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POProblem with deserialization of String sent over wire with XStream
 

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  1. POProblem with deserialization of String sent over wire with XStream
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    <p>I am trying to create a simple webservice which takes a String as input and returns string as output. I am using Ecelipse Helios and Axis 2.15.</p> <ol> <li>I am writing simple WSDL for the same.</li> <li>I am generating the stubs using code generator. <blockquote> <p>New ->code generator -> java class from wsdl-> give WSDL and generates the java skeletons.</li> <li>And in the skelton I am just print the value what is coming as parameter. and returning the same value.</li> <li>I have written client code to invoke the method of the webservice. which takes a String.</li> <li>but when I am trying to invoke the method I am getting following exception and it's not hitting the webservice.</li> </ol> <p>Infact I am using XStream along with Client/WebService.</p> </blockquote></p> <p>Code goes like this for the webservice skeleton:</p> <pre><code>public com.url.pkg.ShowInputResponse showInput( com.url.pkg.ShowInput showInput) { // TODO : fill this with the necessary business logic String inputString = showInput.getInputString(); System.out.println("INput String is :\n" + inputString); XStream xStream = new XStream(); System.out.println("After XStream Declaration..."); SOVO vo = null; try { vo = (SOVO) xStream.fromXML(inputString); } catch (Throwable e) { System.out.println(e); e.printStackTrace(); } System.out.println("After SOVO casting from XML"); System.out.println(vo.getName()); System.out.println(vo.getParams()); // TODO: business logic ShowInputResponse response = new ShowInputResponse(); response.set_return(inputString); return response; } </code></pre> <p>My client code goes like this :</p> <pre><code>public static void main(String[] args) throws Exception { BasicServiceStub stub = new BasicServiceStub(); ShowInput request = new ShowInput(); SOVO sovo = new SOVO(); sovo.setName("I am the post for SO"); Map params = new HashMap(); params.put("key1", "val1"); params.put("key2", "val2"); sovo.setParams(params); XStream xStream = new XStream(); String soVoString = xStream.toXML(sovo); // System.out.println(soVoString); request.setInputString(soVoString); ShowInputResponse response = stub.showInput(request); System.out.println("...................................."); System.out.println("response = " + response.get_return()); } </code></pre> <p>SOVO is a simple POJO which is present at both client and webservice side.</p> <pre><code>public class SOVO { private String name; private Map params; public String getName() { return name; } public void setName(String name) { this.name = name; } public Map getParams() { return params; } public void setParams(Map params) { this.params = params; } } </code></pre> <p>And last but most important WSDL is here:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:ns1="http://org.apache.axis2/xsd" xmlns:ns="http://pkg.url.com" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" targetNamespace="http://pkg.url.com"&gt; &lt;wsdl:types&gt; &lt;xs:schema attributeFormDefault="qualified" elementFormDefault="qualified" targetNamespace="http://pkg.url.com"&gt; &lt;xs:element name="showInput"&gt; &lt;xs:complexType&gt; &lt;xs:sequence&gt; &lt;xs:element minOccurs="0" name="inputString" nillable="true" type="xs:string"/&gt; &lt;/xs:sequence&gt; &lt;/xs:complexType&gt; &lt;/xs:element&gt; &lt;xs:element name="showInputResponse"&gt; &lt;xs:complexType&gt; &lt;xs:sequence&gt; &lt;xs:element minOccurs="0" name="return" nillable="true" type="xs:string"/&gt; &lt;/xs:sequence&gt; &lt;/xs:complexType&gt; &lt;/xs:element&gt; &lt;/xs:schema&gt; &lt;/wsdl:types&gt; &lt;wsdl:message name="showInputRequest"&gt; &lt;wsdl:part name="parameters" element="ns:showInput"/&gt; &lt;/wsdl:message&gt; &lt;wsdl:message name="showInputResponse"&gt; &lt;wsdl:part name="parameters" element="ns:showInputResponse"/&gt; &lt;/wsdl:message&gt; &lt;wsdl:portType name="BasicServicePortType"&gt; &lt;wsdl:operation name="showInput"&gt; &lt;wsdl:input message="ns:showInputRequest" wsaw:Action="urn:showInput"/&gt; &lt;wsdl:output message="ns:showInputResponse" wsaw:Action="urn:showInputResponse"/&gt; &lt;/wsdl:operation&gt; &lt;/wsdl:portType&gt; &lt;wsdl:binding name="BasicServiceSoap11Binding" type="ns:BasicServicePortType"&gt; &lt;soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/&gt; &lt;wsdl:operation name="showInput"&gt; &lt;soap:operation soapAction="urn:showInput" style="document"/&gt; &lt;wsdl:input&gt; &lt;soap:body use="literal"/&gt; &lt;/wsdl:input&gt; &lt;wsdl:output&gt; &lt;soap:body use="literal"/&gt; &lt;/wsdl:output&gt; &lt;/wsdl:operation&gt; &lt;/wsdl:binding&gt; &lt;wsdl:binding name="BasicServiceSoap12Binding" type="ns:BasicServicePortType"&gt; &lt;soap12:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/&gt; &lt;wsdl:operation name="showInput"&gt; &lt;soap12:operation soapAction="urn:showInput" style="document"/&gt; &lt;wsdl:input&gt; &lt;soap12:body use="literal"/&gt; &lt;/wsdl:input&gt; &lt;wsdl:output&gt; &lt;soap12:body use="literal"/&gt; &lt;/wsdl:output&gt; &lt;/wsdl:operation&gt; &lt;/wsdl:binding&gt; &lt;wsdl:binding name="BasicServiceHttpBinding" type="ns:BasicServicePortType"&gt; &lt;http:binding verb="POST"/&gt; &lt;wsdl:operation name="showInput"&gt; &lt;http:operation location="BasicService/showInput"/&gt; &lt;wsdl:input&gt; &lt;mime:content type="text/xml" part="showInput"/&gt; &lt;/wsdl:input&gt; &lt;wsdl:output&gt; &lt;mime:content type="text/xml" part="showInput"/&gt; &lt;/wsdl:output&gt; &lt;/wsdl:operation&gt; &lt;/wsdl:binding&gt; &lt;wsdl:service name="BasicService"&gt; &lt;wsdl:port name="BasicServiceHttpSoap11Endpoint" binding="ns:BasicServiceSoap11Binding"&gt; &lt;soap:address location="http://localhost:8080/axis2/services/BasicService"/&gt; &lt;/wsdl:port&gt; &lt;wsdl:port name="BasicServiceHttpSoap12Endpoint" binding="ns:BasicServiceSoap12Binding"&gt; &lt;soap12:address location="http://localhost:8080/axis2/services/BasicService"/&gt; &lt;/wsdl:port&gt; &lt;wsdl:port name="BasicServiceHttpEndpoint" binding="ns:BasicServiceHttpBinding"&gt; &lt;http:address location="http://localhost:8080/axis2/services/BasicService"/&gt; &lt;/wsdl:port&gt; &lt;/wsdl:service&gt; &lt;/wsdl:definitions&gt; </code></pre> <p>And the Stack trace for the exception I must modify :</p> <p>I am not very sure if its hitting the webservice layer.</p> <pre><code>Caused by: org.apache.axis2.AxisFault: string at org.apache.axis2.util.Utils.getInboundFaultFromMessageContext(Utils.java:446) at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:371) at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:417) at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229) at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165) at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165) at com.url.pkg.BasicServiceStub.showInput(BasicServiceStub.java:184) at com.url.pkg.Client.main(Client.java:30) </code></pre> <p>It looks like more its some problem with XStream desirialization. Even though SOVO is in the classpath why its happening? Am I missing something?</p> <p>When I try sending XXXXX as string it tells:</p> <blockquote> <p>only whitespace content allowed before start tag and not X (position: START_DOCUMENT seen X... @1:1) </p> </blockquote> <p>When i try sending "some value" it says:</p> <blockquote> <p>only whitespace content allowed before start tag and not s (position: START_DOCUMENT seen s... @1:1) </p> </blockquote> <p>I am not sure what's wrong.</p>
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    1. COCan you post the WSDL and some code?
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    2. COAs @Thomas said, WSDL would be great... client code as well
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    3. COI would suggest making sure your web service is working correctly by testing it with the Web Services Explorer (Run -> bottom item.. you're using Eclipse I will assume).
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