SignalR + MVC5 简单示例

来源：互联网发布：手机解锁软件编辑：程序博客网时间：2024/06/12 07:54

新建项目，选择 MVC 模板

　　安装 SignalR

Install-Package Microsoft.AspNet.SignalR

　　在项目中添加文件夹 Hubs

　　在 Hubs 文件夹中添加 SignalR Hub Class (V2)

　　代码如下

using System;using System.Collections.Generic;using System.Linq;using System.Web;using Microsoft.AspNet.SignalR;namespace SignalRChatMVC5.Hubs{    public class ChatHub : Hub    {        public void Send(string name, string message)        {            // Call the addNewMessageToPage method to update clients.            Clients.All.addNewMessageToPage(name, message);        }    }}

　　添加OWIN Startup Class

　　代码如下

using System;using System.Threading.Tasks;using Microsoft.Owin;using Owin;[assembly: OwinStartup(typeof(SignalRChatMVC5.Startup))]namespace SignalRChatMVC5{    public class Startup    {        public void Configuration(IAppBuilder app)        {            // Any connection or hub wire up and configuration should go here            app.MapSignalR();        }    }}

在 HomeController 中添加方法 Chat

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

　　右击添加 View

　　代码如下

@{    ViewBag.Title = "Chat";}<h2>Chat</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>}

　　运行效果（开启两个浏览器窗口）

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