Azure IoT libraries for Java
Connect, monitor, and control Internet of Things assets with Azure IoT Hub.
To get started with Azure IoT Hub, see Connect your device to your IoT hub using Java.
IoT Service library
Register devices and send messages from the cloud to registered devices using the IoT Service library.
Add a dependency to your Maven pom.xml
file to use the client library in your project.
<dependency>
<groupId>com.microsoft.azure.sdk.iot</groupId>
<artifactId>iot-service-client</artifactId>
<version>1.6.23</version>
</dependency>
IoT Device library
Send messages to the cloud and receive messages on devices using the IoT Device library.
Add a dependency to your Maven pom.xml
file to use the client library in your project.
<dependency>
<groupId>com.microsoft.azure.sdk.iot</groupId>
<artifactId>iot-device-client</artifactId>
<version>1.3.31</version>
</dependency>
Example
Send a message from Azure IoT Hub to a device.
Message messageToSend = new Message(messageText);
messageToSend.setDeliveryAcknowledgement(DeliveryAcknowledgement.Full);
messageToSend.setMessageId(java.util.UUID.randomUUID().toString());
// set message properties
Map<String, String> propertiesToSend = new HashMap<String, String>();
propertiesToSend.put(messagePropertyKey,messagePropertyKey);
messageToSend.setProperties(propertiesToSend);
CompletableFuture<Void> future = serviceClient.sendAsync(deviceId, messageToSend);
try {
future.get();
}
catch (ExecutionException e) {
System.out.println("Exception : " + e.getMessage());
}
Samples
IoT Device samples
IoT Service samples
Explore more sample Java code for Azure IoT you can use in your apps.
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