Sending a Message

The JmsTemplate contains many convenience methods to send a message. Send methods specify the destination by using a jakarta.jms.Destination object, and others specify the destination by using a String in a JNDI lookup. The send method that takes no destination argument uses the default destination.

The following example uses the MessageCreator callback to create a text message from the supplied Session object:

import jakarta.jms.ConnectionFactory;
import jakarta.jms.JMSException;
import jakarta.jms.Message;
import jakarta.jms.Queue;
import jakarta.jms.Session;

import org.springframework.jms.core.MessageCreator;
import org.springframework.jms.core.JmsTemplate;

public class JmsQueueSender {

	private JmsTemplate jmsTemplate;
	private Queue queue;

	public void setConnectionFactory(ConnectionFactory cf) {
		this.jmsTemplate = new JmsTemplate(cf);
	}

	public void setQueue(Queue queue) {
		this.queue = queue;
	}

	public void simpleSend() {
		this.jmsTemplate.send(this.queue, new MessageCreator() {
			public Message createMessage(Session session) throws JMSException {
				return session.createTextMessage("hello queue world");
			}
		});
	}
}

In the preceding example, the JmsTemplate is constructed by passing a reference to a ConnectionFactory. As an alternative, a zero-argument constructor and connectionFactory is provided and can be used for constructing the instance in JavaBean style (using a BeanFactory or plain Java code). Alternatively, consider deriving from Spring’s JmsGatewaySupport convenience base class, which provides pre-built bean properties for JMS configuration.

The send(String destinationName, MessageCreator creator) method lets you send a message by using the string name of the destination. If these names are registered in JNDI, you should set the destinationResolver property of the template to an instance of JndiDestinationResolver.

If you created the JmsTemplate and specified a default destination, the send(MessageCreator c) sends a message to that destination.

Using JMS Message Converters

To facilitate the sending of domain model objects, the JmsTemplate has various send methods that take a Java object as an argument for a message’s data content. The overloaded methods convertAndSend() and receiveAndConvert() methods in JmsTemplate delegate the conversion process to an instance of the MessageConverter interface. This interface defines a simple contract to conve