消息推送系统

// 创建Kafka主题示例

bin/kafka-topics.sh --create --topic 教务通知 --bootstrap-server localhost:9092 --partitions 3 --replication-factor 1

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// 使用Java代码订阅Kafka主题

Properties props = new Properties();

props.put("bootstrap.servers", "localhost:9092");

props.put("group.id", "教育组");

props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");

KafkaConsumer consumer = new KafkaConsumer<>(props);

consumer.subscribe(Arrays.asList("教务通知"));

while (true) {

ConsumerRecords records = consumer.poll(Duration.ofMillis(100));

for (ConsumerRecord record : records)

System.out.printf("Offset = %d, Key = %s, Value = %s%n", record.offset(), record.key(), record.value());

}

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