package cn.tyys.mqttbroker.client;import android.os.Handler;import android.os.Message;import android.util.Log;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.MqttDeliveryToken;import org.eclipse.paho.client.mqttv3.MqttException;import org.eclipse.paho.client.mqttv3.MqttMessage;import org.eclipse.paho.client.mqttv3.MqttTopic;import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;/** * Created by lhq on 2018/5/21. */public class ApolloClient { private static String host; private static String userName = "admin"; private static String passWord = "password"; private static MqttClient client; private Handler handler; private static String send_topic ; private static String receive_topic ; public ApolloClient(Handler handler,String host,String send_topic,String receive_topic) { this.handler=handler; this.host=host; this.send_topic=send_topic; this.receive_topic=receive_topic; } public void createContent() throws MqttException { //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, "client", new MemoryPersistence()); MqttConnectOptions 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); //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 Log.d("lhq","connectionLost----------"); Message obtainMessage = handler.obtainMessage(); obtainMessage.what=0; obtainMessage.obj=cause.getMessage(); handler.sendMessage(obtainMessage); } @Override public void messageArrived(String topic, MqttMessage message) throws Exception { //subscribe后得到的消息会执行到这里面 Log.d("lhq","messageArrived----------"); Log.d("lhq",topic "---" message.toString()); Message obtainMessage = handler.obtainMessage(); obtainMessage.what=1; obtainMessage.obj=message.toString(); handler.sendMessage(obtainMessage); } @Override public void deliveryComplete(IMqttDeliveryToken token) { //publish后会执行到这里 Log.d("lhq","deliveryComplete---------" token.isComplete()); } }); //链接 client.connect(options); //订阅 client.subscribe(receive_topic, 1); } public void publish(String meg) throws MqttException { MqttTopic topic = client.getTopic(send_topic); MqttMessage message = new MqttMessage(); message.setQos(1); message.setRetained(true); Log.d("lhq",message.isRetained() "------ratained状态"); message.setPayload(meg.getBytes()); MqttDeliveryToken token = topic.publish(message); token.waitForCompletion(); }}
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