String>record=newProducerRecord<>(topic,key,value);// 发送消息producer.send(record,(metadata,exception)->{if(exception!=null){// 处理发送异常exception.printStackTrace();}else{// 输出发送成功的信息System.out.println("Sent message to topic: "+metadata.topic()+", partition: "+metadata.partition...
[2017-05-07 23:17:16,240] ERROR Error when sending message to topic topicin050511 with key: null, value: 0 bytes with error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback) org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms. 把Kafka...
28 ConsumerRecords<String, String> records = consumer.poll(100); 29 //Consumer message 30 for (ConsumerRecord<String, String> record : records) { 31 //Send message to every client 32 for (WebSocket webSocket :wbSockets){ 33 webSocket.sendMessage(record.value()); 34 } 35 } 36 }catch (...
Table 1. SendKafkaMessage function parameters Parameter Format Description DataSource String Name of Kafka data source to send the message to. Topic String Name of the Kafka topic to send. Key Object Key of the Kafka message. Value Object ...
监听方法加上@SendTo注解 KafkaConfiguration.class 这里我们为监听容器工厂(ConcurrentKafkaListenerContainerFactory)配置一个ReplyTemplate,ReplyTemplate是我们用来转发消息所使用的类。 @SendTo注解本质其实就是利用这个ReplyTemplate转发监听方法的返回值到对应的Topic中, ...
kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic topic_ozdemo # 开启消费者方式二,从头消费,不按照偏移量消费 kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic topic_ozdemo --from-beginning # 测试 curl http://127.0.0.1/ozdemo/kafka -d "message send to ...
kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic topic_ozdemo # 开启消费者方式二,从头消费,不按照偏移量消费 kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic topic_ozdemo --from-beginning # 测试 curl http://127.0.0.1/ozdemo/kafka -d "message send to ...
调用 send 方法,发送消息 for (int i = 0; i < 5; i++) { RecordMetadata recordMetadata = kafkaProducer.send(new ProducerRecord<>("kafka-test", "syncMessage-" + i)).get(); System.out.println("send response result,topic:" + recordMetadata.topic() + ", " + " 分区:" + record...
1、 kafka topic /bin/kafka-topics.sh--zookeeper192.168.6.102:2181--alter--topic testTopic--configmax.message.bytes=52428800 2、server.properties中添加 message.max.bytes=5242880(5M) replica.fetch.max.bytes=6291456(6M)每个分区试图获取的消息字节数。要大于等于message.max.bytes ...
messageorderonthe brokerornot. *///保证消息的顺序性的标记private final boolean guaranteeMessageOrder;/* the maximum requestsizetoattempttosendtothe server *///对应的配置是max.request.size,代表调用send()方法发送的最大请求大小private finalintmaxRequestSize;/* the numberofacknowledgementstorequestfrom...