javax.xml.parsers.DocumentBuilder support for complex types
I'm trying to put together some validation code. I am trying to validate against a schema like:
<?xml version="1.0" encoding="UTF-8"?>
<xs开发者_如何转开发d:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" xmlns:choice="http://example.com/SimpleChoice" targetNamespace="http://example.com/SimpleChoice" ecore:nsPrefix="choice" ecore:package="com.example.simple.choice">
<xsd:complexType name="Plane">
<xsd:sequence>
<xsd:element name="freightDetails" type="xsd:string" minOccurs="0"/>
<xsd:element name="passengers" type="xsd:int" minOccurs="0"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
With the following XML:
<?xml version="1.0" encoding="UTF-8"?>
<choice:Plane xmlns:choice="http://example.com/SimpleChoice">
<freightDetails>Boxes</freightDetails>
</choice:Plane>
It seems to complain that there is no element, but I'm trying to find a way to validate against the type. I get the following error:
[Error] :1:100: cvc-elt.1: Cannot find the declaration of element 'choice:Plane'.
When it tries to load the document with the following code:
SchemaFactory factory =
SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(schemaFile);
DocumentBuilderFactory parserFactory = DocumentBuilderFactory.newInstance();
parserFactory.setSchema(schema);
parserFactory.setNamespaceAware(true);
DocumentBuilder parser = parserFactory.newDocumentBuilder();
Document document = parser.parse(inputSource);
Validator validator = schema.newValidator();
validator.validate(new DOMSource(document));
It fails when it gets to the:
Document document = parser.parse(inputSource);
Does anyone have any ideas on how I would be able to get this working? (Or a validator that supports this sort of behaviour?)
Thanks
Rob
This is because your schema has defined a type (Plane
), but hasn't defined any permitted elements that use that type. A type on its own has no meaning outside of the schema itself.
You need to add an <xsd:element>
to your schema. The simplest solution is to use an anonymous complex type within that, something like:
<xsd:element name="Plane">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="freightDetails" type="xsd:string" minOccurs="0"/>
<xsd:element name="passengers" type="xsd:int" minOccurs="0"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
In your example schema, you have only defined a type named Plane
, not an element named Plane
. Add an element declaration to your schema and see what happens...
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