步骤2:配置Kafka消费者属性 接下来,需要配置Kafka消费者的属性,包括bootstrap.servers和client.id等。下面是一段代码示例: importorg.apache.kafka.clients.consumer.ConsumerConfig;importorg.apache.kafka.clients.consumer.KafkaConsumer;importjava.util.Properties;// 创建属性对象Propertiesprops=newProperties();// 设...
在Java 中指定 Client ID 在Java 中使用 Kafka 客户端时,我们可以通过配置来指定 Client ID。下面是一个简单的示例,演示如何在 Java 中创建一个 Kafka Producer,并指定 Client ID。 importorg.apache.kafka.clients.producer.*;importjava.util.Properties;publicclassSimpleProducer{publicstaticvoidmain(String[]args)...
public class KafkaClientIdChecker { public static void main(String[] args) { // Kafka服务器配置 Properties props = new Properties(); props.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "kafka_server:9092"); // 创建AdminClient try (AdminClient adminClient = AdminClient.create(props)) { //...
Kafka Java 客户端开发 依赖包导入 <dependency><groupId>org.apache.kafka</groupId><artifactId>kafka_2.10</artifactId><version>0.8.2.1</version></dependency><dependency><groupId>org.apache.kafka</groupId><artifactId>kafka-clients</artifactId><version>0.8.2.1</version></dependency> producer开发 p...
clientIdPrefix = "part1", topics = "${spring.kafka.consumer.topic}", groupId = "${spring.kafka.consumer.group-id}", topicPartitions = { @TopicPartition(topic = "${spring.kafka.consumer.topic}", partitions = {"1"}) }) public void partition1(ConsumerRecord<String, String> content)...
client.id:Kafka 服务器用它来识别消息源,可以是任意字符串。 max.in.flight.requests.per.connection:用来设置Producer在单个连接上能够发送的未响应请求的个数。设置此值是1表示kafka broker在响应请求之前client不能再向同一个broker发送请求。默认值为5。如果设置1,可以避免生产者发送消息乱序,虽然吞吐量降低了,但...
org.apache.kafka.common.serialization.StringDeserializergroup-id:test-group// 启动类@SpringBootApplicationpublic class DemoApplication {public static void main(String[] args) {SpringApplication.run(DemoApplication.class, args);}}// 消费者@Componentpublic class Consumer {@KafkaListener(topics = { "...
a.kafka.common.utils.AppInfoParser : Kafka startTimeMs: 1630936260413 2021-09-06 21:51:01.128 INFO 20561 --- [ad | producer-1] org.apache.kafka.clients.Metadata : [Producer clientId=producer-1] Cluster ID: R99s2cu-SoWrPuhulozybg 2021-09-06 21:51:01.153 INFO 20561 --- [nio-7780-...
Sender线程在发送消息时,会从RecordAccumulator中取出消息,并将放在RecordAccumulator中的Deque<ProducerBatch>转换成Map<nodeId, List<ProducerBatch>>,这里的nodeId是kafka节点的id。再发送给kafka之前,又会将消息封装成Map<nodeId, ClientRequest>。 请求在从Sender发往kafka时,还会被存入InFlightRequests ...
props.put("client.id", "zy_client_id"); KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props); // 订阅test1 topic consumer.subscribe(Collections.singletonList("test1")); while(true) { // 从服务器开始拉取数据 ConsumerRecords<String, String> records = consumer.poll(Duration.ofM...