Ubuntu下搭建Mqtt服务，跑Websocket JS客户端

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原创最新推荐文章于 2026-09-23 16:33:39 发布 1.9k 阅读 AI 写同款· GEO 优化 ›

Linux环境（Ubuntu）上搭建MQTT服务器（EMQX ）本文主要介绍EMQX 的一些内容，终端介绍如何在Ubuntu上安装EMQX，并可以在第三方电脑上访问该服务器。本文通过实际操作方式，详细记录每个步骤应该注意的要点。阅读详情

一、运行环境Ubuntu14.04

二、安装依赖

sudo apt-get update
sudo apt-get install g++
sudo apt-get install cmake
sudo apt-get install openssl
sudo apt-get install libssl-dev
sudo apt-get install xsltproc
sudo apt-get install docbook-xsl
sudo apt-get install docbook-defguide
sudo apt-get install build-essential
sudo apt-get install libc-ares-dev
sudo apt-get install uuid-dev
sudo apt-get install daemon
sudo apt-get install libwebsockets-dev
sudo apt remove libwebsockets3

三、安装libwebsockets（Websocket支持）

git clone https://github.com/warmcat/libwebsockets.git
cd libwebsockets
mkdir build
cd build
cmake ..
make
sudo make install
sudo ldconfig

四、安装Mosquitto（Mqtt服务器）

git clone https://github.com/eclipse/mosquitto.git
cd mosquitto
更改configure.mk中
WITH_WEBSOCKETS:=yes
WITH_SRV:=no
make
sudo make install
sudo cp mosquitto.conf /etc/mosquitto
请在/etc/mosquitto/mosquitto.conf 的“Default Listener” 一节添加如下几行：

port 1883
listener 1884
protocol websockets

五、运行mqtt服务

mosquitto -c /etc/mosquitto/mosquitto.conf

六、测试mqtt

mosquitto_sub -h 127.0.0.1 -p 1883 -t "track" -v （订阅消息，主题为“track”）

mosquitto_pub -h 127.0.0.1 -t "track" -m "test message" （发送消息）

七、MQTT协议 Websocket JS客户端

<html>
<head>
<title>Mosquitto Websockets</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.1/mqttws31.min.js" type="text/javascript"></script>
<script src="https://code.jquery.com/jquery-1.8.3.min.js" type="text/javascript"></script>

<script type="text/javascript">
var mqtt;
var reconnectTimeout = 3000;
var host = '127.0.0.1';   // hostname or IP address
var port = 1884;
var topic = 'track';       // topic to subscribe to
var useTLS = false;
var username = null;
var password = null;
// username = "test";
// password = "123456";
var cleansession = true;

function MQTTconnect() {
mqtt = new Paho.MQTT.Client(
host,
port,
"web_" + parseInt(Math.random() * 100,
10));
var options = {
timeout: 3,
useSSL: useTLS,
cleanSession: cleansession,
onSuccess: onConnect,
onFailure: function (message) {
$('#status').val("Connection failed: " + message.errorMessage + "Retrying");
setTimeout(MQTTconnect, reconnectTimeout);
}
};

mqtt.onConnectionLost = onConnectionLost;
mqtt.onMessageArrived = onMessageArrived;

if (username != null) {
options.userName = username;
options.password = password;
}
console.log("Host="+ host + ", port=" + port + " TLS = " + useTLS + " username=" + username + " password=" + password);
mqtt.connect(options);
}

function onConnect() {
$('#status').val('Connected to ' + host + ':' + port);
// Connection succeeded; subscribe to our topic
mqtt.subscribe(topic, {qos: 0});
$('#topic').val(topic);
}

function onConnectionLost(response) {
setTimeout(MQTTconnect, reconnectTimeout);
$('#status').val("connection lost: " + responseObject.errorMessage + ". Reconnecting");

};

function onMessageArrived(message) {

var topic = message.destinationName;
var payload = message.payloadString;

$('#ws').prepend('<li>' + topic + ' = ' + payload + '</li>');
};

function button_onclick(){
//这里写你要执行的语句
var tp = $('#sendtopic').val();
var val = $('#textsend').val();
if(tp==''||val=='')
{
alert("no aaa");
return;
}
var message = new Paho.MQTT.Message(val);
message.destinationName = tp;
message.qos=0;
mqtt.send(message);
//       mqtt.publish(tp, 0, val);
$('#ws').prepend('<li>' + tp + ' = ' + val+ '</li>');
};

$(document).ready(function() {
MQTTconnect();
});

</script>
</head>
<body>
<h1>Mosquitto Websockets</h1>
<div>
<div>Subscribed to <input type='text' id='topic' disabled />
Status: <input type='text' id='status' size="30" disabled />
</br>
publish to <input type='text' id='sendtopic' /> text <input type='text' id='textsend' size="30"/>
Status: <input type='button' value="send" id='btn' onclick="javascript:button_onclick()"/></div>
<ul id='ws' style="font-family: 'Courier New', Courier, monospace;"></ul>
</div>
</body>
</html>