java——spring boot集成kafka——java代码实现

引入依赖：

<dependency>
      <groupId>org.apache.kafka</groupId>
      <artifactId>kafka-clients</artifactId>
      <version>2.4.1</version>
</dependency>

⽣产者发送消息的基本实现

#### //消息的发送方
public class MyProducer {

private final static String TOPIC_NAME = "my-replicated-topic";

public static void main(String[] args) throws ExecutionException,InterruptedException {
Properties props = new Properties();
props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,"10.31.167.10:9092,10.31.167.10:9093,10.31.167.10:9094");
//把发送的key从字符串序列化为字节数组
props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,StringSerializer.class.getName());
//把发送消息value从字符串序列化为字节数组
props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,StringSerializer.class.getName());

Producer<String, String> producer = new KafkaProducer<String,String>(props);

Order order = new Order((long) i, i);
ProducerRecord<String, String> producerRecord = new ProducerRecord<String, String>(TOPIC_NAME, order.getOrderId().toString(), JSON.toJSONString(order));
RecordMetadata metadata = producer.send(producerRecord).get();
//=====阻塞=======
System.out.println("同步方式发送消息结果：" + "topic-" +metadata.topic() + "|partition-"+ metadata.partition() + "|offset-" +metadata.offset());