import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.math.BigInteger;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class ClientDemo {
/**
* @param args
* @throws IOException
* @throws UnknownHostException
*/
private static Logger logger=Logger.getLogger(ClientDemo.class);
public void toTB(String content){
logger.info("开始执行DHT方法*************************");
String HOST = "tcp://47.99.141.22:1883"; //TBip地址和mqtt端口
String TOPIC = "v1/devices/me/telemetry";//TB遥测数据API接口
String clientid = "client2";
MqttClient client=null;
MqttConnectOptions options;
MqttTopic topic;
String username="iQHq2135klo1PTVb6HCy";//设备秘钥
try {
// host为主机名,clientid即连接MQTT的客户端ID,一般以唯一标识符表示,MemoryPersistence设置clientid的保存形式,默认为以内存保存
client = new MqttClient(HOST, clientid, 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);//设备秘钥
// 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
client.setCallback(new MqttCallbackExtended() {
@Override
public void messageArrived(String topic, MqttMessage message) throws Exception {
String context = new String(message.getPayload());
}
@Override
public void deliveryComplete(IMqttDeliveryToken token) {
// TODO Auto-generated method stub
}
@Override
public void connectionLost(Throwable cause) {
// TODO Auto-generated method stub
}
@Override
public void connectComplete(boolean reconnect, String serverURI) {
// TODO Auto-generated method stub
}
});
topic = client.getTopic(TOPIC);
//setWill方法,如果项目中需要知道客户端是否掉线可以调用该方法。设置最终端口的通知消息
options.setWill(topic, "close".getBytes(), 2, true);
client.connect(options);
// sendCon = "{"temperature":"25","humidity":"12","light":"255"}";//json格式
client.publish(TOPIC, content.getBytes(), 0, false);//推送数据到tb上
} catch (MqttException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} finally {
}
}
}
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