1、kafkaclient版本1.0.1

public class MutiThreadScheduleTask {@Resource
private KafkaConsumer<String, String> kafkaConsumer;public void test(String topic) {//查询 topic partitionsList<TopicPartition> topicPartitionList = new ArrayList<>();List<PartitionInfo> partitionInfoList = kafkaConsumer.partitionsFor(topic);for (PartitionInfo partitionInfo : partitionInfoList) {TopicPartition topicPartition = new TopicPartition(partitionInfo.topic(), partitionInfo.partition());topicPartitionList.add(topicPartition);}//查询总偏移量Map<Integer, Long> endOffsetMap = new HashMap<>();Map<TopicPartition, Long> endOffsets = kafkaConsumer.endOffsets(topicPartitionList);for (TopicPartition partitionInfo : endOffsets.keySet()) {endOffsetMap.put(partitionInfo.partition(), endOffsets.get(partitionInfo));}//查询消费消费偏移量Map<Integer, Long> commitOffsetMap = new HashMap<>();for (TopicPartition topicAndPartition : topicPartitionList) {OffsetAndMetadata committed = kafkaConsumer.committed(topicAndPartition);commitOffsetMap.put(topicAndPartition.partition(), committed.offset());}}
}

2、这部分测试代码和真正的消费端不在一个程序内，连接kafka时随便配置了一个groupId，然后kafkaConsumer.committed(topicAndPartition)一直为null。后来groupId改成和消费者一致时能成功查到。

注意：千万不要在另外一个服务以上面这种方式查询，要不然会创建一个消费者，但是没有消费代码。