我正在构建Apache Kafka消费者以订阅另一个已经运行的Kafka。现在,我的问题是,当我的制作人将消息推送到服务器时......我的消费者没有收到它们。 这里,我给生产者代码,消费者未在Apache Kafka中收到消息
Properties properties = new Properties();
properties.put("metadata.broker.list","Running kafka ip addr:9092");
properties.put("serializer.class","kafka.serializer.StringEncoder");
ProducerConfig producerConfig = new ProducerConfig(properties);
kafka.javaapi.producer.Producer<String,String> producer = new kafka.javaapi.producer.Producer<String, String>(producerConfig);
String filePath="filepath";
File rootFile= new File(filePath);
Collection<File> allFiles = FileUtils.listFiles(rootFile, CanReadFileFilter.CAN_READ, TrueFileFilter.INSTANCE);
for(File file : allFiles) {
StringBuilder sb = new StringBuilder();
sb.append(file);
KeyedMessage<String, String> message =new KeyedMessage<String, String>(TOPIC,sb.toString());
System.out.println("sending msg from producer.."+sb.toString());
producer.send(message);
}
producer.close();
这里消费代码,
properties.put("bootstrap.servers","Running zookeaper ip addr:2181");
properties.put("group.id","test-group");
properties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
properties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
properties.put("enable.auto.commit", "false");
KafkaConsumer<String, String> consumer = new KafkaConsumer<String, String>(properties);
consumer.subscribe(Collections.singletonList(topicName));
while (true) {
ConsumerRecords<String, String> records = consumer.poll(100);
for (ConsumerRecord<String, String> record : records)
{
System.out.println("topic = "+record.topic());
System.out.println("topic = "+record.partition());
System.out.println("topic = "+record.offset());
}
try {
consumer.commitSync();
} catch (CommitFailedException e) {
System.out.printf("commit failed", e) ;
}
}
我用这种依赖性:
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.11</artifactId>
<version>0.10.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>0.10.1.0</version>
</dependency>
我从该链接的所有信息:
https://kafka.apache.org/0100/javadoc/index.html?org/apache/kafka/clients/consumer/KafkaConsumer.html
当我们运行消费者时,我们没有从消费者那里得到任何通知。请给我任何想法。
试图找出问题出在哪里:关于消费者或生产者规模。为此:检查主题中的偏移量。它可以通过命令行 – Natalia
完成。您正在将它作为群集上的jar文件运行?请验证您的zookeeper端口。 –
@Natalia:我可以通过制作人发布信息。我可以看到消息号与日志大小一起增加..但偏移量不增加... –