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SignalR搭建聊天室教程

时间:2015-02-23 00:11:16      阅读:873      评论:0      收藏:0      [点我收藏+]

开发环境:VS2013+.Net4.5+MVC5+jquery.signalR-2.2.0  

1.新建项目

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选择mvc
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2.通过NuGet联机查找SignalR

如图安装第一个

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3.在项目目录里添加Hub文件夹,并在里面新建ChatHub类,代码为:

 public class ChatHub : Microsoft.AspNet.SignalR.Hub
    {
        public void Hello()
        {
            Clients.All.hello();
        }
        public void Send(string name, string message)
        {
            // Call the addNewMessageToPage method to update clients.
            Clients.All.addNewMessageToPage(name, message);
        }
    }

4.在项目目录里添加Startup类,代码如下:

using Microsoft.Owin;
using Owin;
using SignalRChat_MySample;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
[assembly: OwinStartup(typeof(Startup))]
namespace SignalRChat_MySample
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            // Any connection or hub wire up and configuration should go here
            app.MapSignalR();
        }
    }
}

 

5.在Home控制器里新建一个Chat方法和对应的视图

  public ActionResult Chat()
        {
            return View();
        }

 

@{
    ViewBag.Title = "聊天室";
}
<h2>聊天室</h2>
<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>
@section scripts {
    <!--Script references. -->
    <!--The jQuery library is required and is referenced by default in _Layout.cshtml. -->
    <!--Reference the SignalR library. -->
    <script src="~/Scripts/jquery.signalR-2.2.0.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 chat = $.connection.chatHub;
            // Create a function that the hub can call back to display messages.
            chat.client.addNewMessageToPage = function (name, message) {
                // Add the message to the page.
                $(#discussion).append(<li><strong> + htmlEncode(name)
                    + </strong>:  + htmlEncode(message) + </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();
                });
            });
        });
        // This optional function html-encodes messages for display in the page.
        function htmlEncode(value) {
            var encodedValue = $(<div />).text(value).html();
            return encodedValue;
        }
    </script>
}


完成

源码下载

SignalR搭建聊天室教程

原文:http://www.cnblogs.com/lijianhong90/p/4297815.html

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