('Enter your name:', ''));
// Set initial focus to message input box.
$('#message').focus();
// Start the connection.
$.connection.hub.start().done(function () {
$('#sendmessage').click(function () {
// Call the Send method on the hub.
chat.server.send($('#displayname').val(), $('#message').val());
// Clear text box and reset focus for next comment.
$('#message').val('').focus();
});
});
});
</script>
</body>
</html>
ChatHub.cs
public class ChatHub : Hub
{
//used to send message to all clients
public void send(String name, String message)
{
Clients.All.brodcastMessage(name,message);
}
}
Startup.cs
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.MapSignalR();
}
}
注意:当我输入聊天时,我已经弄清楚了。下拉菜单没有显示客户端,因此我无法调用 chat.client.broadcastMessage,为什么?
【问题讨论】:
-
您检查过控制台日志并查看是否有任何错误吗?
-
@CarstenLøvboAndersen 是的,我用过它,它不会打印里面的文本。 :(
标签: javascript c# jquery asp.net signalr