SOAP响应返回ArrayList

Question

I wrote a very simple webservice which returns a ArrayList. when I try to test my web service using SOAPUI , the response is empty. I am deploying this application in Tomcat.

Here is my code:

@WebService(endpointInterface = "com.enterprise.ws.WebServiceInterface")
public class WebServiceImpl implements WebServiceInterface{

    @Override
    public ArrayList<String> listSample() {
        // TODO Auto-generated method stub
        ArrayList<String> arrayList = new ArrayList<String>();
        arrayList.add("1212");
        return arrayList;
    }
}

Interface :

@WebService
@SOAPBinding(style = Style.RPC)
public interface WebServiceInterface {

    @WebMethod
    ArrayList<String> listSample();

}

Here is my SOAPUI response .

Answer 1

The problem is probably caused by this JAX-B bug: https://java.net/jira/browse/JAXB-223

The problem is that if you use a JAX-WS 2.0/JAX-B 2.0 you can not use a collection class directly as a return type for a @WebMethod .

There are two possibles workarounds to avoid this issue:

One is to use an Array instead of ArrayList avoiding the use of collection class:

Interface

@WebService
@SOAPBinding(style = Style.RPC)
public interface WebServiceInterface {

    @WebMethod
    String[] listSample();
}

Implementation

@WebService(endpointInterface = "com.enterprise.ws.WebServiceInterface")
public class WebServiceImpl implements WebServiceInterface{

    @Override
    public String[] listSample() {
        return new String[]{"1212"};
    }
}

Another possible workaround is to create a POJO to wrap your ArrayList , and on the @WebMethod return the POJO type instead:

POJO class

public class PojoSample {

     private List<String> listSample;
     // create getters and setters
     ...
}

POJO Interface

@WebService
@SOAPBinding(style = Style.RPC)
public interface WebServiceInterface {

    @WebMethod
    PojoSample listSample();
}

POJO Implementation

@WebService(endpointInterface = "com.enterprise.ws.WebServiceInterface")
public class WebServiceImpl implements WebServiceInterface{

    @Override
    public PojoSample listSample() {
        List<String> arrayList = new ArrayList<String>();
        arrayList.add("1212");

        PojoSample pojo = new PojoSample();
        pojo.setListSample(arrayList);
        return pojo;
    }
}

Hope this helps,

Answer 2

I Solved that just using the code below

 @WebMethod(operationName = "listarPersonas")
public List<Persona> listarPersonas() {

    return PersonaService.PERSONAS_REGISTRADAS;
}

Just replace List instead Arraylist.

regards;

Answer 3

Try soap binding document with wrapped parameter style insted of RPC binding.

@SOAPBinding(style=Style.DOCUMENT,use=Use.LITERAL, parameterStyle=ParameterStyle.WRAPPED)

With this you can write web method with List return value, or parameter as a List:

@WebMethod
@WebResult(name = "returnName")
public List<MyBean> methodName(@WebParam(name = "paramName") List<ParamBean> paramList);