Java Code Examples for com.alibaba.rocketmq.client.QueryResult#getMessageList()

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();
}
 

void queryByKey(final DefaultMQAdminExt admin, final String topic, final String key)
        throws MQClientException, InterruptedException {
    admin.start();

    QueryResult queryResult = admin.queryMessage(topic, key, 64, 0, Long.MAX_VALUE);
    System.out.printf("%-50s %4s %40s\n",//
        "#Message ID",//
        "#QID",//
        "#Offset");
    for (MessageExt msg : queryResult.getMessageList()) {
        System.out.printf("%-50s %4d %40d\n", msg.getMsgId(), msg.getQueueId(), msg.getQueueOffset());
    }
}
 

public MessageExt queryMessageByUniqKey(String topic, String uniqKey)  throws InterruptedException, MQClientException  {

        QueryResult qr = this.queryMessage(topic, uniqKey, 32,
                MessageClientIDSetter.getNearlyTimeFromID(uniqKey).getTime() - 1000, Long.MAX_VALUE, true);
        if (qr != null && qr.getMessageList() != null && qr.getMessageList().size() > 0) {
            return qr.getMessageList().get(0);
        }
        else {
            return null;
        }
    }
 

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(RemotingHelper.DEFAULT_CHARSET));// 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();
    }
 

void queryByKey(final DefaultMQAdminExt admin, final String topic, final String key)
        throws MQClientException, InterruptedException {
    admin.start();

    QueryResult queryResult = admin.queryMessage(topic, key, 64, 0, Long.MAX_VALUE);
    System.out.printf("%-50s %4s %40s%n",//
            "#Message ID",//
            "#QID",//
            "#Offset");
    for (MessageExt msg : queryResult.getMessageList()) {
        System.out.printf("%-50s %4d %40d%n", msg.getMsgId(), msg.getQueueId(), msg.getQueueOffset());
    }
}
 

void queryByKey(final DefaultMQAdminExt admin, final String topic, final String key)
        throws MQClientException, InterruptedException {
    admin.start();

    QueryResult queryResult = admin.queryMessage(topic, key, 64, 0, Long.MAX_VALUE);
    System.out.printf("%-50s %4s %40s\n", //
        "#Message ID", //
        "#QID", //
        "#Offset");
    for (MessageExt msg : queryResult.getMessageList()) {
        System.out.printf("%-50s %4d %40d\n", msg.getMsgId(), msg.getQueueId(), msg.getQueueOffset());
    }
}
 

@CmdTrace(cmdClazz = QueryMsgByKeySubCommand.class)
public Table queryMsgByKey(String topicName, String msgKey, String fallbackHours) throws Throwable {
    Throwable t = null;
    DefaultMQAdminExt defaultMQAdminExt = getDefaultMQAdminExt();
    try {
        defaultMQAdminExt.start();
        long h = 0;
        if (StringUtils.isNotBlank(fallbackHours)) {
            h = Long.parseLong(fallbackHours);
        }
        long end = System.currentTimeMillis() - (h * 60 * 60 * 1000);
        long begin = end - (6 * 60 * 60 * 1000);
        QueryResult queryResult = defaultMQAdminExt.queryMessage(topicName, msgKey, 32, begin, end);

        // System.out.printf("%-50s %-4s  %s\n",//
        // "#Message ID",//
        // "#QID",//
        // "#Offset");
        String[] thead = new String[] { "#Message ID", "#QID", "#Offset" };
        int row = queryResult.getMessageList().size();
        Table table = new Table(thead, row);

        for (MessageExt msg : queryResult.getMessageList()) {
            String[] data =
                    new String[] { msg.getMsgId(), String.valueOf(msg.getQueueId()),
                                  String.valueOf(msg.getQueueOffset()) };
            table.insertTR(data);
            // System.out.printf("%-50s %-4d %d\n", msg.getMsgId(),
            // msg.getQueueId(), msg.getQueueOffset());
        }
        return table;
    }
    catch (Throwable e) {
        logger.error(e.getMessage(), e);
        t = e;
    }
    finally {
        shutdownDefaultMQAdminExt(defaultMQAdminExt);
    }
    throw t;
}
 

public static void main(String[] args) throws MQClientException, InterruptedException {
    /**
     * 一个应用创建一个Producer，由应用来维护此对象，可以设置为全局对象或者单例<br>
     * 注意：ProducerGroupName需要由应用来保证唯一<br>
     * ProducerGroup这个概念发送普通的消息时，作用不大，但是发送分布式事务消息时，比较关键，
     * 因为服务器会回查这个Group下的任意一个Producer
     */
    DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
    /**
     * Producer对象在使用之前必须要调用start初始化，初始化一次即可<br>
     * 注意：切记不可以在每次发送消息时，都调用start方法
     */
    producer.start();

    /**
     * 下面这段代码表明一个Producer对象可以发送多个topic，多个tag的消息。
     * 注意：send方法是同步调用，只要不抛异常就标识成功。但是发送成功也可会有多种状态，<br>
     * 例如消息写入Master成功，但是Slave不成功，这种情况消息属于成功，但是对于个别应用如果对消息可靠性要求极高，<br>
     * 需要对这种情况做处理。另外，消息可能会存在发送失败的情况，失败重试由应用来处理。
     */
    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();
        }

    /**
     * 应用退出时，要调用shutdown来清理资源，关闭网络连接，从MetaQ服务器上注销自己
     * 注意：我们建议应用在JBOSS、Tomcat等容器的退出钩子里调用shutdown方法
     */
    producer.shutdown();
}