import org.apache.kafka.clients.consumer.*; import org.apache.kafka.common.TopicPartition; import java.time.Duration; import java.util.Collections; import java.util.Properties; public class KafkaConsumerExample { public static void main(String[] args) { String bootstrapServers = "localhost:9092"; ...
packagecom.example.rabbittest;importorg.apache.kafka.clients.consumer.ConsumerRecord;importorg.apache.kafka.clients.consumer.ConsumerRecords;importorg.apache.kafka.clients.consumer.KafkaConsumer;importorg.apache.kafka.common.serialization.StringDeserializer;importjava.time.Duration;importjava.util.Arrays;importjava...
步骤一:创建 KafkaConsumer 实例 首先,我们需要创建一个 KafkaConsumer 实例。KafkaConsumer 是用于从 Kafka 中拉取消息的主要类。 importorg.apache.kafka.clients.consumer.KafkaConsumer;importorg.apache.kafka.clients.consumer.ConsumerConfig;importjava.util.Properties;Propertiesprops=newProperties();props.put(Consum...
消费者代码KafkaConsumerExample.java: packagecom.bijian.test;importorg.apache.kafka.clients.consumer.ConsumerRecord;importorg.apache.kafka.clients.consumer.ConsumerRecords;importorg.apache.kafka.clients.consumer.KafkaConsumer;importjava.util.Arrays;importjava.util.Properties;publicclassKafkaConsumerExample {public...
To run the consumer and producer example, use the following steps: Fork/Clone the repository to your development environment. Install Java JDK 8 or higher. This was tested with Oracle Java 8, but should work under things like OpenJDK as well. ...
越多的partitions意味着可以容纳更多的consumer,有效提升并发消费的能力。 3.3 Message Message消息:是通信的基本单位,每个 producer 可以向一个 topic(主题)发布一些消息。 Kafka中的Message是以topic为基本单位组织的,不同的topic之间是相互独立的。每个topic又可以分成几个不同的partition(每个topic有几个partition是在...
import org.apache.kafka.clients.consumer.*; import org.apache.kafka.common.TopicPartition; import java.time.Duration; import java.util.Collections; import java.util.Properties; public class SingleThreadConsumerExample { public static void main(String[] args) { // Kafka consumer configuration Propertie...
@ComponentpublicclassConsumer{//调用预处理方法@KafkaListener(topics="jing-test",groupId="jing-test")publicvoidgeojsonProcess(String message){try{log.info("接收消息成功:{}:",message);message=message.replace("\"","").replace("\"","");//c1DExampleFc.addGeojson(message);System.out.println(...
import kafka.javaapi.consumer.ConsumerConnector; import kafka.message.Message; import kafka.message.MessageAndMetadata; public class ConsumerSample { public static void main(String[] args) { // specify some consumer properties Properties props = new Properties(); ...
Kafka java example 2016-03-16 08:13 In last blog we have learned how to install Kafka in Linux. We also know how to run a producer and a consumer in commandline. In this tutorial I will show you produce and consume message with apache kafka client. ...