add build.bat command for build pj and changed config

build.bat

@@ -0,0 +1 @@
+gradlew clean build -x test

src/main/java/com/ffii/towngas/config/MqttConsumerCallBack.java

@@ -10,6 +10,7 @@ import com.google.gson.Gson;
 public class MqttConsumerCallBack implements MqttCallback {
 
   private Gson gson = new Gson();
+  private boolean firstMessageReceived = false;
 
   @Override
   public void connectionLost(Throwable throwable) {
@@ -18,8 +19,12 @@ public class MqttConsumerCallBack implements MqttCallback {
 
   @Override
   public void messageArrived(String topic, MqttMessage message) throws Exception {
+    if (!firstMessageReceived) {
+      // Skip the first message
+      firstMessageReceived = true;
+      return;
+    }
     String payload = new String(message.getPayload());
-
     MqttRawData mqttRawData = gson.fromJson(payload, MqttRawData.class);
     mqttRawData.setTopic(topic);
     mqttRawData.setQos(message.getQos());

src/main/java/com/ffii/towngas/config/MqttConsumerConfig.java

@@ -11,6 +11,9 @@ import org.springframework.context.annotation.Configuration;
 
 @Configuration
 public class MqttConsumerConfig {
+
+  private boolean connected = false;
+
   @Value("${spring.mqtt.username}")
   private String username;
 
@@ -47,13 +50,15 @@ public class MqttConsumerConfig {
       options.setKeepAliveInterval(20);
       options.setWill("willTopic", (clientId + "Disconnected").getBytes(), 0, false);
       client.setCallback(new MqttConsumerCallBack());
-      System.out.println("Start Connection");
       client.connect(options);
-      System.out.println("End Connection");
       int[] qos = { 1, 1 };
       // Topics
-      String[] topics = { "topic1", "topic2" };
-      client.subscribe(topics, qos);
+      System.out.println("Subscribing to topic \"" + defaultTopic + "\" for client instance \"" + client.getClientId()
+          + "\" using QoS " + qos[0]);
+      String[] defaultTopics = defaultTopic.split(",");
+      client.subscribe(defaultTopics, qos);
+      // Set the connected flag
+      connected = true;
     } catch (MqttException e) {
       e.printStackTrace();
     }
@@ -68,6 +73,9 @@ public class MqttConsumerConfig {
   }
 
   public void subscribe(String topic, int qos) {
+    if (!connected) {
+      return;
+    }
     try {
       client.subscribe(topic, qos);
     } catch (MqttException e) {

src/main/resources/application-mqtt-config.yml

@@ -6,4 +6,4 @@ spring:
     client:
       id: cfghiftghigyui
     default:
-      topic: topic
+      topic: topic1, topic2