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  • 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 = $('#messagebox');
                messagebox.append = function () {
                    arguments[0] = arguments[0] +' 
      ';
                    ($.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

     

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  • 原文地址:https://www.cnblogs.com/shiworkyue/p/10424500.html
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