problem while creating xml using jdk1.6
Hi All,
I am creating an xml file and validating with schema, problem is that code is running fine with jdk1.5 but giving problem with jdk1.6(error).
Please have a glance on the following code to solve problem.
org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'Poem'.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1887)Validation UnSuccesful
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:685)
at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.beginNode(DOMValidatorHelper.java:273)
at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.validate(DOMValidatorHelper.java:240)
at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.validate(DOMValidatorHelper.java:186)
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl.validate(ValidatorImpl.java:100)
at javax.xml.validation.Validator.validate(Validator.java:127)
at src.DocWriteDOM.validateXmlDocument(DocWriteDOM.java:127)
at src.DocWriteDOM.makeDoc(DocWriteDOM.java:101)
at src.DocWriteDOM.main(DocWriteDOM.java:41)
////////////////////////////////////////////////////////////////////////
java code
public class DocWriteDOM {
public static void main(String[] av) throws IOException {
FileOutputStream os = null;
PrintStream ps = null;
try{
DocWriteDOM dw = new DocWriteDOM();
Document doc = dw.makeDoc();
TransformerFactory transfac = TransformerFactory.newInstance();
Transformer trans = transfac.newTransformer();
trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
trans.setOutputProperty(OutputKeys.INDENT, "yes");
//create string from xml tree
StringWriter sw = new StringWriter();
StreamResult result = new StreamResult(sw);
DOMSource source = new DOMSource(doc);
trans.transform(source, result);
String xmlString = sw.toString();
//print xml
// System.out.println("Here's the xml:\n\n" + xmlString);
os = new FileOutputStream(new File("Demo1.xml"));
ps = new PrintStream(os);
ps.print(xmlString);
// dw.testValidator();
}catch(Exception e){
e.printStackTrace();
}
}
/** Generate the XML document */
protected Document makeDoc() {
try {
DocumentBuilderFactory fact = DocumentBuilderFactory.newInstance();
DocumentBuilder parser = fact.newDocumentBuilder();
Document doc = parser.newDocument();
Node root = doc.createElement("Poem");
doc.appendChild(root);
Node stanza = doc.createElement("Stanza");
root.appendChild(stanza);
Node line = doc.createElement("Line");
stanza.appendChild(line);
line.appendChild(doc.createTextNode("Once, upon a midnight dreary"));
line = doc.createElement("Line");
stanza.appendChild(line);
line.appendChild(doc.createTextNode("While I pondered, weak and weary"));
this.validateXmlDocument(doc);
//System.out.println()
return doc;
} catch (Exception ex) {
System.err.println("+============================+");
System.err.println("|XML Error|");
System.err.println("+============================+");
System.err.println(ex.getClass());
System.err.println(ex.getMessage());
System.err.println("+============================+");
return null;
}
}
private boolean validateXmlDocument(Document document){
boolean isXmlDocumentValid = false;
try{
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
// load a WXS schema, represented by a Schema instance
Source schemaFile = new StreamSource(new File("Demo1.xsd"));
Schema schema = factory.newSchema(schemaFile);
// create a Validator instance, which can be used to validate an instance document
Validator validator = schema.newValidator();
// validate the DOM tree
validator.validate(new DOMSource(document));
System.out.println("Validation successful");
isXmlDocumentValid = true;
return isXmlDocumentValid;
}catch (SAXException e) {
// instance document is invalid!
e.printStackTrace();
System.out.println("Validation UnSuccesful");
}finally{
return isXmlDocumentValid;
}
}//end of method
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
Demo1.xml
<Poem>
<Stanza>
<Line>Once, upon a midnight dreary</Line>
<Line>While I pondered, weak and weary</Line>
</Stanza>
</Poem>
//////////////////////////////////////////////////////////////////
Demo1.xsd
<?xml version="1.0" encoding="ISO-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Poem">
<xs:complexType>
<xs:sequence>
<xs:element name="Stanza" minOccurs="0">
<xs:complexType>
<xs:sequence>
<xs:element name="Line" type="xs:string" minOccurs="1" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
////////////////////////////////////////////////////////////
