[jboss-user] [JBoss Web Services] - No-arg default constructor error when deploying Web Service

[Max Korn]

Max Korn [https://community.jboss.org/people/developer251] created the discussion

"No-arg default constructor error when deploying Web Service"

To view the discussion, visit: https://community.jboss.org/message/791939#791939

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Hi all !
I'm badly stuck with a weird exception that I get when I deploy a Webservice on JBoss As 7.1.1.

The Web Service itself is simple and returns in a method a List of Counters:

@XmlRootElement
public class Counter implements Serializable {

  
 private Counter() {
   
 }
 private Counter(int price) {
           this.price = price;
   
 }
 
 private int id;
 private String desc
 private int price;
 . . . .   
}

@WebService
public class CounterWS implements CounterWSItf, Serializable {
 @Inject InfoService service;
  
 @Override
 public  List<Counter>  getCounters() {
        
   return service.getCounters();
 }

However I get the following exception once I deploy it:

*Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions*
*com.telco.model.Counter does not have a no-arg default constructor.*
*        this problem is related to the following location:*
*                at com.telco.model.Counter*
*                at private java.util.List com.telco.ws.jaxws_asm.GetCounterssResponse._return*
*                at com.telco.ws.jaxws_asm.GetCountersResponse*
        at com.sun.xml.bind.v2.runtime.IllegalAnnotationsException$Builder.check(IllegalAnnotationsException.java:106)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:466)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:298)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:141)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1157)
        at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:145)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_31]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_31]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_31]
        at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_31]
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:211) [rt.jar:1.6.0_31]
        at javax.xml.bind.ContextFinder.find(ContextFinder.java:392) [rt.jar:1.6.0_31]
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:618) [rt.jar:1.6.0_31]
        at org.apache.cxf.jaxb.JAXBContextCache.createContext(JAXBContextCache.java:260)
        at org.apache.cxf.jaxb.JAXBContextCache.getCachedContextAndSchemas(JAXBContextCache.java:169)
        at org.apache.cxf.jaxb.JAXBDataBinding.createJAXBContextAndSchemas(JAXBDataBinding.java:423)
        at org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:291)
        ... 24 more

As you can see, there is a default constructor in the Counter class. I've tried also removing the other constructor without success. 
By removing the type <Counter> from the List it actually deploys but once I invoke it from the Client, I get another type of Error, that the Counter type is unknown (!!).

Is it a bug or something else I'm missing ?
Thanks a lot
Max
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