設置activemq networkconnector時，主題消息已過期

Question

經紀人A.

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="mqtt_1" dataDirectory="${activemq.data}" persistent="true" schedulePeriodForDestinationPurge="13000" offlineDurableSubscriberTimeout="90000" offlineDurableSubscriberTaskSchedule="20000" useJmx="true">
</broker>

經紀人B.

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="mqtt_2" dataDirectory="${activemq.data}" persistent="true" schedulePeriodForDestinationPurge="13000" offlineDurableSubscriberTimeout="90000" offlineDurableSubscriberTaskSchedule="20000" useJmx="true">
    <networkConnectors>
        <networkConnector
            name="mqtt_2"
            uri="static:(tcp://BrokerA IP:61616)"
            conduitSubscriptions="false"
            dynamicOnly="true"
            prefetchSize="1"
            networkTTL="1"
            messageTTL="1"
            consumerTTL="1"
            />
        </networkConnectors> </broker>

訂閱者已連接到代理A。我向代理B發布了一條消息。

String url = "tcp://Broker B IP:61616";
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
TopicConnection tpConnection = connectionFactory.createTopicConnection();
tpConnection.start();
TopicSession tpSession = tpConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = tpSession.createTopic("a/b/c/e");
TopicPublisher topicPublisher = tpSession.createPublisher(topic);
topicPublisher.setTimeToLive(5000);

MapMessage map = tpSession.createMapMessage();
map.setString("test", "value");
topicPublisher.publish(map);

tpConnection.stop();
topicPublisher.close();
tpSession.close();
tpConnection.close();

但是，一旦向代理B發布消息，該消息就過期了

2015-01-23 16：51：41,930 | 調試| 郵件已過期ActiveMQMapMessage {commandId = 6，responseRequired = true，messageId = ID：test.local-50762-1421999415422-1：1：1：1：1，originalDestination = null，originalTransactionId = null，producerId = ID：test.local- 50762-1421999415422-1：1：1：1，目標= topic：// abce，transactionId =空，到期時間= 1421999420843，時間戳= 1421999415843，到達= 0，brokerInTime = 1421999501929，brokerOutTime = 0，相關ID =空，replyTo = null，持久性= true，類型= null，優先級= 4，groupID = null，groupSequence = 0，targetConsumerId = null，壓縮= false，userID = null，content = org.apache.activemq.util.ByteSequence @ 457096，marshalledProperties = null，dataStructure = null，redeliveryCounter = 0，大小= 0，屬性= null，readOnlyProperties = false，readOnlyBody = false，droppable = false，jmsXGroupFirstForConsumer = false} ActiveMQMapMessage {theTable = {}} | org.apache.activemq.broker.region.RegionBroker | ActiveMQ傳輸：tcp：///xxx.xxx.xxx.xxx：50763 @ 61616

刪除此代碼（ “ topicPublisher.setTimeToLive（5000）;” ）后，成功。 為什么這段代碼是問題所在？

Answer 1

topicPublisher.setTimeToLive（5000）使消息在5秒后過期。

Answer 2

它解決了問題。

activemq.xml

<plugins>
    <timeStampingBrokerPlugin/>
</plugins>