JAXB: Child Element Returning from WebServiceTemplate is null

Question

I am using string-ws to create webservice client and fetching data from the webservice. I have used org.jvnet.jaxb2.maven2:maven-jaxb2-plugin to generate the java classes. Some of the classes are given below generated by this plugin:

GetLandingPageFAQ:

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "getLandingPageFAQ", propOrder = {
    "faq"
})
public class GetLandingPageFAQ {

    protected FaqListInBean faq;

    public FaqListInBean getFaq() {
        return faq;
    }

    public void setFaq(FaqListInBean value) {
        this.faq = value;
    }
}

FaqListInBean:

import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "faqListInBean", propOrder = {
    "viewList",
    "localList",
    "numberOfContent"
})
public class FaqListInBean {

    @XmlElement(nillable = true)
    protected List viewList;
    @XmlElement(nillable = true)
    protected List localList;
    protected int numberOfContent;

    public List getViewList() {
        if (viewList == null) {
            viewList = new ArrayList();
        }
        return this.viewList;
    }

    public List getLocalList() {
        if (localList == null) {
            localList = new ArrayList();
        }
        return this.localList;
    }

    public int getNumberOfContent() {
        return numberOfContent;
    }

    public void setNumberOfContent(int value) {
        this.numberOfContent = value;
    }    
}

GetLandingPageFAQResponse:

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "getLandingPageFAQResponse", propOrder = {
    "faqListOutBean"
})
public class GetLandingPageFAQResponse {

    @XmlElement(name = "FaqListOutBean", namespace = "omitted")
    protected FaqListOutBean faqListOutBean;

    public FaqListOutBean getFaqListOutBean() {
        return faqListOutBean;
    }

    public void setFaqListOutBean(FaqListOutBean value) {
        this.faqListOutBean = value;
    }
}

The WSDL is:

The xsd is:

I am generating the Java classes by hitting the URL directly and I don't have the xsd or the jaxb binding file added to my project. Here is how I am generating it:


    org.jvnet.jaxb2.maven2
    maven-jaxb2-plugin
    0.12.3
    
        
            faq--api-service
            generate-sources
            
                generate
            
            
                WSDL
                src/main/java
                package
                true
                true
                
                    
                        url
                    
                
                
                    -Xannotate
                
                
                    
                        org.jvnet.jaxb2_commons
                        jaxb2-basics-annotate
                        1.0.1

The ObjectFactory class is:

import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.XmlElementDecl;
import javax.xml.bind.annotation.XmlRegistry;
import javax.xml.namespace.QName;

@XmlRegistry
public class ObjectFactory {

    private final static QName _WsException_QNAME = new QName("omitted", "WsException");
    private final static QName _FaqListInBean_QNAME = new QName("omitted", "FaqListInBean");
    private final static QName _FaqListOutBean_QNAME = new QName("omitted", "FaqListOutBean");
    private final static QName _GetLandingPageFAQ_QNAME = new QName("omitted", "getLandingPageFAQ");
    private final static QName _GetLandingPageFAQResponse_QNAME = new QName("omitted", "getLandingPageFAQResponse");

    public ObjectFactory() {
    }

    public WsException createWsException() {
        return new WsException();
    }

    public FaqListInBean createFaqListInBean() {
        return new FaqListInBean();
    }

    public FaqListOutBean createFaqListOutBean() {
        return new FaqListOutBean();
    }

    public GetLandingPageFAQ createGetLandingPageFAQ() {
        return new GetLandingPageFAQ();
    }

    public GetLandingPageFAQResponse createGetLandingPageFAQResponse() {
        return new GetLandingPageFAQResponse();
    }


    @XmlElementDecl(namespace = "omitted", name = "WsException")
    public JAXBElement createWsException(WsException value) {
        return new JAXBElement(_WsException_QNAME, WsException.class, null, value);
    }

    @XmlElementDecl(namespace = "omitted", name = "FaqListInBean")
    public JAXBElement createFaqListInBean(FaqListInBean value) {
        return new JAXBElement(_FaqListInBean_QNAME, FaqListInBean.class, null, value);
    }

    @XmlElementDecl(namespace = "omitted", name = "FaqListOutBean")
    public JAXBElement createFaqListOutBean(FaqListOutBean value) {
        return new JAXBElement(_FaqListOutBean_QNAME, FaqListOutBean.class, null, value);
    }

    @XmlElementDecl(namespace = "omitted", name = "getLandingPageFAQ")
    public JAXBElement createGetLandingPageFAQ(GetLandingPageFAQ value) {
        return new JAXBElement(_GetLandingPageFAQ_QNAME, GetLandingPageFAQ.class, null, value);
    }

    @XmlElementDecl(namespace = "omitted", name = "getLandingPageFAQResponse")
    public JAXBElement createGetLandingPageFAQResponse(GetLandingPageFAQResponse value) {
        return new JAXBElement(_GetLandingPageFAQResponse_QNAME, GetLandingPageFAQResponse.class, null, value);
    }
}

Now the client that I have written is:

public class FaqApiServiceClient extends WebServiceGatewaySupport {

    public FaqApiServiceClient() {
        try {
            String uri = getFaqUri();
            setDefaultUri(uri);
        } catch (IOException ex) {
            throw new ClientInstantiationException(ex);
        }
    }

    public GetLandingPageFAQResponse getLandingPageFAQResponse() {
        ObjectFactory objectFactory = new ObjectFactory();
        GetLandingPageFAQ faq = new GetLandingPageFAQ();
        FaqListInBean bean = objectFactory.createFaqListInBean();
        bean.getLocalList().add("en_US");
        faq.setFaq(bean);
        JAXBElement request = new ObjectFactory().createGetLandingPageFAQ(faq);
        @SuppressWarnings("unchecked")
        JAXBElement response = (JAXBElement) getWebServiceTemplate().marshalSendAndReceive(request);
        return response.getValue();
    }

    private String getUri() throws IOException {
        InputStream stream = getClass().getClassLoader().getResourceAsStream("wsdl-url.properties");
        Properties properties = new Properties();
        properties.load(stream);
        return properties.getProperty("FaqAPIService.WSDL");
    }
}

Now the object GetLandingPageFAQResponse which is returing is not null but I cannot find the child objects FaqListOutBean. From SoapUI when I am executing the same operating with same input data I can see there is output. I am unable to find what is wrong. Any suggestion would be very helpful. I have followed the tutorial from here: Consuming a SOAP web service.

Update

If I don't use the JAXBElement to send the request and pass the GetLandingPageFAQ instance directly then I am getting:

org.springframework.ws.client.core.support.WebServiceGatewaySupport.getWebServiceTemplate()
marshalSendAndReceive
Exception in thread "main" org.springframework.oxm.MarshallingFailureException: JAXB marshalling exception; nested exception is javax.xml.bind.MarshalException
 - with linked exception:
[com.sun.istack.internal.SAXException2: unable to marshal type "GetLandingPageFAQ" as an element because it is missing an @XmlRootElement annotation]

Tapas Bose · Accepted Answer

The issue is with the namespace & endpoint of the webservice that I was consuming. I checked the code of the webservice and then the issue got fixed.

JAXB: Child Element Returning from WebServiceTemplate is null

Update

Answers (1)

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