kafka将消息从生产者发送到消费者kafka主题

Question

这里是Jasko，我是Kafka的新朋友。如您所见，我开发了一个“主题生产者”，这是一个简单的示例。我的目的是向客户发送JSON格式的消息。然后，我创建了第一个JSON，下一步是将其转换为消息。我将其构建为.jar格式的项目-但由于使用Kerberos系统，因此无法对其进行测试。我的代码或配置可能出问题了。我在测试时遇到问题。**

包装测试

import java.util.Properties
import org.apache.kafka.clients.producer.{KafkaProducer, ProducerConfig, ProducerRecord}


object TestKafkaProducer {
  def main(args: Array[String]): Unit = {
    val broker = "your.web.host`enter code here`:9092"
    val topic = "testTopic"

    val props = new Properties()
    //which specifies a list of host/port pairs to use for establishing the initial connection to the Kafka cluster**strong text**
    props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, broker)
    //default serialization and deserialization libraries for the record key-value pairs
    props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer")
    props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer")
    props

    val producer = new KafkaProducer[String, String](props)

    // TODO pass json object 
    def sendMessages(): Unit = {
      println("Get Object json ")
      val message = "{\"schema\":{\"type\":\"string\",\"optional\":false},\"payload\":\"foo\"}"

      while (!message.isEmpty) {
      val record = new ProducerRecord[String, String](topic, "1", message)
      producer.send(record)
      }

      producer.close()
    }

    }


}