瑕佸湪Java涓疄鐜癒afka娑堟伅鐨勫彂閫佸拰鎺ユ敹锛屼綘闇€瑕佷娇鐢↘afka鎻愪緵鐨凧ava瀹㈡埛绔簱銆備互涓嬫槸涓€涓畝鍗曠殑绀轰緥锛屽睍绀哄浣曚娇鐢↗ava鍙戦€佸拰鎺ユ敹Kafka娑堟伅銆?/p>

鍙戦€佹秷鎭細

import org.apache.kafka.clients.producer.*;

import java.util.Properties;

public class KafkaProducerExample {
    public static void main(String[] args) {
        String bootstrapServers = "localhost:9092";
        String topic = "my-topic";
        String key = "my-key";
        String value = "Hello, Kafka!";

        // 璁剧疆Kafka鐢熶骇鑰呯殑閰嶇疆灞炴€?/span>
        Properties properties = new Properties();
        properties.put("bootstrap.servers", bootstrapServers);
        properties.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
        properties.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

        // 鍒涘缓Kafka鐢熶骇鑰?/span>
        Producer<String, String> producer = new KafkaProducer<>(properties);

        // 鍒涘缓瑕佸彂閫佺殑娑堟伅
        ProducerRecord<String, String> record = new ProducerRecord<>(topic, key, value);

        // 鍙戦€佹秷鎭?/span>
        producer.send(record, new Callback() {
            @Override
            public void onCompletion(RecordMetadata metadata, Exception exception) {
                if (exception != null) {
                    System.err.println("Failed to send message: " + exception.getMessage());
                } else {
                    System.out.println("Message sent successfully! Topic: " + metadata.topic() +
                            ", Partition: " + metadata.partition() +
                            ", Offset: " + metadata.offset());
                }
            }
        });

        // 鍏抽棴鐢熶骇鑰?/span>
        producer.close();
    }
}

鎺ユ敹娑堟伅锛?/p>

import org.apache.kafka.clients.consumer.*;

import java.util.Collections;
import java.util.Properties;

public class KafkaConsumerExample {
    public static void main(String[] args) {
        String bootstrapServers = "localhost:9092";
        String topic = "my-topic";

        // 璁剧疆Kafka娑堣垂鑰呯殑閰嶇疆灞炴€?/span>
        Properties properties = new Properties();
        properties.put("bootstrap.servers", bootstrapServers);
        properties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
        properties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
        properties.put("group.id", "my-group");

        // 鍒涘缓Kafka娑堣垂鑰?/span>
        Consumer<String, String> consumer = new KafkaConsumer<>(properties);

        // 璁㈤槄瑕佹秷璐圭殑涓婚
        consumer.subscribe(Collections.singletonList(topic));

        // 寰幆鎺ユ敹娑堟伅
        while (true) {
            ConsumerRecords<String, String> records = consumer.poll(100);
            for (ConsumerRecord<String, String> record : records) {
                System.out.println("Received message: " +
                        "Topic: " + record.topic() +
                        ", Partition: " + record.partition() +
                        ", Offset: " + record.offset() +
                        ", Key: " + record.key() +
                        ", Value: " + record.value());
            }
        }
    }
}

鍦ㄤ笂闈㈢殑绀轰緥涓紝鎴戜滑浣跨敤Kafka鐨凱roducer绫诲彂閫佹秷鎭紝骞朵娇鐢↘afka鐨凜onsumer绫绘帴鏀舵秷鎭€備负浜嗚繛鎺ュ埌Kafka闆嗙兢锛屾垜浠渶瑕佹寚瀹欿afka闆嗙兢鐨勫湴鍧€锛坆ootstrap.servers锛夈€傛垜浠繕闇€瑕佹寚瀹氭秷鎭敭鍜屽€肩殑搴忓垪鍖栫▼搴忥紝浠ョ‘淇濆畠浠兘澶熸纭湴琚獽afka澶勭悊銆?/p>

鍦ㄥ彂閫佹秷鎭殑绀轰緥涓紝鎴戜滑棣栧厛鍒涘缓浜嗕竴涓狿roducerRecord瀵硅薄锛岃瀵硅薄鍖呭惈瑕佸彂閫佺殑涓婚銆侀敭鍜屽€笺€傜劧鍚庯紝鎴戜滑浣跨敤Producer鐨剆end()鏂规硶鍙戦€佽娑堟伅锛屽苟鍦ㄥ洖璋冧腑澶勭悊鍙戦€佺粨鏋溿€?/p>

鍦ㄦ帴鏀舵秷鎭殑绀轰緥涓紝鎴戜滑棣栧厛鍒涘缓浜嗕竴涓狢onsumer瀵硅薄锛屽苟浣跨敤subscribe()鏂规硶璁㈤槄瑕佹秷璐圭殑涓婚銆傜劧鍚庯紝鎴戜滑浣跨敤poll()鏂规硶浠嶬afka闆嗙兢涓幏鍙栨秷鎭紝骞朵娇鐢╢oreach寰幆澶勭悊姣忔潯娑堟伅銆?/p>

閫氳繃杩欎簺绀轰緥锛屼綘鍙互鍦↗ava涓疄鐜癒afka娑堟伅鐨勫彂閫佸拰鎺ユ敹銆備綘鍙互鏍规嵁鑷繁鐨勯渶姹傝繘琛岃繘涓€姝ョ殑鎵╁睍鍜屽畾鍒躲€?/p>