activeMQ 推送之mqtt客户端

使用activeMQ进行android推送

activeMQ下载地址:http://activemq.apache.org/download.html

下载后是一个压缩包:apache-activemq-5.9.0-bin.zip

启动方式:

解压缩,进入apache-activemq-5.9.0-bin\apache-activemq-5.9.0\bin,双击activemq.bat,即可启动activeMQ服务

 启动之后:

 android客户端推送采用mqtt(paho-mqtt-client-1.0.1.jar),依赖包见附件

但是为了测试,我写了一个swing图形界面,充当手机客户端,依赖的jar包仍然是paho-mqtt-client-1.0.1.jar.界面如下:

使用方法:点击 [启动]按钮,开始接收推送消息
 对应的主类是:MqttSwing,用于接收推送消息.

我还写了一个发送推送消息的swing图形界面,充当推送后管系统,界面如下:

使用方法:点击[连接]按钮,才可以发送推送消息
 对应的主类:PusherApp,用于发送推送消息.

核心代码介绍如下.

客户端连接activeMQ,建立连接(只有建立连接,才能接收到推送消息)

方法名:connect,做了两件事:(1)建立连接;(2)订阅主题(topic)

/***
	 * 客户端和activeMQ服务器建立连接
	 * @param BROKER_URL
	 * @param clientId : 用于标识客户端,相当于ios中的device token
	 * @param TOPIC
	 * @param isCleanSession :false--可以接受离线消息;
	 * @return 是否启动成功 
	 */
	private boolean connect(String BROKER_URL,String clientId,String TOPIC,boolean isCleanSession){
		try {
			ComponentUtil.appendResult(resultTextPane, "connect time:"+TimeHWUtil.getCurrentMiniuteSecond(), true);
            mqttClient = new MqttClient(BROKER_URL, clientId, new MemoryPersistence());
            MqttConnectOptions options= new MqttConnectOptions();
            options.setCleanSession(isCleanSession);//mqtt receive offline message
            ComponentUtil.appendResult(resultTextPane, "isCleanSession:"+isCleanSession, true);
            options.setKeepAliveInterval(30);
            //推送回调类,在此类中处理消息,用于消息监听
            mqttClient.setCallback(new MyCallBack(MqttSwing.this));
            boolean isSuccess=false;
            try {
				mqttClient.connect(options);//CLIENT ID CAN NOT BE SAME
				isSuccess=true;
			} catch (Exception e) {
				if(isPrintException){
					e.printStackTrace();
				}
			}
            if(!isSuccess){
            	String message="连接失败,请检查client id是否重复了 或者activeMQ是否启动";
            	ComponentUtil.appendResult(resultTextPane, message, true);
            	GUIUtil23.warningDialog(message);
            	return false;
            }else{
            //Subscribe to topics 
	            mqttClient.subscribe(new String[]{TOPIC,clientId});
	           
	            System.out.println("topic:"+TOPIC+",  "+(clientId));
	            ComponentUtil.appendResult(resultTextPane, "TOPIC:"+TOPIC+",  "+(clientId), true);
            }

        } catch (MqttException e) {
        	if(isPrintException){
            e.printStackTrace();}
            GUIUtil23.errorDialog(e.getMessage());
            return false;
        }
		return true;
	}

推送消息到来时的回调类:MyCallBack

package com.mqtt.hw.callback;

import org.apache.commons.lang.StringEscapeUtils;
import org.eclipse.paho.client.mqttv3.MqttCallback;
import org.eclipse.paho.client.mqttv3.MqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.MqttTopic;

import com.mqtt.hw.MqttSwing;
import com.time.util.TimeHWUtil;

public class MyCallBack implements MqttCallback {
	private MqttSwing mqttSwing;
	
	
	
	public MyCallBack(MqttSwing mqttSwing) {
		super();
		this.mqttSwing = mqttSwing;
	}

	@Override
	public void connectionLost(Throwable cause) {
		
	}

	@Override
	public void messageArrived(MqttTopic topic, MqttMessage message)
			throws Exception {
		System.out.println("messageArrived...."+TimeHWUtil.getCurrentMiniuteSecond());
		String messageStr=StringEscapeUtils.unescapeHtml(new String(message.getPayload()));
		System.out.println("message:"+messageStr);
		this.mqttSwing.receiveMessage(messageStr);
		//使窗口处于激活状态

	}

	@Override
	public void deliveryComplete(MqttDeliveryToken token) {
		
	}

}

推送者与activeMQ建立连接:

/**
	 * 初始化connection和session
	 * 
	 * @throws Exception
	 */
	private void init(/* String mqIp,boolean transacted */) throws Exception {
		if (!DialogUtil.verifyTFEmpty(serverIpTextField, "服务器ip")) {
			return;
		}
		String transactedStr = transactedTextField.getText();
		boolean transacted = false;
		if (ValueWidget.isNullOrEmpty(transactedStr)) {
			transacted = false;
		} else {
			transacted = Boolean.parseBoolean(transactedStr);
		}
		String message = "transacted:" + transacted;
		ComponentUtil.appendResult(resultTextArea, message, true);
		System.out.println(message);
		String brokerUrl = String.format(BROKER_URL,
				serverIpTextField.getText());
		// 创建链接工厂
		TopicConnectionFactory factory = new ActiveMQConnectionFactory(
				ActiveMQConnection.DEFAULT_USER,
				ActiveMQConnection.DEFAULT_PASSWORD, brokerUrl);
		ComponentUtil.appendResult(resultTextArea, "url:" + brokerUrl, true);
		// 通过工厂创建一个连接
		
		connection = factory.createTopicConnection();
		// 启动连接
		connection.start();
		ComponentUtil.appendResult(resultTextArea, "启动connection 成功", true);
		// 创建一个session会话 transacted
		session = connection.createTopicSession(
				transacted /* Boolean.FALSE */, Session.AUTO_ACKNOWLEDGE);

	}

项目源代码见附件 mqtt_swing.zip

手机android客户端(测试推送)见附件 android-mqtt-push-master.zip

也可以从   https://github.com/tokudu/AndroidPushNotificationsDemo

  下载

详细配置参阅附件 mqtt推送详解.zip