'commit'

pom.xml

@@ -278,6 +278,19 @@
             <artifactId>rocketmq-client</artifactId>
             <version>4.9.4</version>
         </dependency>
+
+        <!--引入kafak-->
+        <dependency>
+            <groupId>org.apache.kafka</groupId>
+            <artifactId>kafka-clients</artifactId>
+            <version>3.4.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.kafka</groupId>
+            <artifactId>kafka-streams</artifactId>
+            <version>3.4.0</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

src/main/java/UnitTest/KafkaTest.java

@@ -0,0 +1,85 @@
+package UnitTest;
+
+import org.apache.kafka.clients.consumer.*;
+import org.apache.kafka.common.TopicPartition;
+import org.apache.kafka.common.serialization.StringDeserializer;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.time.Duration;
+import java.util.Collections;
+import java.util.Date;
+import java.util.Map;
+import java.util.Properties;
+
+public class KafkaTest {
+
+    /**
+     * 功能：获取kafka的时间戳
+     *
+     * @param dateString
+     * @return
+     * @throws ParseException
+     */
+    public static long getKafkaTimeStamp(String dateString) throws ParseException {
+        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        Date date = sdf.parse(dateString);
+        long millis = date.getTime();
+        long kafkaTimestamp = millis / 1000;
+        return kafkaTimestamp;
+    }
+
+    public static void main(String[] args) throws ParseException {
+
+        Properties props = new Properties();
+        props.setProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "10.10.14.67:9092");
+        props.setProperty(ConsumerConfig.GROUP_ID_CONFIG, "dsideal-group");
+        props.put(ConsumerConfig.CLIENT_ID_CONFIG, "dsideal1"); // 客户端 ID，用于标识消费者
+        props.setProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());
+        props.setProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());
+
+        // 配置消费者客户端时间戳类型为server_time（服务端时间）
+        //props.setProperty(ConsumerConfig.TIMESTAMP_TYPE_CONFIG, "server_time");
+
+        KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props);
+
+        /*
+        // 订阅需要消费的Topic
+        consumer.subscribe(Collections.singletonList("test"));
+        // 消费消息
+        while (true) {
+            ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(100));
+            for (ConsumerRecord<String, String> record : records) {
+                String key = record.key();
+                String value = record.value();
+                long offset = record.offset();
+                int partition = record.partition();
+                System.out.printf("key=%s,value=%s,offset=%d,partition=%d\n", key, value, offset, partition);
+                // 处理收到的消息
+            }
+        }*/
+
+        // 关闭Consumer对象
+        //consumer.close();
+
+        Duration pollTimeout = Duration.ofMillis(100);
+        Map<TopicPartition, Long> startOffsets = Collections.singletonMap(new TopicPartition("test", 0), 1651363200000L);
+        consumer.assign(startOffsets.keySet());
+        Map<TopicPartition, OffsetAndTimestamp> offsetAndTimestamps = consumer.offsetsForTimes(startOffsets);
+        for (Map.Entry<TopicPartition, OffsetAndTimestamp> entry : offsetAndTimestamps.entrySet()) {
+            TopicPartition tp = entry.getKey();
+            OffsetAndTimestamp offsetAndTimestamp = entry.getValue();
+            if (offsetAndTimestamp != null) {
+                consumer.seek(tp, offsetAndTimestamp.offset());
+            }
+        }
+
+        while (true) {
+            ConsumerRecords<String, String> records = consumer.poll(pollTimeout);
+            for (ConsumerRecord<String, String> record : records) {
+                System.out.printf("topic=%s, partition=%s, offset=%d, timestamp=%s, key=%s, value=%s%n",
+                        record.topic(), record.partition(), record.offset(), record.timestamp(), record.key(), record.value());
+            }
+        }
+    }
+}