本文整理汇总了Java中org.fusesource.mqtt.client.QoS.EXACTLY_ONCE属性的典型用法代码示例。如果您正苦于以下问题：Java QoS.EXACTLY_ONCE属性的具体用法？Java QoS.EXACTLY_ONCE怎么用？Java QoS.EXACTLY_ONCE使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.fusesource.mqtt.client.QoS的用法示例。
在下文中一共展示了QoS.EXACTLY_ONCE属性的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getQoS
static QoS getQoS(String qualityOfService) {
for (QoS q : QoS.values()) {
if (q.name().equalsIgnoreCase(qualityOfService)) {
return q;
}
}
if (qualityOfService.equalsIgnoreCase("ATMOSTONCE")) {
return QoS.AT_MOST_ONCE;
}
if (qualityOfService.equalsIgnoreCase("EXACTLYONCE")) {
return QoS.EXACTLY_ONCE;
}
if (qualityOfService.equalsIgnoreCase("ATLEASTONCE")) {
return QoS.AT_LEAST_ONCE;
}
throw new IllegalArgumentException("There is no QoS with name " + qualityOfService);
}
示例2: main
public static void main(final String[] args) throws Exception {
// Create a new MQTT connection to the broker. We are not setting the client ID. The broker will pick one for us.
System.out.println("Connecting to Artemis using MQTT");
MQTT mqtt = new MQTT();
mqtt.setHost("tcp://localhost:1883");
BlockingConnection connection = mqtt.blockingConnection();
connection.connect();
System.out.println("Connected to Artemis");
// Subscribe to topics
Topic[] topics = {new Topic("mqtt/example/publish", QoS.AT_LEAST_ONCE), new Topic("test/#", QoS.EXACTLY_ONCE), new Topic("foo/+/bar", QoS.AT_LEAST_ONCE)};
connection.subscribe(topics);
System.out.println("Subscribed to topics.");
// Publish Messages
String payload1 = "This is message 1";
String payload2 = "This is message 2";
String payload3 = "This is message 3";
connection.publish("mqtt/example/publish", payload1.getBytes(), QoS.AT_LEAST_ONCE, false);
connection.publish("test/test", payload2.getBytes(), QoS.AT_MOST_ONCE, false);
connection.publish("foo/1/bar", payload3.getBytes(), QoS.AT_MOST_ONCE, false);
System.out.println("Sent messages.");
Message message1 = connection.receive(5, TimeUnit.SECONDS);
Message message2 = connection.receive(5, TimeUnit.SECONDS);
Message message3 = connection.receive(5, TimeUnit.SECONDS);
System.out.println("Received messages.");
System.out.println(new String(message1.getPayload()));
System.out.println(new String(message2.getPayload()));
System.out.println(new String(message3.getPayload()));
}
示例3: testSubscribeMultipleTopics
@Test(timeout = 30 * 10000)
public void testSubscribeMultipleTopics() throws Exception {
byte[] payload = new byte[1024 * 32];
for (int i = 0; i < payload.length; i++) {
payload[i] = '2';
}
MQTT mqtt = createMQTTConnection();
mqtt.setClientId("MQTT-Client");
mqtt.setCleanSession(false);
final BlockingConnection connection = mqtt.blockingConnection();
connection.connect();
Topic[] topics = {new Topic("Topic/A", QoS.EXACTLY_ONCE), new Topic("Topic/B", QoS.EXACTLY_ONCE)};
Topic[] wildcardTopic = {new Topic("Topic/#", QoS.AT_LEAST_ONCE)};
connection.subscribe(wildcardTopic);
for (Topic topic : topics) {
connection.publish(topic.name().toString(), payload, QoS.AT_LEAST_ONCE, false);
}
int received = 0;
for (int i = 0; i < topics.length; ++i) {
Message message = connection.receive();
assertNotNull(message);
received++;
payload = message.getPayload();
String messageContent = new String(payload);
LOG.info("Received message from topic: " + message.getTopic() + " Message content: " + messageContent);
message.ack();
}
assertEquals("Should have received " + topics.length + " messages", topics.length, received);
}
示例4: main
public static void main(final String[] args) throws Exception {
System.out.println("Connecting to Artemis using MQTT");
MQTT mqtt = new MQTT();
mqtt.setHost("tcp://localhost:1883");
BlockingConnection connection = mqtt.blockingConnection();
connection.connect();
System.out.println("Connected to Artemis");
// Subscribe to a topic
Topic[] topics = {new Topic("mqtt/example/interceptor", QoS.EXACTLY_ONCE)};
connection.subscribe(topics);
System.out.println("Subscribed to topics.");
// Publish message
String payload1 = "This is message 1";
connection.publish("mqtt/example/interceptor", payload1.getBytes(), QoS.EXACTLY_ONCE, false);
System.out.println("Sent message");
// Receive the sent message
Message message1 = connection.receive(5, TimeUnit.SECONDS);
String messagePayload = new String(message1.getPayload(), StandardCharsets.UTF_8);
System.out.println("Received message: " + messagePayload);
}