CXF returning JAXBException: object is not known to this context

[Hycel Taylor <hy...@gmail.com>]

Hello,

I'm evaluating the CXF API and I'm going through some of your examples.
I got the sample code under java_first_jaxws, working fairly quickly.
I'm trying to expand on the code with a more realistic scenario where I
will be using a custom defined POJO as a parameter in the sayHi() method.
I created a simple class called block which does nothing but accept a
string in its' constructor and allows access to the string via a getter
method (I provided my code below).  I restarted the server and then ran
the client.  When the client executes, I get the following exception:

  JAXBException: demo.hw.client.Block is not known to this context

I understand that I need to somehow register or define the Block class
so the JAXB context knows about it.  I haven't been able to determine
how to do this.  Could some one provide a code block or set of instructions
that clearly describes how this should be done so that I can successfully
execute this example using the Block class.

The code is almost identical to the code in original simple example:

public class Block implements Serializable {
  private String message;
  public Block(String message) { this.message = message; }
  public String getMessage() { return message; }
}

@WebService
public interface HelloWorld {
  public String sayHi(Block block);
}

@WebService(endpointInterface = "demo.hw.server.HelloWorld", serviceName =
"HelloWorld")
public class HelloWorldImpl implements HelloWorld {
  public String sayHi(Block block) {return "Hello " + block.getMessage(); }
}

public final class Client {
  private static String QNAME = "http://server.hw.demo/";
  private static final QName SERVICE_NAME = new QName(QNAME, "HelloWorld");
  private static final QName PORT_NAME = new QName(QNAME, "HelloWorldPort");

  private Client() {}

  public static void main(String args[]) throws Exception {
    final Service service = Service.create(SERVICE_NAME);
    final String endpointAddress = "http://localhost:9000/helloWorld";

    service.addPort(PORT_NAME, SOAPBinding.SOAP11HTTP_BINDING,
endpointAddress);

    final HelloWorld hw = service.getPort(HelloWorld.class);
    final String message = "World";
    final Block block = new Block(message);
    final String result = hw.sayHi(block);

    System.out.println(result);
  }

public class Server {
  protected Server() throws Exception {
    System.out.println("Starting Server");

    HelloWorldImpl implementor = new HelloWorldImpl();
    String address = "http://localhost:9000/helloWorld";
    Endpoint.publish(address, implementor);
  }

  public static void main(String args[]) throws Exception {
    new Server();
    System.out.println("Server ready...");

    Thread.sleep(5 * 60 * 1000);
    System.out.println("Server exiting");
    System.exit(0);
  }
}

Thank you,
Hycel
hycel1@gmail.com

Re: CXF returning JAXBException: object is not known to this context

[Daniel Kulp <dk...@apache.org>]

With JAXB, the beans basically have to:

a) have a public 0 arg constructor
b) either have public getter and setter methods or the field is public.

I think if you update the bean to meet that requirement, it might go 
better.

Dan

On Wednesday 03 October 2007, Hycel Taylor wrote:
> Hello,
>
> I'm evaluating the CXF API and I'm going through some of your
> examples. I got the sample code under java_first_jaxws, working fairly
> quickly. I'm trying to expand on the code with a more realistic
> scenario where I will be using a custom defined POJO as a parameter in
> the sayHi() method. I created a simple class called block which does
> nothing but accept a string in its' constructor and allows access to
> the string via a getter method (I provided my code below).  I
> restarted the server and then ran the client.  When the client
> executes, I get the following exception:
>
>   JAXBException: demo.hw.client.Block is not known to this context
>
> I understand that I need to somehow register or dThe code is almost 
identical to the code in original simple example:

public class Block implements Serializable {
  private String message;efine the Block class
> so the JAXB context knows about it.  I haven't been able to determine
> how to do this.  Could some one provide a code block or set of
> instructions that clearly describes how this should be done so that I
> can successfully execute this example using the Block class.
>
> The code is almost identical to the code in original simple example:
>
> public class Block implements Serializable {
>   private String message;
>   public Block(String message) { this.message = message; }
>   public String getMessage() { return message; }
> }
>
> @WebService
> public interface HelloWorld {
>   public String sayHi(Block block);
> }
>
> @WebService(endpointInterface = "demo.hw.server.HelloWorld",
> serviceName = "HelloWorld")
> public class HelloWorldImpl implements HelloWorld {
>   public String sayHi(Block block) {return "Hello " +
> block.getMessage(); } }
>
> public final class Client {
>   private static String QNAME = "http://server.hw.demo/";
>   private static final QName SERVICE_NAME = new QName(QNAME,
> "HelloWorld"); private static final QName PORT_NAME = new QName(QNAME,
> "HelloWorldPort");
>
>   private Client() {}
>
>   public static void main(String args[]) throws Exception {
>     final Service service = Service.create(SERVICE_NAME);
>     final String endpointAddress = "http://localhost:9000/helloWorld";
>
>     service.addPort(PORT_NAME, SOAPBinding.SOAP11HTTP_BINDING,
> endpointAddress);
>
>     final HelloWorld hw = service.getPort(HelloWorld.class);
>     final String message = "World";
>     final Block block = new Block(message);
>     final String result = hw.sayHi(block);
>
>     System.out.println(result);
>   }
>
> public class Server {
>   protected Server() throws Exception {
>     System.out.println("Starting Server");
>
>     HelloWorldImpl implementor = new HelloWorldImpl();
>     String address = "http://localhost:9000/helloWorld";
>     Endpoint.publish(address, implementor);
>   }
>
>   public static void main(String args[]) throws Exception {
>     new Server();
>     System.out.println("Server ready...");
>
>     Thread.sleep(5 * 60 * 1000);
>     System.out.println("Server exiting");
>     System.exit(0);
>   }
> }
>
> Thank you,
> Hycel
> hycel1@gmail.com



-- 
J. Daniel Kulp
Principal Engineer
IONA
P: 781-902-8727    C: 508-380-7194
daniel.kulp@iona.com
http://www.dankulp.com/blog