MqttManager.java
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package com.example.dahua.mqtt;
import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
public class MqttManager {
private static String accessKey;
private static String sign;
public static MqttClient mqttClient;
public static String groupId;
public static String topic;
private static int qosLevel;
public void init(){
final String brokerUrl = "tcp://post-cn-4590mq2hr03.mqtt.aliyuncs.com:1883";
groupId = "GID_HFJSIURFHAQO110";
topic = "Topic_Quene_Test";
qosLevel = 1;
final Boolean cleanSession = false;
String clientId = groupId + "@@@9ED96FB6D72C1698";
accessKey = "UimvLVp0Wj90P88u";
String secretKey = "TE4rZenITG27tiQqHx9qINjx71Nws7";
final MemoryPersistence memoryPersistence = new MemoryPersistence();
if (null == mqttClient) {
try {
mqttClient = new MqttClient(brokerUrl, clientId, memoryPersistence);
} catch (MqttException e) {
e.printStackTrace();
}
MqttConnectOptions connOpts = new MqttConnectOptions();
//cal the sign as password,sign=BASE64(MAC.SHA1(groupId,secretKey))
try {
sign = Tools.macSignature(clientId.split("@@@")[0], secretKey);
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
connOpts.setUserName(accessKey);
connOpts.setPassword(sign.toCharArray());
connOpts.setCleanSession(cleanSession);
connOpts.setKeepAliveInterval(90);
connOpts.setAutomaticReconnect(true);
mqttClient.setCallback(new MqttCallbackExtended() {
@Override
public void connectComplete(boolean reconnect, String serverURI) {
System.out.println("connect success");
}
@Override
public void connectionLost(Throwable throwable) {
System.out.println("connect lost:" + throwable.toString());
throwable.printStackTrace();
init();//初始化
}
@Override
public void messageArrived(String s, MqttMessage mqttMessage) throws Exception {
System.out.println("receive msg from topic " + s + " , body is " + new String(mqttMessage.getPayload()));
}
@Override
public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
//this notice make sense when qos >0
// System.out.println("send msg succeed");
}
});
try {
mqttClient.connect(connOpts);
} catch (MqttException e) {
System.out.println("mqtt:" + e.toString());
e.printStackTrace();
}
/*while (true){
sendMessageTest("528C8E6CD4A3C659","zy105387",0);
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
System.out.println("connect success:"+e);
e.printStackTrace();
}
}*/
}
}
public void sendMq(String deviceId,String content) {
String recvClientId = groupId + "@@@"+deviceId;
final String p2pSendTopic = topic + "/p2p/" + recvClientId;
// String content = "{\"cmd\":\""+cmd+"\",\"clientId\":\"\",\"data\": \"6:00-19:25\"}";
MqttMessage message = new MqttMessage(content.getBytes());
message.setQos(qosLevel);
System.out.println("发送内容:" + p2pSendTopic);
if (null != mqttClient) {
try {
mqttClient.publish(p2pSendTopic, message);
} catch (MqttException e) {
e.printStackTrace();
}
}
}
}