validation error for valid xml [SWS-35]

[gregturn]

Ingo opened SWS-35 and commented

I've created a web service and i get a validation error in the log file.

DEBUG webservice.CreateDataTypesRequestEndpoint - Marshalling [javax.xml.bind.JAXBElement@1873ad9] to response payload
ERROR endpoint.PayloadValidatingInterceptor - XML validation error on response: UndeclaredPrefix: Cannot resolve 'ns2:AddressDataType' as a QName: the prefix 'ns2' is not declared.
ERROR endpoint.PayloadValidatingInterceptor - XML validation error on response: cvc-elt.4.1: The value 'ns2:AddressDataType' of attribute 'http://www.w3.org/2001/XMLSchema-instance,type' of element 'ns2:casDataType' is not a valid QName.
ERROR endpoint.PayloadValidatingInterceptor - XML validation error on response: UndeclaredPrefix: Cannot resolve 'ns2:AddressDataType' as a QName: the prefix 'ns2' is not declared.
ERROR endpoint.PayloadValidatingInterceptor - XML validation error on response: cvc-attribute.3: The value 'ns2:AddressDataType' of attribute 'xsi:type' on element 'ns2:casDataType' is not valid with respect to its type, 'QName'.
ERROR endpoint.PayloadValidatingInterceptor - XML validation error on response: cvc-complex-type.2.4.d: Invalid content was found starting with element 'ns2:firstName'. No child element is expected at this point.

The following code is my SOAP response:
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header />
SOAP-ENV:Body
<ns2:createDataTypesResponse xmlns:ns2="http://springws.cas.de">
<ns2:casDataType
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:type="ns2:AddressDataType">
ns2:key123</ns2:key>
ns2:firstNameFritz</ns2:firstName>
ns2:lastNameMeier</ns2:lastName>
</ns2:casDataType>
</ns2:createDataTypesResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

My XSD looks like this:

<?xml version="1.0" encoding="UTF-8"?>

<schema
xmlns="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormDefault="qualified"
targetNamespace="http://springws.cas.de"
xmlns:tns="http://springws.cas.de" >

<complexType name="CasDataType" >
	<sequence>
		<element name="key"		type="long"		nillable="false" minOccurs="1" maxOccurs="1"/>
	</sequence>
</complexType>

<complexType name="AddressDataType">
	<complexContent>
		<extension base="tns:CasDataType">
			<sequence>
				<element name="firstName"	nillable="true" minOccurs="0" type="string"/>
				<element name="lastName"	nillable="true" minOccurs="0" type="string"/>
			</sequence>
		</extension>
	</complexContent>
</complexType>

<complexType name="ArrayOfCasDataTypes">
	<sequence>
		<element name="casDataType" 		type="tns:CasDataType"	nillable="false" minOccurs="1" maxOccurs="unbounded"/>
	</sequence>
</complexType>

<element name="createDataTypesRequest"  type="tns:ArrayOfCasDataTypes"/>

<element name="createDataTypesResponse" type="tns:ArrayOfCasDataTypes"/>

</schema>
This code says that my xml is valid:
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants. W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(new File("schema.xsd"));
Validator validator = schema.newValidator();
validator.validate(new StreamSource(new File("payload.xml")));

---

Affects: 1.0 M1

[gregturn]

Arjen Poutsma commented

After some debugging, I've found out that this is a bug of the JAXP api's built in to the JDK.

You can fix it by making sure that you use the Xerces version of the SchemaFactory, and not the JDK internal one. The algorithm for choosing a SchemaFactory is explained at http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/validation/SchemaFactory.html#newInstance(java.lang.String). It comes down to setting the System property "javax.xml.validation.SchemaFactory:http://www.w3.org/2001/XMLSchema" to the value "org.apache.xerces.jaxp.validation.XMLSchemaFactory".

Note that just adding Xerces to your classpath won't fix this, for reasons explained at http://xerces.apache.org/xerces2-j/faq-general.html#faq-4