聊天框Demo:DotNetCore+ActiveMQ+Mqttjs 实现前后台消息监听
网上查了查 ActiveMQ + .net core 的例子很少,自己做一个demo 作为记录,另外FineUI Core基础版要来了,出来后我会用FineUI再做一版,为知识星球的引流...
1.安装SDK 准备ActiveMQ 服务
此处用的 .net core 2.0+
此处用的 apache-activemq-5.9.0
2.创建项目
3.引用样式
4.引用DLL
注意:先安装 Apache.NMS.NetCore 再安装 Apache.NMS.ActiveMQ.NetCore
5.抄袭一个ActiveMQHelp
来自 https://blog.csdn.net/PeterPan_hai/article/details/52354913
这里未做任何修改,正常添加引用即可
6.写代码
引用 paho-mqtt.js
直接重写 View/Home/Index.cshtml
@{ ViewData["Title"] = "全球都比较大的聊天室"; } @section body{ <h2>@ViewData["Title"]</h2> <form id="form1"></form> } @section Scripts{ @*框架已经引用了*@ @*<script src="~/js/MQTT/paho-mqtt.js"></script>*@ <script> $(document).ready(function () { InitPage();//准备页面 ItinPahoClient();//准备链接 }); //核心方法:通过MQtt连接 function ItinPahoClient() { //地址 端口 链接名称(不是主题) var client = new Paho.Client("没神的IP,大伙都知道", 61614, "jsclient"); //监听事件 client.onMessageArrived = function (msg) { //收到消息 messagebox.append("接收到消息:" + msg.payloadString); $('#textbox').val(''); }; //链接配置 client.connect({ onSuccess: function () { messagebox.append('链接成功'); //订阅主题为myqueue client.subscribe("myqueue"); //发布消息,主题为myqueue2 //client.publish("myqueue2", "Message from js client"); } }); } //发送消息 function setmessage() { var v = $('#textbox').val(); bsEx.dopostback('@Url.Action("SetMessage")', {"msg":v}, function (t) { eval('(' + t + ')'); }); } ///初始化页面 function InitPage() { //表单 new bsEx.ItemForm({ id: "form1", renderto: '#form1', items: [ { type: 'textarea', name: 'messagebox', title: '消息', height: '300px' }, { type: 'text', name: 'textbox', title: '发送' } ], colunb: 1, showlabel: false, css: { 'width': '500px' } }).init().attr("onkeydown","if(event.keyCode == 13) { return false; }"); //发送按钮 var btn = $('#textbox').addbutton("发送"); btn.on('click', function () { setmessage(); }) $('#footer span').prepend("v" + $.fn.bsEx); //重写append 加个回车 messagebox = $('#messagebox'); messagebox.append = function () { arguments[0] = arguments[0] +' \r\n '; ($.fn.append).apply(this,arguments); } messagebox.append('...链接中'); } //再text后面加一个button $.fn.addbutton = function (text) { $(this).parent().addClass('input-group'); var bid = $(this).attr('id') + '-btn'; var b = $('<span class="input-group-addon btn" id="' + bid + '">' + text + '</span >'); $(this).after(b); $(this).attr("onkeydown", "if(event.keyCode == 13) { setmessage(); }"); return $(b); } </script> }
注意:前台的核心方法 ItinPahoClient();
修改 Program.cs
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Threading.Tasks; using ActiveMQTest.Controllers; using Microsoft.AspNetCore; using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Configuration; using Microsoft.Extensions.Logging; namespace ActiveMQTest { public class Program { /// <summary> /// MQ /// </summary> public static ActiveMQHelp mymq { get; set; } public static void Main(string[] args) { //开始链接和订阅主题 mymq = new ActiveMQHelp(isLocalMachine: false, remoteAddress: "没神的IP,大伙都知道");
//主题名称 myqueue 与前台一致 ,这里注意区分 topic 和 queue的区别 Program.mymq.InitQueueOrTopic(topic: true, name: "myqueue", selector: false); CreateWebHostBuilder(args).Build().Run(); } public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseStartup<Startup>(); } }
修改 Controllers/HomeController.cs
using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Mvc; using ActiveMQTest.Models; namespace ActiveMQTest.Controllers { public class HomeController : Controller { public IActionResult Index() { return View(); } [HttpPost] [ValidateAntiForgeryToken] public ActionResult SetMessage(string msg) { //发送 Program.mymq.SendMessage(msg, "newid", priority: Apache.NMS.MsgPriority.Lowest); return Content("console.log(\""+ msg + " 发送成功\");"); } [HttpPost] [ValidateAntiForgeryToken] public ActionResult GetMessage() { //后台拿一次 return Content("console.log(\"" + Program.mymq.GetMessage() + "\");") ; } public IActionResult Privacy() { return View(); } [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)] public IActionResult Error() { return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier }); } } }
至此,代码全部完成,可以运行,只要IP对,基本没啥大问题,不会的问我,源码这里下载