Mqusing System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using uPLibrary.Networking.M2Mqtt;
using uPLibrary.Networking.M2Mqtt.Messages;
namespace M2Mmqtt
{
public partial class Form1 : Form
{
String enpoint = "192.168.221.35";
int port = 1883;
string user = "admin";
string pwd = "public";
string clientId = Guid.NewGuid().ToString();
MqttClient client;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void btnConnect_Click(object sender, EventArgs e)
{
try
{
client = new MqttClient(enpoint, port, false, MqttSslProtocols.None, null, null);
client.Connect(clientId, user, pwd);
if(client.IsConnected)
{
MessageBox.Show("连接成功！");
client.Subscribe(new string[] { "a/b/c" }, new byte[] { MqttMsgBase.QOS_LEVEL_AT_MOST_ONCE });
client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived;
}
}catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Client_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e)
{
Action
Invoke(showAct, new string[] { Encoding.UTF8.GetString(e.Message) });
//throw new NotImplementedException();
}
public void ShowMsg(string msg)
{
txtReceiveMsg.AppendText(msg);
}
private void txtReceiveMsg_TextChanged(object sender, EventArgs e)
{
}
}
}
package com.example.mqtt;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttCallback;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class MainActivity extends AppCompatActivity {
private String host = "tcp://192.168.221.50:1883";
private String userName = "admin";
private String passWord = "public";
private Handler handler;
private MqttClient client;
private String myTopic = "a/b";
private MqttConnectOptions options;
private ScheduledExecutorService scheduler;
public MainActivity() {
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
if(msg.what == 1) {
Toast.makeText(MainActivity.this, (String) msg.obj,Toast.LENGTH_SHORT).show();
System.out.println("-----------------------------");
} else if(msg.what == 2) {
Toast.makeText(MainActivity.this, "连接成功", Toast.LENGTH_SHORT).show();
try {
client.subscribe(myTopic, 1);
} catch (Exception e) {
e.printStackTrace();
}
} else if(msg.what == 3) {
Toast.makeText(MainActivity.this, "连接失败，系统正在重连", Toast.LENGTH_SHORT).show();
}
}
};
startReconnect();
}
//从新连接
private void startReconnect() {
scheduler = Executors.newSingleThreadScheduledExecutor();
scheduler.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
if(!client.isConnected()) {
connect();
}
}
}, 0 * 1000, 10 * 1000, TimeUnit.MILLISECONDS);
}
private void init() {
try {
//host为主机名，test为clientid即连接MQTT的客户端ID，一般以客户端唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
client = new MqttClient(host, "test",new MemoryPersistence());
//MQTT的连接设置
options = new MqttConnectOptions();
//设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，这里设置为true表示每次连接到服务器都以新的身份连接
options.setCleanSession(true);
//设置连接的用户名
options.setUserName(userName);
//设置连接的密码
options.setPassword(passWord.toCharArray());
// 设置超时时间 单位为秒
options.setConnectionTimeout(10);
// 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
options.setKeepAliveInterval(20);
//设置回调
client.setCallback(new MqttCallback() {
@Override
public void connectionLost(Throwable cause) {
//连接丢失后，一般在这里面进行重连
System.out.println("connectionLost----------");
}
@Override
public void deliveryComplete(IMqttDeliveryToken token) {
//publish后会执行到这里
System.out.println("deliveryComplete---------" + token.isComplete());
}
@Override
public void messageArrived(String topicName, MqttMessage message)
throws Exception {
//subscribe后得到的消息会执行到这里面
System.out.println("messageArrived----------");
System.out.println("========================"+message.toString());
Message msg = new Message();
//Toast.makeText(MainActivity.this,message.toString(),Toast.LENGTH_SHORT);
msg.what = 1;
msg.obj = topicName+"---"+message.toString();
handler.sendMessage(msg);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
//连接mqtt
private void connect() {
new Thread(new Runnable() {
@Override
public void run() {
try {
client.connect(options);
Message msg = new Message();
msg.what = 2;
handler.sendMessage(msg);
} catch (Exception e) {
e.printStackTrace();
Message msg = new Message();
msg.what = 3;
handler.sendMessage(msg);
}
}
}).start();
}
}