一、開發環境說明
1、創建Maven工程
1.1、開發環境
Maven && JDK
1.2、Pom配置
Compiler Configuration
在pom.xml添加：
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>2.3.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
然后IDEA就會自動幫我們添加依賴
二、Kafka Producer API
2.1、Producer & KafkaProducer class
2.2、KafkaProducer class
2.3、ProducerRecord class
2.4、KafkaProducer 實戰
發送V訊息
package demo01;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.protocol.types.Field;
import java.util.HashMap;
import java.util.Map;
public class SimpleProducer {
public static void main(String[] args){
String topic = "test_02_02";
Map<String,Object> kafkaProperties = new HashMap<>();
kafkaProperties.put("bootstrap.servers", "node100:9092,node101:9092,node102:9092");
kafkaProperties.put("acks", "all");
kafkaProperties.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
kafkaProperties.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
Producer<String, String> producer = new KafkaProducer<>(kafkaProperties);
for (int i = 0; i < 100; i++)
producer.send(new ProducerRecord<>(topic, Integer.toString(i)));
producer.close();
}
}
運行java代碼，然后就可以查看了
發送KV訊息：
指定Partition
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