Kafka消费者JavaAPI Kafka生产者JavaAPI

package cn.edu360.kafka;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Properties;

import kafka.consumer.Consumer;

import kafka.consumer.ConsumerConfig;

import kafka.consumer.KafkaStream;

import kafka.javaapi.consumer.ConsumerConnector;

import kafka.message.MessageAndMetadata;

public class ConsumerDemo {

private static final String topic = “test888”;

private static final Integer threads = 2;

public static void main(String[] args) {

Properties props = new Properties();
props.put("zookeeper.connect", "node-1.xiaoniu.com:2181,node-2.xiaoniu.com:2181,node-3.xiaoniu.com:2181");
props.put("group.id", "vvvvv");
//smallest重最开始消费,largest代表重消费者启动后产生的数据才消费
props.put("auto.offset.reset", "smallest");

ConsumerConfig config = new ConsumerConfig(props);
ConsumerConnector consumer =Consumer.createJavaConsumerConnector(config);
Map<String, Integer> topicCountMap = new HashMap<String, Integer>();
topicCountMap.put(topic, threads);
Map<String, List<KafkaStream<byte[], byte[]>>> consumerMap = consumer.createMessageStreams(topicCountMap);
List<KafkaStream<byte[], byte[]>> streams = consumerMap.get(topic);

for(final KafkaStream<byte[], byte[]> kafkaStream : streams){
new Thread(new Runnable() {

public void run() {
for(MessageAndMetadata<byte[], byte[]> mm : kafkaStream){
String msg = new String(mm.message());
System.out.println(msg);
}
}
}).start();
}
}

}

————————————–生产者——————————————-

package cn.edu360.kafka;

import java.util.Properties;

import kafka.javaapi.producer.Producer;

import kafka.producer.KeyedMessage;

import kafka.producer.ProducerConfig;

public class ProducerDemo {

public static void main(String[] args) {
Properties props = new Properties();
props.put("metadata.broker.list", "node-1.xiaoniu.com:9092,node-2.xiaoniu.com:9092,node-3.xiaoniu.com:9092");
props.put("serializer.class", "kafka.serializer.StringEncoder");
ProducerConfig config = new ProducerConfig(props);
Producer<String, String> producer = new Producer<String, String>(config);
for (int i = 1001; i <= 1100; i++)
producer.send(new KeyedMessage<String, String>("test888", "xiaoniu" + i));
}

}