RocketMq简单实用

一、producer

public class SyncProducer {
    public static void main(String[] args) throws Exception {
        // Instantiate with a producer group name.
        DefaultMQProducer producer = new DefaultMQProducer(
                "quickstart_producer") ;
        // Specify name server addresses.
        producer.setNamesrvAddr("192.168.87.130:9876;192.168.87.131:9876");
        // Launch the instance.
        producer.start();
        for (int i = 0; i < 100; i++) {
            // Create a message instance, specifying topic, tag and message
            // body.
            Message msg = new Message("TopicTest" /* Topic */, "TagA" /* Tag */,
                    ("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET));
            // Call send message to deliver message to one of brokers.
            SendResult sendResult = producer.send(msg);
            System.out.printf("%s%n", sendResult);
        }
        // Shut down once the producer instance is not longer in use.
        producer.shutdown();
    }
}

2、consumer

public class Consumer {
    public static void main(String[] args) throws InterruptedException, MQClientException {
        // Instantiate with specified consumer group name.
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("quickstart_consumer");
        // Specify name server addresses.
        consumer.setNamesrvAddr("192.168.87.130:9876;192.168.87.131:9876");
        // Subscribe one more more topics to consume.
        consumer.subscribe("TopicTest", "*");
        // Register callback to execute on arrival of messages fetched from brokers.
        consumer.registerMessageListener(new MessageListenerConcurrently() {
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                ConsumeConcurrentlyContext context) {
                System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });
        //Launch the consumer instance.
        consumer.start();
        System.out.printf("Consumer Started.%n");
    }
}