Receiving Messages Synchronously
Receiving messages synchronously works much in the same way that
sending a message works in that they both use the JmsTemplate class. When receiving messages
synchronously the application receiver class blocks until a message is
received from the queue or topic. Like the send methods on the JmsTemplate, there are two forms of receive methods; receive and receiveAndConvert. The receive method returns a JMS Message object, whereas
the receiveAndConvert method returns
a Java Object corresponding to the
type of JMS Message object received.
Like the send method, you can use a
default destination or specify the JNDI name or JMS destination directly
in the receive method
itself.
The receiver timeout value allows you to control the amount of
time the application receiver should wait before receiving a message.
The default value is 0, indicating that the receiver should block and
wait forever until a message is received. The receiver timeout value can
be specified through the receiveTimeout property on the JmsTemplate bean. This
property takes a long value
containing of the receive timeout in milliseconds. For example,
receivers using the JmsTemplate
defined here will stop waiting for messages after 30 seconds:
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate"> <property name="connectionFactory" ref="queueConnectionFactory"/> <property name="destinationResolver" ref="destinationResolver"/> <property name="defaultDestinationName" value="queue1"/> ...