SpringCloud+Nacos简单示例

package com.yb.kafka.consumer.three.config; import org.apache.kafka.clients.admin.AdminClient; import org.apache.kafka.clients.admin.CreateTopicsResult; import org.apache.kafka.clients.admin.NewTopic; import org.apache.kafka.clients.consumer.ConsumerConfig; import org.apache.kafka.clients.producer.ProducerConfig; import org.apache.kafka.common.serialization.IntegerDeserializer; import org.apache.kafka.common.serialization.IntegerSerializer; import org.apache.kafka.common.serialization.StringDeserializer; import org.apache.kafka.common.serialization.StringSerializer; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.kafka.annotation.EnableKafka; import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory; import org.springframework.kafka.core.*; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import java.util.Properties; import java.util.concurrent.ExecutionException; @Configuration @EnableKafka public class KafkaConfig { @Bean ConcurrentKafkaListenerContainerFactory<Integer, String> kafkaListenerContainerFactory() { ConcurrentKafkaListenerContainerFactory<Integer, String> factory = new ConcurrentKafkaListenerContainerFactory<>(); factory.setConsumerFactory(consumerFactory()); return factory; } @Bean public ConsumerFactory<Integer, String> consumerFactory() { return new DefaultKafkaConsumerFactory<>(consumerConfigs()); } @Bean public Map<String, Object> consumerConfigs() { Map<String, Object> props = new HashMap<>(); props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092"); props.put(ConsumerConfig.GROUP_ID_CONFIG, "test"); props.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, true); props.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, "100"); props.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, "15000"); props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, IntegerDeserializer.class); props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); return props; } @Bean public ProducerFactory<String, String> producerFactory() { return new DefaultKafkaProducerFactory<>(producerConfigs()); } @Bean public Map<String, Object> producerConfigs() { Map<String, Object> props = new HashMap<>(); props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092"); props.put(ProducerConfig.RETRIES_CONFIG, 0); props.put(ProducerConfig.BATCH_SIZE_CONFIG, 16384); props.put(ProducerConfig.LINGER_MS_CONFIG, 1); props.put(ProducerConfig.BUFFER_MEMORY_CONFIG, 33554432); props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, IntegerSerializer.class); props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class); return props; } @Bean public KafkaTemplate<String, String> kafkaTemplate() { System.out.println("init"); return new KafkaTemplate(producerFactory()); } public static void main(String[] args) { //创建topic Properties props = new Properties(); props.put("bootstrap.servers", "localhost:9092"); AdminClient adminClient = AdminClient.create(props); ArrayList<NewTopic> topics = new ArrayList<NewTopic>(); NewTopic newTopic = new NewTopic("topic-test", 1, (short) 1); topics.add(newTopic); CreateTopicsResult result = adminClient.createTopics(topics); try { result.all().get(); } catch (InterruptedException e) { e.printStackTrace(); } catch (ExecutionException e) { e.printStackTrace(); } } }