Hello everyone,
i want to get data from mqtt but always value dosent appear.
the default.items file contains :
String text “MQTT [%s]” { mqtt="<[msg:mtt/rx/5/values:state:default]" }
the sitemap file contains :
sitemap default label=“Welcome to First Page of SmA” {
Frame label=“MQTT” {
Text item=text [label="text value : "]
}
}
the config file contains :
mqtt:msg=tcp://localhost:1883
mqtt:msg.clientId=mtt
Finally, i create my mqtt client with java program to send date beacause i dont have sonsor yet.
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
public class main {
public static void main(String[] args) {
String topic = "MQTT Examples";
String content = "Message from MqttPublishSample";
int qos = 1;
String broker = "tcp://localhost:1883";
String clientId = "mtt";
MemoryPersistence persistence = new MemoryPersistence();
try {
MqttClient sampleClient = new MqttClient(broker, clientId, persistence);
MqttConnectOptions connOpts = new MqttConnectOptions();
connOpts.setCleanSession(true);
System.out.println("Connecting to broker: "+broker);
sampleClient.connect(connOpts);
System.out.println("Connected");
System.out.println("Publishing message: "+content);
MqttMessage message = new MqttMessage(content.getBytes());
message.setQos(qos);
sampleClient.publish(topic, message);
System.out.println("Message published");
sampleClient.disconnect();
System.out.println("Disconnected");
System.exit(0);
} catch(MqttException me) {
System.out.println("reason "+me.getReasonCode());
System.out.println("msg "+me.getMessage());
System.out.println("loc "+me.getLocalizedMessage());
// System.out.println("cause "+me.getCause());
System.out.println("excep "+me);
// me.printStackTrace();
}
}
}
there is my client console :
Connecting to broker: tcp://localhost:1883
Connected
Publishing message: Message from MqttPublishSample
Message published
Disconnected
I dont know why my openhab log dosent show me any data the .app too.
Please can someone help me ?
thank you