Simple application of KAFKA in JAVA

kafka producer:

public static void main(String[] args) {
        final KafkaProducer<String, String> producer;
        try {
            Properties properties = new Properties();
            properties.put("bootstrap.servers", "node06:9092,node07:9092,node08:9092");
            properties.put("acks", "all");
            properties.put("retries", "0");
            properties.put("batch.size", "1");
            properties.put("auto.commit.interval.ms", "10000");
            properties.put("linger.ms", "0");
            properties.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
            properties.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
            properties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
            properties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
            properties.put("block.on.buffer.full", "true");
            properties.put("producer.type", "async");
            producer = new KafkaProducer<String, String>(properties);
            int i = 1;
            while (true) {
                Thread.sleep(2000);
                String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
                producer.send(new ProducerRecord<String, String>("topic_name", String.valueOf(i))).get().topic();
                i++;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

kafka consumer:

public static void main(String[] args) {
		Properties props = new Properties();
		props.put("bootstrap.servers", "node06:9092,node07:9092,node08:9092");
		props.put("group.id", "AL_LOGS_DC_WUSGCNDHGFJSLKSMO2");
		// 关闭自动确认消费。
		props.put("enable.auto.commit", "false");
		props.put("auto.commit.interval.ms", "10000");
		props.put("session.timeout.ms", "30000");
		props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
		props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
		KafkaConsumer<String, String> consumer = new KafkaConsumer<String, String>(props);
		consumer.subscribe(Arrays.asList("al_logs"));
		while (true) {
			try{
				ConsumerRecords<String, String> records = consumer.poll(100);
				for (ConsumerRecord<String, String> record : records) {
					System.out.println("Consumer:" + record.value());
				}
				consumer.commitSync();
			}catch (Exception e){
				e.printStackTrace();
				consumer.close();
			}
			
		}
	}

PS: The kafka broker address needs to indicate the corresponding address in the HOST file.