Java Message类代码示例

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args){
	DefaultMQPushConsumer consumer =
			new DefaultMQPushConsumer("PushConsumer");
	consumer.setNamesrvAddr("127.0.0.1:9876");
	try {
		//订阅PushTopic下Tag为push的消息
		consumer.subscribe("PushTopic", "push");
		//程序第一次启动从消息队列头取数据
		consumer.setConsumeFromWhere(
				ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
		consumer.registerMessageListener(
				new MessageListenerConcurrently() {
					public ConsumeConcurrentlyStatus consumeMessage(
							List<MessageExt> list,
							ConsumeConcurrentlyContext Context) {
						Message msg = list.get(0);
						System.out.println(msg.toString());
						return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
					}
				}
		);
		consumer.start();
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args) {
	DefaultMQProducer producer = new DefaultMQProducer("Producer");
	producer.setNamesrvAddr("127.0.0.1:9876");
	try {
		producer.start();
		long time = System.currentTimeMillis();
		System.out.println("开始：" + time);
		for (int i = 1; i <= 100000; i ++) {
			Message msg = new Message("PushTopic", "push", i + "", "Just for test.".getBytes());
			SendResult result = producer.send(msg);
			//System.out.println("id:" + result.getMsgId() + " result:" + result.getSendStatus());
		}
		System.out.println("结束，消耗：" + (System.currentTimeMillis() - time));
	} catch (Exception e) {
		e.printStackTrace();
	} finally {
		producer.shutdown();
	}
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
/**
 * Validate message
 *
 * @param msg
 * @param defaultMQProducer
 * @throws com.alibaba.rocketmq.client.exception.MQClientException
 */
public static void checkMessage(Message msg, DefaultMQProducer defaultMQProducer)
        throws MQClientException {
    if (null == msg) {
        throw new MQClientException(ResponseCode.MESSAGE_ILLEGAL, "the message is null");
    }
    // topic
    Validators.checkTopic(msg.getTopic());
    // body
    if (null == msg.getBody()) {
        throw new MQClientException(ResponseCode.MESSAGE_ILLEGAL, "the message body is null");
    }

    if (0 == msg.getBody().length) {
        throw new MQClientException(ResponseCode.MESSAGE_ILLEGAL, "the message body length is zero");
    }

    if (msg.getBody().length > defaultMQProducer.getMaxMessageSize()) {
        throw new MQClientException(ResponseCode.MESSAGE_ILLEGAL,
                "the message body size over max value, MAX: " + defaultMQProducer.getMaxMessageSize());
    }
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
@Override
public LocalTransactionState executeLocalTransactionBranch(final Message msg, final Object arg) {
    int value = transactionIndex.getAndIncrement();

    if (value == 0) {
        throw new RuntimeException("Could not find db");
    }
    else if ((value % 5) == 0) {
        return LocalTransactionState.ROLLBACK_MESSAGE;
    }
    else if ((value % 4) == 0) {
        return LocalTransactionState.COMMIT_MESSAGE;
    }

    return LocalTransactionState.UNKNOW;
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args) throws MQClientException, InterruptedException {
    DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
    producer.start();
    for (int i = 0; i < 1; i++)
        try {
            {
                Message msg = new Message("TopicTest1",// topic
                    "TagA",// tag
                    "key113",// key
                    ("Hello MetaQ").getBytes());// body
                SendResult sendResult = producer.send(msg);
                System.out.println(sendResult);

                QueryResult queryMessage =
                        producer.queryMessage("TopicTest1", "key113", 10, 0, System.currentTimeMillis());
                for (MessageExt m : queryMessage.getMessageList()) {
                    System.out.println(m);
                }
            }

        }
        catch (Exception e) {
            e.printStackTrace();
        }
    producer.shutdown();
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args) throws MQClientException, InterruptedException {
        DefaultMQProducer producer = new DefaultMQProducer("yyzGroup2");
        producer.setNamesrvAddr("10.2.223.157:9876;10.2.223.158:9876;10.2.223.159:9876");
       // producer.setNamesrvAddr("10.2.223.228:9876");
        producer.start();
        for(int i = 0; i < 111111; ++i) {
//            Thread.currentThread().sleep(50);
//            for (String item : array) {
            Message msg = new Message("yyztest2",// topic
                    "TAG",// tag
                    "ffff",// 注意， msgkey对帮助业务排查消息投递问题很有帮助，请设置成和消息有关的业务属性，比如订单id ,商品id .
                    "yang ya zhou".getBytes());// body //默认会设置等待消息存储成功。
            SendResult sendResult = null;
            try {//同步发送消息 ，并且等待消息存储成功，超时时间3s .
                System.out.println("send msg with msgKey:" + msg.getKeys());
                sendResult = producer.send(msg); //DefaultMQProducer.send
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println(sendResult);
            Thread.sleep(300);
        }
        System.out.println(System.getProperty("user.home") );
        producer.shutdown();
    }
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args) throws MQClientException, InterruptedException {
    DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
    producer.start();

    try {
        for (int i = 0; i < 6000000; i++) {
            Message msg = new Message("TopicFilter7",// topic
                "TagA",// tag
                "OrderID001",// key
                ("Hello MetaQ").getBytes());// body

            msg.putUserProperty("SequenceId", String.valueOf(i));

            SendResult sendResult = producer.send(msg);
            System.out.println(sendResult);
        }
    }
    catch (Exception e) {
        e.printStackTrace();
    }

    producer.shutdown();
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args) {
    DefaultMQProducer producer = new DefaultMQProducer("Producer");
    producer.setNamesrvAddr("127.0.0.1:9876");
    try {
        producer.start();
        long time = System.currentTimeMillis();
        System.out.println("开始：" + time);

        int a = 100000;

        for (int i = 1; i <= a; i++) {
            Message msg = new Message("PushTopic", "push", i + "", "Just for test.".getBytes());
            SendResult result = producer.send(msg);
            System.out.println("id:" + result.getMsgId() + " result:" + result.getSendStatus());
        }
        System.out.println("结束，消耗：" + (System.currentTimeMillis() - time));
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        producer.shutdown();
    }
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
@Override
protected void writeImpl(PacketFuture pf) throws Exception {
    InsPacket packet = pf.send();
    LOG.info("write packet-{}", packet);

    packet.type(InsPacket.Type.GROUP.ordinal());
    ByteBuffer bytes = codec(packet.version()).encode(packet);
    String topic = packet.ins().toGroup().name();
    List<Co> toCo = packet.ins().toCo();
    if (toCo.isEmpty()) {
        Message multicast = new Message(topic, name(), packet.ins().id(), bytes.array());
        send(multicast, pf);
    } else {
        for (Co co : toCo) {
            Message unicast = new Message(topic, String.valueOf(co.hashCode()), packet.ins().id(), bytes.array());
            send(unicast, pf);
        }
    }
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
@Test
public void testScheduledMessageProducer() throws Exception {
    // Instantiate a producer to send scheduled messages
    DefaultMQProducer producer = new DefaultMQProducer("ExampleProducerGroup");
    // Launch producer
    producer.start();
    int totalMessagesToSend = 100;
    for (int i = 0; i < totalMessagesToSend; i++) {
        Message message = new Message("TestTopic", ("Hello scheduled message " + i).getBytes());
        // This message will be delivered to consumer 10 seconds later.
        message.setDelayTimeLevel(3);
        // Send the message
        producer.send(message);
    }

    // Shutdown producer after use.
    producer.shutdown();
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
@Test
public void testSyncProducer() throws Exception {
    // Instantiate with a producer group name.
    DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
    // 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) /* Message body */
        );
        // 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();
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
@Test
public void testAsyncProducer() throws Exception {
    // Instantiate with a producer group name.
    DefaultMQProducer producer = new DefaultMQProducer("ExampleProducerGroup");
    // Launch the instance.
    producer.start();
    producer.setRetryTimesWhenSendAsyncFailed(0);
    for (int i = 0; i < 100; i++) {
        final int index = i;
        // Create a message instance, specifying topic, tag and message body.
        Message msg = new Message("TopicTest", "TagA", "OrderID188", "Hello world".getBytes(RemotingHelper.DEFAULT_CHARSET));
        producer.send(msg, new SendCallback() {
            @Override
            public void onSuccess(SendResult sendResult) {
                System.out.printf("%-10d OK %s %n", index, sendResult.getMsgId());
            }

            @Override
            public void onException(Throwable e) {
                System.out.printf("%-10d Exception %s %n", index, e);
                e.printStackTrace();
            }
        });
    }
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
@Test
public void testOnewayProducer() throws Exception {
    // Instantiate with a producer group name.
    DefaultMQProducer producer = new DefaultMQProducer("ExampleProducerGroup");
    // 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) /* Message body */
        );
        // Call send message to deliver message to one of brokers.
        producer.sendOneway(msg);

    }
    // Shut down once the producer instance is not longer in use.
    producer.shutdown();
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
public static void main(String[] args) throws MQClientException, InterruptedException {
    DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
    producer.start();
    for (int i = 0; i < 1; i++)
        try {
            {
                Message msg = new Message("TopicTest",// topic
                    "TagA",// tag
                    "OrderID188",// key
                    ("Hello MetaQ").getBytes());// body

                SendResult sendResult = producer.send(msg);
                System.out.println(sendResult);
            }

        }
        catch (Exception e) {
            e.printStackTrace();
        }

    producer.setInstanceName("");
    producer.setProducerGroup("");

    producer.shutdown();
}
 

import com.alibaba.rocketmq.common.message.Message; //导入依赖的package包/类
protected Message serializer(Event event){
	
	Map<String,String> headers = event.getHeaders();
	String tempTopic = topic;
	
	if(RocketMQSinkConstants.DEFAULT_TOPIC.equals(tempTopic))
		topic = getHeader(headers,RocketMQSinkConstants.PRODUCER_TOPIC,tempTopic);
	String eventkeys = getHeader(headers,RocketMQSinkConstants.MESSAGE_KEYS,keys);
	String eventtags = getHeader(headers,RocketMQSinkConstants.MESSAGE_TAGS,tags);
	byte[] body = event.getBody();
	
    if (logger.isDebugEnabled()) {
        logger.debug("{Event} " + topic + " : " + eventkeys + " : "+ eventtags + " : "
          + new String(body));
        
      }
	
	Message msg = new Message(topic,eventtags,eventkeys,body);

	return msg;
}