学习笔记Kafka—— Kafka 开发环境配置及Producer API

Posted 2021-11-23 别呀

一、开发环境说明

1、创建Maven工程

1.1、开发环境

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就会自动帮我们添加依赖

二、Kafka Producer API

2.1、Producer & KafkaProducer class

2.2、KafkaProducer class

2.3、ProducerRecord class

2.4、KafkaProducer 实战

发送V消息

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();
    }
}

运行java代码，然后就可以查看了

发送KV消息：

指定Partition