1. maven依赖包
|
1
2
3
4
5
|
<dependency>
<groupid>org.apache.kafka</groupid>
<artifactid>kafka-clients</artifactid>
<version>0.9.0.1</version>
</dependency>
|
2. 生产者代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
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