Apache kafka 卡夫卡制作人代码FailedToSendMessageException

使用卡夫卡生成消息

    import java.util.Date;
import java.util.Properties;

import kafka.common.FailedToSendMessageException;
import kafka.javaapi.producer.Producer;
import kafka.producer.KeyedMessage;
import kafka.producer.ProducerConfig;





public class KafkaProducer {

    private static Producer<String, String> producer;
    public KafkaProducer()
    {
        Properties props = new Properties();
        props.put("metadata.broker.list","localhost:2181");
        props.put("serializer.class", "kafka.serializer.StringEncoder");
        props.put("request.required.acks","1");

        ProducerConfig config = new ProducerConfig(props);
        producer = new Producer<String,String>(config);

    }

    public static void main(String[] args)
    {
        if(args.length<2)
        {
            System.err.println("Usage: KafkaProducer TopicName MessageCount");
            System.exit(0);
        }
        String topic = args[0];
        int messageCount = Integer.parseInt(args[1]);

        KafkaProducer kafka = new KafkaProducer();
        kafka.publishMessage(topic,messageCount);

    }

    private void publishMessage(String topic, int messageCount)
    {
        for(int mcount=0;mcount<messageCount;mcount++)
        {
            String runtime = new Date().toString();
            String msg = "Message Published Time -" + runtime;
            System.out.println(msg);

            KeyedMessage<String,String> data = new KeyedMessage<String,String>(topic,msg);
            producer.send(data);

        }
        producer.close();
    }

}

Zookeeper服务已启动，代理已启动，主题已创建。消费者也准备好了

---

有人能帮我解决这个问题吗？

您可以尝试使用中简要介绍的新卡夫卡制作人

注意导入

org.apache.kafka.clients.producer.*

而不是

kafka.javaapi.producer.producer

类似于：

import java.util.Properties;
import java.util.concurrent.ExecutionException;

import org.apache.kafka.clients.producer.*;
import org.apache.kafka.common.serialization.StringSerializer;

public class KafkaProducerTest {

    public static void main(String args[]) throws InterruptedException, ExecutionException {
        // set up Kafka producer
        KafkaProducer<String,String> kafkaProducer;
        Properties props = new Properties();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,StringSerializer.class.getName());
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,StringSerializer.class.getName());

        // instantiate the producer
        kafkaProducer = new KafkaProducer<String,String>(props);

        // add data to kafka
        ProducerRecord<String,String> producerRecord = new ProducerRecord<String,String>("topic", "test key", "test value");
        kafkaProducer.send(producerRecord);

        // close producer
        kafkaProducer.close();
    }
}

import java.util.Properties；
导入java.util.concurrent.ExecutionException；
导入org.apache.kafka.clients.producer.*；
导入org.apache.kafka.common.serialization.StringSerializer；
公开课卡夫卡普罗斯特{
公共静态void main（字符串args[]）引发InterruptedException、ExecutionException{
//设立卡夫卡制作人
卡夫卡创作者卡夫卡创作者；
Properties props=新属性（）；
put（ProducerConfig.BOOTSTRAP\u SERVERS\u CONFIG，“localhost:9092”）；
put（ProducerConfig.VALUE\u SERIALIZER\u CLASS\u CONFIG，StringSerializer.CLASS.getName（））；
put（ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG，StringSerializer.CLASS.getName（））；
//实例化生产者
卡夫卡制作人=新卡夫卡制作人（道具）；
//向卡夫卡添加数据
ProducerRecord ProducerRecord=新的ProducerRecord（“主题”、“测试键”、“测试值”）；
卡夫卡制作人发送（生产记录）；
//亲密制作人
kafkaProducer.close（）；
}
}

您能否检查您的Kafka服务器是否在producer API使用的同一端口上运行

通常，Kafka群集在端口9092上运行。如果您的设置是这种情况，请在producer配置中使用相同的端口。您的生产商正在使用端口2181。也许这是个错误

import java.util.Properties;
import java.util.concurrent.ExecutionException;

import org.apache.kafka.clients.producer.*;
import org.apache.kafka.common.serialization.StringSerializer;

public class KafkaProducerTest {

    public static void main(String args[]) throws InterruptedException, ExecutionException {
        // set up Kafka producer
        KafkaProducer<String,String> kafkaProducer;
        Properties props = new Properties();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,StringSerializer.class.getName());
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,StringSerializer.class.getName());

        // instantiate the producer
        kafkaProducer = new KafkaProducer<String,String>(props);

        // add data to kafka
        ProducerRecord<String,String> producerRecord = new ProducerRecord<String,String>("topic", "test key", "test value");
        kafkaProducer.send(producerRecord);

        // close producer
        kafkaProducer.close();
    }
}