在虚机启动单节点的kafka,注意首先要开启zookeeper,然后再开kafka的服务,然后设置物理机的hosts文件(C:\Windows\System32\drivers\etc),添加“192.168.229.128 bogon”,bogon是虚机的host name,或者直接修改kafka的配置文件, 将conf目录下的server.properties的listeners修改为 listeners=PLAINTEXT://192.168.229.128:9092
然后创建maven工程
pom文件
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tansun</groupId>
<artifactId>KafkaTest</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>0.10.1.0</version>
</dependency>
</dependencies>
</project>
生产者
package com.tansun;
import java.util.Properties;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerRecord;
public class ProducerTest {
public static void main(String[] args) throws InterruptedException {
Properties props = new Properties();
// 设置broker地址,这里是单节点的kafka
props.put("bootstrap.servers", "192.168.229.128:9092");
// 将ProducerRecord中的key和value转换成字节
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);
// 给topic1发送一个字符串
producer.send(new ProducerRecord<String, String>("topic1", "hello kafka"));
producer.close();
}
}
消费者
package com.tansun;
import java.util.Arrays;
import java.util.Properties;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
public class ConsumerTest {
@SuppressWarnings("resource")
public static void main(String[] args) {
Properties props = new Properties();
props.put("bootstrap.servers", "192.168.229.128:9092");
props.put("group.id", "test");
// 将ProducerRecord中的key和value转换成字节
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);
// 设置topic,注意需要跟生产者发送消息的topic保持一致
consumer.subscribe(Arrays.asList("topic1"));
while (true) {
// 拉取消息,设置超时时间为100毫秒
ConsumerRecords<String, String> records = consumer.poll(100);
for (ConsumerRecord<String, String> record : records)
System.out.print(record.value() + "\n");
}
}
}