NullPointer when calling XFire service using CXF client.

[John Janes]

Hi All.

I am trying to call a working XFire set of services using a CXF client. Everything was working great until we noticed that XFire was leaving sockets in a CLOSE_WAIT state.

So I began looking for solutions for the CLOSE_WAITS and attempted subclassing the close method of the CommonsHttpMessageSender class. This however did not work and then decided to try CXF as the client to our XFire Services.

After implementing the CXF client like so:

	/**
	 * ATSMS OLMIS Manager web service log in. This MUST be called prior
	 * to running any method which requires client parameter. By calling
	 * this method a session is created on ATSMS and used until a service
	 * log off is called. 
	 * 
	 * @param  serviceURL            The web service URL.
	 * @param  loginName             The login name to authenticate with.
	 * @param  password              The password to authenticate with.
	 * 
	 * @return                       A boolean true/false if login was successful or not.
	 */
	public boolean serviceLogin() {
		boolean       srvcResponse = false;
		IOlmisManager client       = null;
	
		//	Invoke the service
			try {
				ClientProxyFactoryBean factory = new ClientProxyFactoryBean();
		    	factory.getInInterceptors().add(new LoggingInInterceptor());
		    	factory.getOutInterceptors().add(new LoggingOutInterceptor());
		    	factory.setServiceClass(IOlmisManager.class);
		    	factory.setAddress(Constants.ATSMS_SERVICE_URL);
		    	client = (IOlmisManager) factory.create();
				srvcResponse = client.serviceLogin(Constants.ATSMS_SERVICE_USERNAME, Constants.ATSMS_SERVICE_USERPSWD);
			} catch (Exception e) {
				System.out.println("WsClient.callWebService(): Exception: " + e.toString());
			}
			
		//	Return the response
			return srvcResponse;
    } 

with an interface of the following:

public interface IOlmisManager {
	
	/**
	 * ATSMS OLMIS Manager web service log in. 
	 * 
	 * @param  loginName  The login name to authenticate with.
	 * @param  password   The password to authenticate with.
	 * @return            A boolean true/false if login was successful.
	 */
	public boolean serviceLogin(String loginName, String Password);
}

I get the following returned:
INFO: Creating Service {http://ats.olmis/}IOlmisManager from class olmis.ats.IOlmisManager
Feb 1, 2011 10:09:20 AM org.apache.cxf.interceptor.AbstractLoggingInterceptor log
INFO: Outbound Message
---------------------------
ID: 1
Address: http://localhost:8080/atsms/services/OlmisManager
Encoding: UTF-8
Content-Type: text/xml
Headers: {SOAPAction=[""], Accept=[*/*]}
Payload: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns1:serviceLogin xmlns:ns1="http://ats.olmis/"><arg0 xmlns="http://ats.olmis/">olmis</arg0><arg1 xmlns="http://ats.olmis/">wEtxRPd5vUNboYYRdkkkLw==</arg1></ns1:serviceLogin></soap:Body></soap:Envelope>
--------------------------------------
Feb 1, 2011 10:09:20 AM org.apache.cxf.interceptor.AbstractLoggingInterceptor log
INFO: Inbound Message
----------------------------
ID: 1
Response-Code: 200
Encoding: UTF-8
Content-Type: text/xml;charset=UTF-8
Headers: {content-type=[text/xml;charset=UTF-8], Date=[Tue, 01 Feb 2011 18:09:20 GMT], transfer-encoding=[chunked], Set-Cookie=[JSESSIONID=67C70EBCE3EB2F73C1076BE4C66A384A; Path=/atsms], Server=[Apache-Coyote/1.1]}
Payload: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soap:Body><ns1:serviceLoginResponse xmlns:ns1="http://ws.oed.state.or.us"><ns1:out>true</ns1:out></ns1:serviceLoginResponse></soap:Body></soap:Envelope>
--------------------------------------
WsClient.callWebService(): Exception: java.lang.NullPointerException
Feb 1, 2011 10:09:21 AM org.apache.cxf.service.factory.ReflectionServiceFactoryBean buildServiceFromClass
INFO: Creating Service {http://ats.olmis/}IOlmisManager from class olmis.ats.IOlmisManager

If anyone can point me to what is wrong I would GREATLY appreciate it. If something else is needed, please let me know.

I'm sure it's something silly that I haven't done right.

Thanks!

[John Janes]

Solved the issue. It was all in the annotations of the service interface.

The fix was as follows:

/**
 * IOlmisManager is a service interface class to OlmisManagerImpl 
 * implementation class that resides in the ATSMS system and exposes 
 * ATSMS application methods needed in OLMIS.
 * 
 * @version $Revision: 1.0 $ $Date: 2010/06/25 08:49:45 $
 */
@WebService(name="IOlmisManager", targetNamespace="http://ws.oed.state.or.us")
@SOAPBinding(style=SOAPBinding.Style.DOCUMENT,
             use=SOAPBinding.Use.LITERAL,
             parameterStyle=SOAPBinding.ParameterStyle.WRAPPED)
public interface IOlmisManager {
	
	/**
	 * ATSMS OLMIS Manager web service log in. 
	 * 
	 * @param  loginName  The login name to authenticate with.
	 * @param  password   The password to authenticate with.
	 * @return            A boolean true/false if login was successful.
	 */
	@WebResult(targetNamespace="http://ws.oed.state.or.us", name="out")
	public boolean serviceLogin(String loginName, String Password);

As usual, it turned out to be something silly on my part.