src/main/java/com/dji/sample/component/mqtt/config/MqttOutboundConfiguration.java
@@ -33,7 +33,7 @@ @ServiceActivator(inputChannel = ChannelName.OUTBOUND) public MessageHandler mqttOutbound() { MqttPahoMessageHandler messageHandler = new MqttPahoMessageHandler( mqttConfiguration.getClientId() + "_producer_" + System.currentTimeMillis(), MqttConfiguration.getBasicClientOptions().getClientId() + "_producer_" + System.currentTimeMillis(), mqttClientFactory); DefaultPahoMessageConverter converter = new DefaultPahoMessageConverter(); // use byte types uniformly