1. maven依赖包
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<dependency> <groupid>org.apache.kafka</groupid> <artifactid>kafka-clients</artifactid> <version>0.9.0.1</version> </dependency> |
2. 生产者代码
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package com.lnho.example.kafka; import org.apache.kafka.clients.producer.kafkaproducer; import org.apache.kafka.clients.producer.producer; import org.apache.kafka.clients.producer.producerrecord; import java.util.properties; public class kafkaproducerexample { public static void main(string[] args) { properties props = new properties(); props.put("bootstrap.servers", "master:9092"); 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<>("topic1", integer.tostring(i), integer.tostring(i))); producer.close(); } } |
3. 消费者代码
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package com.lnho.example.kafka; import org.apache.kafka.clients.consumer.consumerrecord; import org.apache.kafka.clients.consumer.consumerrecords; import org.apache.kafka.clients.consumer.kafkaconsumer; import java.util.arrays; import java.util.properties; public class kafkaconsumerexample { public static void main(string[] args) { properties props = new properties(); props.put("bootstrap.servers", "master:9092"); props.put("group.id", "test"); props.put("enable.auto.commit", "true"); props.put("auto.commit.interval.ms", "1000"); 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<>(props); consumer.subscribe(arrays.aslist("topic1")); while (true) { consumerrecords<string, string> records = consumer.poll(100); for (consumerrecord<string, string> record : records) system.out.printf("offset = %d, key = %s, value = %s\n", record.offset(), record.key(), record.value()); } } } |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/u012129558/article/details/80065817
