not able to invoke messge bean from restful webservice - web-services

Question

I am trying to create Restful Webservice as a client of Message Driven Bean, But when i invoke the restful method its giving me following error when
Connection connection = connectionFactory.createConnection();
SEVERE: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
java.lang.NullPointerException
at com.quant.ws.GetConnection.startThread(GetConnection.java:99)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
here is the following code:
// Inside class declaration
#Resource(mappedName = "jms/testFactory")
private static ConnectionFactory connectionFactory;
#Resource(mappedName = "jms/test")
private static Queue queue;
Web services Method
#GET
#Path("startThread")
#Produces("application/xml")
public String startThread()
{
try{
Connection connection = connectionFactory.createConnection(); // its line number 99
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer( queue);
Message message = session.createTextMessage();
message.setStringProperty("name", "start");
producer.send(message);
}catch(JMSException e){
System.out.println(e);
}
return "<data>START</data>";
}
Do i need to specify anything in sun-web.xml or web.xml ?

Answer 1

I think it depends on your applicationserver setup. Did you inject the connectionFactory somewhere above? Or did a context lookup?

Answer 2

connectionFactory is null. It needs to be initialised somehow.

Answer 3

I have solved it by replacing following code
try{
InitialContext ctx = new InitialContext();
queue = (Queue) ctx.lookup("jms/test");
QueueConnectionFactory factory =
(QueueConnectionFactory) ctx.lookup("jms/testFactory");
Connection connection = factory.createConnection();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer( queue);
Message message = session.createTextMessage();
message.setStringProperty("name", "start");
producer.send(message);
}
catch(NamingException e){
System.out.println(e);
}
catch(JMSException e){
System.out.println(e);
}