4 Replies Latest reply on Nov 2, 2006 6:09 AM by lowecg2004

Return value for Java bean always empty

lowecg2004 Oct 20, 2006 4:54 AM

Hello,

I'm trying to set up a simple web service that returns a StockData object that has 4 properties. From my client, I can invoke the service and I can step through the method in the debugger and see that an object is created and populated. However, when the method returns at the client the object is null.

The endpoint in a JSR 181 EJB3:

Interface:

@Remote
public interface WeatherService {
 public StockData getStockData(String title);
}

Implementation:

@WebService(name = "WeatherService", targetNamespace = "http://org.test", serviceName = "WeatherService")
@SOAPBinding(style = SOAPBinding.Style.RPC)
@Stateless
@Remote(WeatherService.class)
@RemoteBinding(jndiBinding = "/ejb3/EJB3EndpointInterface")
public class WeatherServiceBean implements WeatherService {
 @WebMethod
 public StockData getStockData(final String title) {
 StockData stockData = new StockData(title, 1, 234, true);
 return stockData;
 }
}


SOAP Request:

<soapenv:Envelope
 xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
 <soapenv:Body>
 <s0:getStockData
 xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:s0="http://org.test">
 <String_1>SomeTitle</String_1>
 </s0:getStockData>
 </soapenv:Body>
</soapenv:Envelope>

SOAP Respose:

<env:Envelope
 xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
 <env:Header />
 <env:Body>
 <ns1:getStockDataResponse xmlns:ns1="http://org.test">
 <result xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" />
 </ns1:getStockDataResponse>
 </env:Body>
</env:Envelope>


The generated WSDL from calling http://dfvgm71j:8080/WebServiceEJB/WeatherServiceBean?WSDL:

<definitions name="WeatherService"
 targetNamespace="http://org.test"
 xmlns="http://schemas.xmlsoap.org/wsdl/"
 xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 xmlns:tns="http://org.test"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 <types>
 <schema elementFormDefault="qualified"
 targetNamespace="http://org.test"
 xmlns="http://www.w3.org/2001/XMLSchema"
 xmlns:soap11-enc="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:tns="http://org.test"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <complexType name="StockData">
 <sequence/>
 </complexType>
 </schema>
 </types>
 <message name="WeatherService_getStockDataResponse">
 <part name="result" type="tns:StockData"/>
 </message>
 <message name="WeatherService_getStockData">
 <part name="String_1" type="xsd:string"/>
 </message>
 <portType name="WeatherService">
 <operation name="getStockData" parameterOrder="String_1">
 <input message="tns:WeatherService_getStockData"/>
 <output message="tns:WeatherService_getStockDataResponse"/>
 </operation>
 </portType>
 <binding name="WeatherServiceBinding" type="tns:WeatherService">
 <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
 <operation name="getStockData">
 <soap:operation soapAction=""/>
 <input>
 <soap:body namespace="http://org.test" use="literal"/>
 </input>
 <output>
 <soap:body namespace="http://org.test" use="literal"/>
 </output>
 </operation>
 </binding>
 <service name="WeatherService">
 <port binding="tns:WeatherServiceBinding" name="WeatherServicePort">
 <soap:address location="http://DFVGM71J:8080/WebServiceEJB/WeatherServiceBean"/>
 </port>
 </service>
</definitions>

I can't work this out. If I change the return type to a String then my client gets the value. What am I doing wrong?

Chris.

1. Re: Return value for Java bean always empty

jason.greene Oct 26, 2006 7:34 PM (in response to lowecg2004)
The problem is that the StockData schema indicates that the javabean has no properties:

<complexType name="StockData"> <sequence/> </complexType>

Can you paste the code to StockData?

Thanks,
-Jason
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2. Re: Return value for Java bean always empty

lowecg2004 Oct 30, 2006 6:39 AM (in response to lowecg2004)

Hi Jason,

Here is the code that I had for StockData:

package org.test;

import java.io.Serializable;

public class StockData
 implements Serializable
{
 /**
 *
 */
 private static final long serialVersionUID = 1L;

 private String title;
 private int issue;
 private int value;
 private boolean hasStock;

 public StockData() {
 }

 public StockData(String title,
 int issue,
 int value,
 boolean hasStock) {
 this.title = title;
 this.issue = issue;
 this.value = value;
 this.hasStock = hasStock;
 }

 void setTitle(String title) {
 this.title = title;
 }
 String getTitle() {
 return title;
 }
 void setIssue(int issue) {
 this.issue = issue;
 }
 int getIssue() {
 return issue;
 }
 void setValue(int value) {
 this.value = value;
 }
 int getValue() {
 return value;
 }
 void setHasStock(boolean hasStock) {
 this.hasStock = hasStock;
 }
 boolean isHasStock() {
 return hasStock;
 }
}

Thanks for taking the time to help me with this,

Chris.

3. Re: Return value for Java bean always empty

jason.greene Nov 1, 2006 1:14 PM (in response to lowecg2004)

The problem is that your getters/setters aren't public.

Your data objects must be either a conformant JavaBean, or a class with public fields and a noarg constructor.

-Jason
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4. Re: Return value for Java bean always empty

lowecg2004 Nov 2, 2006 6:09 AM (in response to lowecg2004)

Oh (expletive deleted).

It was so obvious - I'd been looking at it for so long that I completely missed the basics!

Thanks for you help,

Chris.
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