emqx中文开发文档

MQTT Java 客户端库 | EMQX 4.3 文档

EMQX配置以及Android连接_往事随风，浮生若梦的博客-CSDN博客

Android studied基于MQTT连接本地EMQX建立的MQTT服务器--下载jar包

mqtt jar 下载地址：

emqx环境搭建-客户端接入

下载 EMQX | EMQ-官方下载与安装

centos7安装emqx4.4.5失败，提示require openssl11 - EMQX - EMQ 问答社区 (askemq.com)

EMQX的使用_long yongtu的博客-CSDN博客_emqx使用 -客户端测试MQTT.fx (订阅和发布消息)

EMQ-代理订阅概述和应用使用内置模块实现静态代理_小哇666的博客-CSDN博客_emq代理

安装后访问：http://192.168.3.54:18083/ 用户名开始都是admin 密码默认为：pubilc 。接下来我们将会进入下面的界面

emqx控制台

MQTTX5.0客户端

登录可以有后台控制自动订阅
MQTT X：跨平台 MQTT 5.0 桌面客户端工具

MQTTX界面

mqtt.fx-1.7.1--客户端不推荐版本高要授权（账号登陆不是实现自动订阅）

mqtt.fx

emqx springboot接入

emqx通常需要提供参数

const broker = "118.178.***.**" 
const port = 1883 
const client_id = "w_client_my_01" 
const username = "user01" 
const password = "aaaaabbb********************"
const topic = "$share/gsfriend/scrm/m2s/msg/1/#"

导入包

<dependency>
  <groupId>org.eclipse.paho</groupId>
    <artifactId>org.eclipse.paho.client.mqttv3</artifactId>
    <version>1.2.2</version>
</dependency>

OnMessageCallback.java

package cn.stylefeng.guns.test_emqx;

import org.eclipse.paho.client.mqttv3.*;

public class OnMessageCallback implements MqttCallback {

    public void connectionLost(Throwable cause) {
        // 连接丢失后，一般在这里面进行重连
        System.out.println("连接断开，可以做重连");
    }

    public void messageArrived(String topic, MqttMessage message) throws Exception {
        // subscribe后得到的消息会执行到这里面
        System.out.println("接收消息主题:" + topic);
        System.out.println("接收消息:" + new String(message.getPayload()));
    }

    public void deliveryComplete(IMqttDeliveryToken token) {
        System.out.println("deliveryComplete---------" + token.isComplete());
    }
}

TestEMQX.java

package cn.stylefeng.guns.test_emqx;


import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
public class TestEMQX {


    public static void main(String[] args) {
        String username = "user01";
        String passWord = "aaaaabbb********************";
        int qos = 0;
        String broker = "tcp://118.178.***.**:1883";
        String clientId = "w_client_my_01";
        MemoryPersistence persistence = new MemoryPersistence();
        try {
            MqttClient client = new MqttClient(broker, clientId, persistence);

            // MQTT 连接选项
            MqttConnectOptions connOpts = new MqttConnectOptions();
            connOpts.setUserName(username);
            connOpts.setPassword(passWord.toCharArray());
            // 保留会话
            connOpts.setCleanSession(true);

            // 设置回调
            client.setCallback(new OnMessageCallback());

            // 建立连接
            System.out.println("Connecting to broker: " + broker);
            client.connect(connOpts);

            System.out.println("Connected");
  
        } catch (MqttException me) {
            System.out.println("reason " + me.getReasonCode());
            System.out.println("msg " + me.getMessage());
            System.out.println("loc " + me.getLocalizedMessage());
            System.out.println("cause " + me.getCause());
            System.out.println("excep " + me);
            me.printStackTrace();
    }
}}

emqx插件

[root@localhost ~]# l ls /etc/emqx/plugins/
acl.conf.paho          emqx_auth_pgsql.conf   emqx_lua_hook.conf    emqx_rule_engine.conf
emqx_auth_http.conf    emqx_auth_redis.conf   emqx_lwm2m.conf       emqx_sasl.conf
emqx_auth_jwt.conf     emqx_bridge_mqtt.conf  emqx_management.conf  emqx_sn.conf
emqx_auth_ldap.conf    emqx_coap.conf         emqx_prometheus.conf  emqx_stomp.conf
emqx_auth_mnesia.conf  emqx_dashboard.conf    emqx_psk_file.conf    emqx_telemetry.conf
emqx_auth_mongo.conf   emqx_exhook.conf       emqx_recon.conf       emqx_web_hook.conf
emqx_auth_mysql.conf   emqx_exproto.conf      emqx_retainer.conf

EMQX_AUTH_HTTP 插件使用指南 | EMQ

EMQX 认证鉴权（一）——基于 MySQL 的 MQTT 连接认证 | EMQ