Spring JMS(ActiveMQ) delayed delivery of messages

问题:

We're trying to set a delay on some JMS messages, so that a message will only be added to the queue/ received by the listener after x time. So far we've tried 2 approaches that didn't work.

1) According to the spring documentation, we can set the delivery delay on the JMSTemplate. This is the sample code we tried:

@Autowired private JmsTemplate jmsTemplate;  ... long deliveryDelay = ...; this.jmsTemplate.setDeliveryDelay(deliveryDelay); this.jmsTemplate.convertAndSend(                     queue.getName(),                     event); ... 

However, we get the following exception, even though our spring jms version is 4.0.5:

java.lang.IllegalStateException: setDeliveryDelay requires JMS 2.0 

2) We also tried setting the delay on the message itself, but it looks like the delay was ignored, and the message was delivered immediately anyway.

@Component public class MyMessageConverter implements MessageConverter {  ...  @Override public Message toMessage(Object eventObject, Session session) throws JMSException, MessageConversionException {  ... long deliveryDelay = ...; objectMessage.setLongProperty(                   ScheduledMessage.AMQ_SCHEDULED_DELAY,                   deliveryDelay); return objectMessage; } } 

The jmsTemplate definition in the spring xml:

<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">     <property name="connectionFactory" ref="cachingConnectionFactory" />     <property name="messageConverter" ref="myMessageConverter" />     <property name="sessionTransacted" value="true" /> </bean> 

Does anyone has any suggestions on what the problems are / other ideas on how to achieve delayed messaging? Thanks!

回答1:

The comments give the answer. By default scheduled message support is disabled. You must enabled it in the broker XML configuration file as mentioned on the documentation page.

An example Broker tag with scheduler support enabled:

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="localhost" dataDirectory="${activemq.data}" schedulerSupport="true"> 

回答2:

Also according to method from ActiveMQ BrokerService class you should configure persistence to have ability to use scheduler functionality.

public boolean isSchedulerSupport() {     return this.schedulerSupport && (isPersistent() || jobSchedulerStore != null); } 

回答3:

  jmsTemplate.convertAndSend(destination, message, new MessagePostProcessor() {             @Override             public Message postProcessMessage(Message message) throws JMSException {                 message.setIntProperty("JMS_OracleDelay", 200);                 return message;             }         }); 

回答4:

The JMS 2.0 is not supported in the activemq package. Try using artemis instead. Try replacing the package name from

    <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-activemq</artifactId>         <version>1.5.6.RELEASE</version>      </dependency> 

into

    <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-artemis</artifactId>         <version>1.5.6.RELEASE</version>      </dependency> 

and also add in the application.properties

    spring.artemis.mode=native     spring.artemis.host=localhost     spring.artemis.port=61616     spring.artemis.user=admin     spring.artemis.password=admin 

Follow this article

回答5:

broker-url: vm://embedded?broker.persistent=true&broker.useShutdownHook=false&broker.schedulerSupport=true 

文章来源: Spring JMS(ActiveMQ) delayed delivery of messages