SignalR + MVC5 簡單示例

原文:SignalR + MVC5 簡單示例

本文和前一篇文章很類似，只不過是把?SignalR?應用在了 MVC 中

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新建項目，選擇 MVC 模板

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　　安裝 SignalR

Install-Package Microsoft.AspNet.SignalR

　　在項目中添加文件夾 Hubs

　　在 Hubs 文件夾中添加 SignalR Hub Class (V2)

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　　代碼如下

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);}}
}

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　　添加OWIN Startup Class

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　　代碼如下

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();}}
}

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　　在?HomeController 中添加方法 Chat

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

　　右擊添加 View

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　　代碼如下

@{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>
}

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　　運行效果（開啟兩個瀏覽器窗口）