JAX-RPC: Exception

Question

Hello there
I am using currently SUN's Webservice Development Kit 1.4 and try to realise a JAX-RPC "rpc/encoded" webservice.
My applicatio is currently running if I am using a static client (stubs geenerated by wscompile). If am going forward to use a dynamic proxy client, I am getting a strange exception during the deserialization of the xml data on the client: "trailing block elements must have an id attribute". See also stack trace at the end of the messsage.
As far as I understand is that it must somewthing be with the "ArrayList" or arrays which I am using in my JavaBean which I sent from the server to the client. Here my extract from my JavaBean:
public class Article
     long id;
     Date date;
     String category;
     String title="";
     String lead="";
     List texts;
}If I am taking out the member "List texts" then it will work correctly. The list contains only Strings. I tried also to use String[] array, but this didn't help either.
So here, my questions perhaps someone has some ideas what I did wrong.
- Why does it work with the stastic client but not with the dynamic proxy?
- Does anybody know an example on the net where in JavaBeans Lists or Arrays has been used?
- Anybody an idea why this error appears? Did I something wrong?
Thank you in advance
Mark Egloff
trailing block elements must have an id attribute
     at com.sun.xml.rpc.encoding.SOAPDeserializationContext.deserializeMultiRefObjects(SOAPDeserializationContext.java:81)
     at com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:226)
     at com.sun.xml.rpc.client.dii.CallInvokerImpl.doInvoke(CallInvokerImpl.java:80)
     at com.sun.xml.rpc.client.dii.BasicCall.invoke(BasicCall.java:489)
     at com.sun.xml.rpc.client.dii.CallInvocationHandler.doCall(CallInvocationHandler.java:122)
     at com.sun.xml.rpc.client.dii.CallInvocationHandler.invoke(CallInvocationHandler.java:86)
     at $Proxy0.getArticle(Unknown Source)
     at tagesanzeiger.client.ManagerDynamicClient.main(ManagerDynamicClient.java:43)

Answer 1

Thanks for your answer... regarding the support of "List" Types, you can get a list of supportet types from here http://java.sun.com/webservices/docs/1.3/tutorial/doc/JAXRPC2.html#wp79865 As you see "list" is supported. The problem for me is that I not use directly the list as parameter from the interface, rather than this it is used "internally" in my JavaBean. I found how to declare additional types here:https://jax-rpc.dev.java.net/whitepaper/1.1/index-part1.html#3.5.1 i.e. in your config-interface.xml for the wscompile server:
<typeMappingRegistry>
     <additionalTypes>
          <class name="tagesanzeiger.data.Media"/>
     </additionalTypes>
</typeMappingRegistry>This works for the serialization later on the serverside, but the client then claims that it has no serializer. I have read somewehere that the client also supports declarative serialization of custom types, bt I did not find any example. I tried also prorgrammatically, here a hint:
http://users.skynet.be/pascalbotte/rcx-ws-doc/seiadvanced.htm
But there is no full example of custom serializer, so I tried to use the sun serializer:
com.sun.xml.rpc.encoding.ValueTypeSerializer
com.sun.xml.rpc.encoding.ObjectArraySerializerbut this ended in a NullPointerException.....
- so has anybody out there a working example with complex types in a JavaBean?
- has anyone an example of customserializer.?
Regarding books, I have one from the Sun " Java Web Services Architecture" and one from Wiley "Developing Java Web Services", but both do not show how to use the cutom serializers nor declarive options at the client side....So I hope somenone has somewhere a working example...please...
Thanks
Mark