Question

我正在尝试创建一个信号R聊天应用程序，我希望发送消息的用户应该是唯一接收消息的人不是每个人都应该接收消息但不知道我在哪里做错了因为消息没有被任何人收到。

我的代码是这样的：轮毂类

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

namespace SignalRTutorials
{
    public class ChatHub:Hub
    {
        public void Send(  string message)
        {
            // Call the broadcastMessage method to update clients.
           //  Clients.All.broadcastMessage(name, message);
           Clients.User(HttpContext.Current.Session["Name"].ToString()).broadcastMessage(message);

        }

    }
}

索引页面是这样的：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="SignalRTutorials.index1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
   <title>SignalR Simple Chat</title>
    <style type="text/css">
        .container {
            background-color: #99CCFF;
            border: thick solid #808080;
            padding: 20px;
            margin: 20px;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
 <div class="container">
        <input type="text" id="message" />
        <input type="button" id="sendmessage" value="Send" />
        <input type="hidden" id="displayname" runat="server"  />
        <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-2.1.0.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>
    <!--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.OnMessage = function (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.  + encodedName
                $('#discussion').append('<li><strong>'
                    + '</strong>:&nbsp;&nbsp;' + encodedMsg + '</li>');
            };
            // Get the user name and store it to prepend to messages.
            $('#displayname').val(prompt('Enter your name:', ''));

            <% Session["Name"] = displayname.Value ;%>
            // 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();
                });
            });
        });
    </script>
    </form>
</body>
</html>

Answer 1

您的问题：我希望发送邮件的用户应该是唯一收到邮件的人，不是每个人都应该接收邮件。

要解决此问题，请像这样修改ChatHub类。

public void Send(string message)
{
   Clients.Caller.broadcastMessage(message); // calling user will be broadcasted the message only.
   // OR use below one.
   Clients.Client(Context.ConnectionId).broadcastMessage(message); // Context.ConnectionId -- contains connectionid for calling user.
}

当客户端调用服务器端的功能时，您可以通过Context.ConnectionId检索其连接ID。

有用的链接 - http://www.asp.net/signalr/overview/guide-to-the-api/hubs-api-guide-server#selectingclients

试图创建信号R聊天应用程序，但给出错误

1 个答案: