本文主要向大家介绍了【云计算】kafkaApI的简单使用，通过具体的内容向大家展现，希望对大家学习云计算有所帮助。

kafka生产者

public class Producer {
    public static void main(String[] args) {
        Properties props=new Properties();
        props.put("bootstrap.servers","bigdata-pro-001:9092,bigdata-pro-002:9092,bigdata-pro-003:9092");
        props.put("retries",0);
        props.put("key.serializer","org.apache.kafka.common.serialization.StringSerializer");
        props.put("value.serializer","org.apache.kafka.common.serialization.StringSerializer");
        KafkaProducer producer = new KafkaProducer<>(props);
        for (int i = 0; i < 3000; i++) {
            producer.send(new ProducerRecord("test",Integer.toString(i),Integer.toString(i)));
        }
        System.out.println("发送成功");
        producer.close();
    }
}

kafka 消费者

package kfk.example;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import java.util.Collections;
import java.util.Properties;
public class Consumer {
    public static void main(String[] args) {
        Properties props=new Properties();
        props.put("bootstrap.servers","192.168.130.16:9092");
        props.put("group.id","tp");
        props.put("enable.auto.commit","true");
        props.put("auto.commit.interval.ms","100");
        props.put("auto.offset.reset","earliest");
        props.put("key.deserializer","org.apache.kafka.common.serialization.StringDeserializer");
        props.put("value.deserializer","org.apache.kafka.common.serialization.StringDeserializer");
        KafkaConsumer consumer = new KafkaConsumer<>(props);
        consumer.subscribe(Collections.singletonList("test"));
        System.out.println("Subscribed to topic"+"test");
        int i=0;
        while(true){
            ConsumerRecords recods=consumer.poll(100);
            for (ConsumerRecord record:recods){
                System.out.printf("offset = %d,key= %s,value=%s\n",record.offset(),record.key(),record.value());
            }
        }
    }
}

kafka pom.xml

    4.0.0

    com.aura
    kafka
    1.0-SNAPSHOT
    
    
        
        
            org.apache.kafka
            kafka_2.12
            0.10.2.0
        
    
    
        Producer
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.7.0
                
                    1.8
                    1.8
                
            
            
                org.apache.maven.plugins
                maven-jar-plugin
                3.0.2
                
                    

                        
                            true
                            false
                            /
                            kfk.example.Producer
                        
                    
                
            
        
    

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