Apache CXF with JMS Example
Apache CXF is a popular Java web services framework that supports a variety of protocols, including Java Message Service (JMS). Here's an example of how to use Apache CXF with JMS:
First, you need to set up a JMS broker. Apache ActiveMQ is a popular open-source JMS broker that you can use for testing purposes. You can download it from the Apache ActiveMQ website.
Create a new Maven project and add the following dependencies to your project's pom.xml file:
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-jms</artifactId>
<version>${cxf.version}</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-all</artifactId>
<version>${activemq.version}</version>
</dependency>
Replace ${cxf.version} and ${activemq.version} with the latest versions of CXF and ActiveMQ, respectively.
- Create a new interface for your JMS service, for example:
@WebService
@SOAPBinding(style = Style.RPC)
public interface MyService {
@WebMethod
void sendMessage(String message);
}
- Create a new implementation class for your JMS service, for example:
@WebService(endpointInterface = "com.example.MyService")
public class MyServiceImpl implements MyService {
@Override
public void sendMessage(String message) {
// TODO: Send JMS message
}
}
- Configure CXF to use JMS by adding the following to your application context file (e.g. applicationContext.xml):
<jaxws:endpoint id="myService"
implementor="com.example.MyServiceImpl"
address="/myService">
<jaxws:properties>
<entry key="org.apache.cxf.transport.jms.JMSConfigFeature.enabled" value="true"/>
<entry key="org.apache.cxf.transport.jms.JMSConfigFeature.connectionFactory" value="ConnectionFactory"/>
<entry key="org.apache.cxf.transport.jms.JMSConfigFeature.targetDestination" value="queue:myQueue"/>
</jaxws:properties>
</jaxws:endpoint>
This configuration enables CXF's JMSConfigFeature, which allows you to specify the JMS connection factory and destination for your service. In this example, we're using a JMS queue named "myQueue".
- In your implementation class, you can use CXF's JMS Transport API to send JMS messages:
import org.apache.cxf.transport.jms.JMSMessageHeadersType;
import org.apache.cxf.transport.jms.JMSConstants;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.handler.MessageContext;
@WebService(endpointInterface = "com.example.MyService")
public class MyServiceImpl implements MyService {
@Resource
private WebServiceContext context;
@Override
public void sendMessage(String message) {
MessageContext messageContext = context.getMessageContext();
JMSMessageHeadersType headers = new JMSMessageHeadersType();
headers.setJMSCorrelationID("correlationId");
headers.setJMSDeliveryMode(2);
headers.setJMSPriority(5);
headers.setTimeToLive(10000);
headers.setProperty("MyCustomProperty", "MyCustomValue");
messageContext.put(JMSConstants.JMS_CLIENT_REQUEST_HEADERS, headers);
ConnectionFactory cf = (ConnectionFactory) messageContext.get(JMSConstants.JMS_CONNECTION
