Kafka简单使用

package com.hgc.center.accounts.test;

import java.util.Collections;
import java.util.Properties;

import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.kafka.common.serialization.StringSerializer;

public class KafkaUtils {

/**
* 生产者 发送消息
* @param topic 通道名称
* @param kafkaUrl kafka地址,多个地址用逗号隔开 127.0.1.2:9002,127.0.1.3:9002,
* @param msg 发送的信息
*/
public static void send(String topic,String kafkaUrl,String msg) {
Properties p = new Properties();
p.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaUrl);
p.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
p.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
KafkaProducer<String, String> kafkaProducer = new KafkaProducer<>(p);
try {
ProducerRecord<String, String> record = new ProducerRecord<String, String>(topic, msg);
kafkaProducer.send(record);
System.out.println("消息发送成功:" + msg);
} finally {
kafkaProducer.close();
}
}

/**
* 消费者代码
* @param topic
* @param kafkaUrl
*/
public static void Consumer(String topic,String kafkaUrl) {
Properties p = new Properties();
p.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaUrl);
p.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
p.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
p.put(ConsumerConfig.GROUP_ID_CONFIG,topic);
KafkaConsumer<String, String> kafkaConsumer = new KafkaConsumer<String, String>(p);
kafkaConsumer.subscribe(Collections.singletonList(topic));// 订阅消息
while (true) {
ConsumerRecords<String, String> records = kafkaConsumer.poll(100);
for (ConsumerRecord<String, String> record : records) {
System.out.println(String.format("topic:%s,offset:%d,消息:%s", //
record.topic(), record.offset(), record.value()));
}
}
}

}

 

 

 

//POM包

<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>0.10.2.0</version>
</dependency>