Java实现向Kafka写数据

一.启动相关服务

1.启动Zookeeper服务

2.启动kafka相关服务

二.代码演示（非常简单，写一个KafkaProducer）

import java.util.Properties;

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerRecord;

public class SendDataToKafka {
public static void main(String[] args) {
SendDataToKafka sendDataToKafka = new SendDataToKafka();
sendDataToKafka.send("mysqltest", "", "this is a test data too");
}

public void send(String topic,String key,String data){
Properties props = new Properties();
props.put("bootstrap.servers", "127.0.0.1:9092");
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");


KafkaProducer producer = new KafkaProducer(props);
for(int i=1;i<2;i++){
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
producer.send(new ProducerRecord(topic, ""+i, data));
}
producer.close();
}
}

运行代码即可在kafka consumer看到消息

ps:KafkaProducer类所在的包在kafka根目录lib下

示例来源于官方kafka网站http://kafka.apache.org/0102/javadoc/index.html?org/apache/kafka/clients/producer/KafkaProducer.html