I have a simple schema validator method:\[code\]// Throws runtime exception if anything goes wrong.public void validate(String schemaURL, String xml) throws Throwable { SAXParserFactory oSAXParserFactory = SAXParserFactory.newInstance(); SAXParser oSAXParser = null; oSAXParserFactory.setNamespaceAware(true); SchemaFactory oSchemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); oSAXParserFactory.setSchema(oSchemaFactory.newSchema(new URL(schemaURL))); oSAXParser = oSAXParserFactory.newSAXParser(); SaxErrorHandler handler = new SaxErrorHandler(); oSAXParser.parse(new InputSource(new StringReader(xml)),handler);}\[/code\]I have a schema hosted at \[code\]http://myserver.com/schemas/app-config/1.0/app-config-1.0.xsd\[/code\]:\[code\]<?xml version="1.0" encoding="UTF-8"?><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"> <xs:element name="application"> <xs:complexType> <xs:choice> <xs:element ref="info"/> </xs:choice> </xs:complexType> </xs:element> <xs:element name="info"> <xs:complexType> <xs:attribute name="name" type="xs:string" use="optional"/> </xs:complexType> </xs:element></xs:schema>\[/code\]Observe the follow instance of that schema:\[code\]<?xml version="1.0" encoding="UTF-8"?><application xmlns="http://myserver.com/schemas/app-config/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://myserver.com/schemas/app-config/1.0 http://myserver.com/schemas/app-config/1.0/app-config-1.0.xsd"> <info name="Dummy Application" /></application>\[/code\]When I pass my \[code\]validate\[/code\] method the following:\[code\]String xmlInstance = readXMLIntoString();String schemaURL = "http://myserver.com/schemas/app-config/1.0/app-config-1.0.xsd";validate(schemaURL, xmlInstance);\[/code\]I get the following error:\[quote\] org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'application'.\[/quote\]
- Is something wrong with my schema?
- Is something invalid with my instance?
- Is there a problem with me actually hosting the schema at the URL (although the one used in this example is a mockup, I assure you that the XSD file really is hosted at the URL I'm hitting in the code)?