com.alibaba.rocketmq.client.producer.TransactionMQProducer Java Examples

public static void main(String[] args) throws MQClientException, InterruptedException {

        //事务决断处理类
        TransactionCheckListener transactionCheckListener = new TransactionCheckListenerImpl();
        TransactionMQProducer producer = new TransactionMQProducer("please_rename_unique_group_name");
        producer.setCheckThreadPoolMinSize(2);
        producer.setCheckThreadPoolMaxSize(2);
        producer.setCheckRequestHoldMax(2000);
        producer.setTransactionCheckListener(transactionCheckListener);
        producer.start();

        String[] tags = new String[] { "TagA", "TagB", "TagC", "TagD", "TagE" };
        TransactionExecuterImpl tranExecuter = new TransactionExecuterImpl();
        for (int i = 0; i < 100; i++) {
            try {
                Message msg =
                        new Message("TopicTest", tags[i % tags.length], "KEY" + i,
                            ("Hello RocketMQ " + i).getBytes());
                SendResult sendResult = producer.sendMessageInTransaction(msg, tranExecuter, null);
                System.out.println(sendResult);

                Thread.sleep(10);
            }
            catch (MQClientException e) {
                e.printStackTrace();
            }
        }

        for (int i = 0; i < 100000; i++) {
            Thread.sleep(1000);
        }

        producer.shutdown();

    }
 

@PostConstruct
private void init() throws MQClientException
{
	if (transaction == null || transactionExecuter == null)
	{
		DefaultMQProducer defaultProducer = new DefaultMQProducer();
		// Producer 组名， 多个 Producer 如果属于一 个应用，发送同样的消息，则应该将它们 归为同一组
		defaultProducer.setProducerGroup(ProducerGroupName);
		// Name Server 地址列表
		defaultProducer.setNamesrvAddr(NamesrvAddr);
		// 生产者名称
		defaultProducer.setInstanceName(InstanceName);
		// 超时时间
		defaultProducer.setSendMsgTimeout(SendMsgTimeout);
		defaultProducer.start();
		producer = defaultProducer;
	}
	else
	{
		TransactionMQProducer transactionProducer = new TransactionMQProducer();
		// Producer 组名， 多个 Producer 如果属于一 个应用，发送同样的消息，则应该将它们 归为同一组
		transactionProducer.setProducerGroup(ProducerGroupName);
		// Name Server 地址列表
		transactionProducer.setNamesrvAddr(NamesrvAddr);
		// 生产者名称
		transactionProducer.setInstanceName(InstanceName);
		// 超时时间
		transactionProducer.setSendMsgTimeout(SendMsgTimeout);
		transactionProducer.setCheckThreadPoolMinSize(checkThreadPoolMinSize);
		transactionProducer.setCheckThreadPoolMaxSize(checkThreadPoolMaxSize);
		transactionProducer.setCheckRequestHoldMax(checkRequestHoldMax);
		transactionProducer.setTransactionCheckListener(transaction);
		transactionProducer.start();
		producer = transactionProducer;
	}

}
 

public static void main(String[] args) throws MQClientException, InterruptedException {

        TransactionCheckListener transactionCheckListener = new TransactionCheckListenerImpl();
        TransactionMQProducer producer = new TransactionMQProducer("please_rename_unique_group_name");
        // 事务回查最小并发数
        producer.setCheckThreadPoolMinSize(2);
        // 事务回查最大并发数
        producer.setCheckThreadPoolMaxSize(2);
        // 队列数
        producer.setCheckRequestHoldMax(2000);
        producer.setTransactionCheckListener(transactionCheckListener);
        producer.start();

        String[] tags = new String[] { "TagA", "TagB", "TagC", "TagD", "TagE" };
        TransactionExecuterImpl tranExecuter = new TransactionExecuterImpl();
        for (int i = 0; i < 100; i++) {
            try {
                Message msg = new Message("TopicTest", tags[i % tags.length], "KEY" + i,
                    ("Hello RocketMQ " + i).getBytes());
                SendResult sendResult = producer.sendMessageInTransaction(msg, tranExecuter, null);
                System.out.println(sendResult);

                Thread.sleep(10);
            }
            catch (MQClientException e) {
                e.printStackTrace();
            }
        }

        for (int i = 0; i < 100000; i++) {
            Thread.sleep(1000);
        }

        producer.shutdown();

    }
 

/**
 *  发送数据到MQ方法  
 * 
 * @param Topic   队列名称
 * @param Tags	     标签名称
 * @param body	  发送的数据  推荐 JSOM 或者 XML 结构
 * @param Encoding  数据编码格式  默认UTF-8
 * @return   响应信息进行了内部处理  确认已经保存到 MQ 并且    日志已经记录  只要值不是NULL 就是成功发送
 * @throws UnsupportedEncodingException  转换字符集出错  请检查是否可以转换 
 */
public SendResult send(String Topic, String Tags, String body, String Encoding)
		throws UnsupportedEncodingException
{

	String loggerString = MessageFormat.format(
			"将要发送到Mq的数据    Topic={0}   Tags={1}   body={2}  Encoding={3} ", Topic, Tags, body,
			Encoding);

	if (Encoding == null || "".equals(Encoding))
	{
		Encoding = "UTF-8";
	}

	if (Tags == null || "".equals(Tags))
	{
		Tags = "*";
	}

	LOGGER.info(loggerString);

	Message me = new Message();
	// 标示
	me.setTopic(Topic);
	// 标签
	me.setTags(Tags);
	// 内容
	me.setBody(body.getBytes(Encoding));
	// 发送信息到MQ SendResult 是当前发送的状态 官方说 不出异常 就是成功
	SendResult sendResult = null;
	try
	{
		if (producer instanceof TransactionMQProducer)
		{
			sendResult = ((TransactionMQProducer) producer).sendMessageInTransaction(me,
					transactionExecuter, null);

		}
		else
		{
			sendResult = ((DefaultMQProducer) producer).send(me);
		}
	}
	catch (Exception e)
	{
		LOGGER.error(" 发送 数据给MQ出现异常  " + loggerString, e);
	}
	// 当消息发送失败时如何处理 getSendStatus 获取发送的状态
	if (sendResult == null || sendResult.getSendStatus() != SendStatus.SEND_OK)
	{
		LOGGER.info(loggerString + "发送消息失败" + " MQ状态值  SendResult=" + sendResult);
		sendResult = null;
	}
	LOGGER.info("发送到MQ成功" + sendResult);
	return sendResult;
}