你可以只使用一个生产者和写不同的主题(https://kafka.apache.org/090/javadoc/index.html?org/apache/kafka/clients/producer/kafkaproducer.html). 班级 ProducerRecord 提供一个构造函数，允许指定记录应写入的主题(https://kafka.apache.org/090/javadoc/index.html?org/apache/kafka/clients/producer/producerrecord.html)

Properties props = new Properties();
props.put("bootstrap.servers", "localhost:4242");
props.put("acks", "all");
props.put("retries", 0);
props.put("batch.size", 16384);
props.put("linger.ms", 1);
props.put("buffer.memory", 33554432);
props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

Producer<String, String> producer = new KafkaProducer<>(props);
for(int i = 0; i < 100; i++)
    producer.send(new ProducerRecord<String, String>("my-topic", Integer.toString(i), Integer.toString(i)));

producer.close();