统一消息系统

public class KafkaProducerExample {

public static void main(String[] args) throws Exception {

Properties props = new Properties();

props.put("bootstrap.servers", "localhost:9092");

props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");

props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

Producer producer = new KafkaProducer<>(props);

for (int i = 0; i < 10; i++) {

ProducerRecord record = new ProducerRecord<>("my-topic", Integer.toString(i), "Message " + i);

producer.send(record);

}

producer.close();

}

}

public class KafkaConsumerExample {

网上办事平台

public static void main(String[] args) throws Exception {

Properties props = new Properties();

props.put("bootstrap.servers", "localhost:9092");

props.put("group.id", "test-group");

props.put("enable.auto.commit", "true");

props.put("auto.commit.interval.ms", "1000");

props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

Consumer consumer = new KafkaConsumer<>(props);

consumer.subscribe(Arrays.asList("my-topic"));

while (true) {

ConsumerRecords records = consumer.poll(Duration.ofMillis(100));

for (ConsumerRecord record : records)

System.out.printf("offset = %d, key = %s, value = %s%n", record.offset(), record.key(), record.value());

}

}

}