在网上碰到的问题，想了下使用现有的API还是可以实现的。
首先，需要引入Kafka服务器端代码，比如加入Kafka 1.0.0依赖：
Maven
<dependency> <groupId>org.apache.kafka</groupId> <artifactId>kafka_2.12</artifactId> <version>1.0.0</version></dependency>
Gradle
compile group: 'org.apache.kafka', name: 'kafka_2.12', version: '1.0.0'
然后编写获取订阅某topic的所有group的方法，代码如下：
/** * get all subscribing consumer group names for a given topic * @param brokerListUrl localhost:9092 for instance * @param topic topic name * @return */ public static Set<String> getAllGroupsForTopic(String brokerListUrl, String topic) { AdminClient client = AdminClient.createSimplePlaintext(brokerListUrl); try { List<GroupOverview> allGroups = scala.collection.JavaConversions.seqAsJavaList(client.listAllGroupsFlattened().toSeq()); Set<String> groups = new HashSet<>(); for (GroupOverview overview: allGroups) { String groupID = overview.groupId(); Map<TopicPartition, Object> offsets = scala.collection.JavaConversions.mapAsJavaMap(client.listGroupOffsets(groupID)); Set<TopicPartition> partitions = offsets.keySet(); for (TopicPartition tp: partitions) { if (tp.topic().equals(topic)) { groups.add(groupID); } } } return groups; } finally { client.close(); } }转载于:https://www.cnblogs.com/huxi2b/p/7831787.html
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