How to parse XML against XSD,DTD, etc.. locally (no internet connection) ?

Question

i've searched on how to parse xml against xsd,dtd,etc.. without the needs of internet connection..
but unfortunately, only the xsd file can be set locally and still there needs the internet connection for the other features, properties.
XML: GML file input from gui
XSD: input from gui
javax.xml
package demo;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.XMLConstants;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.xml.sax.SAXException;
public class Sample1WithJavaxXML {
     public static void main(String[] args) {
          URL schemaFile = null;
          try {
               //schemaFile = new URL("http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd");
               File file0 = new File("AppSchema-C01-v1_0.xsd");
               schemaFile = new URL(file0.toURI().toString());
          } catch (MalformedURLException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
          //Source xmlFile = new StreamSource(new File("web.xml"));
          Source xmlFile = new StreamSource(new File("C01.xml"));
          SchemaFactory schemaFactory = SchemaFactory
              .newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
          //File file1 = new File("XMLSchema.dtd");
          //SchemaFactory schemaFactory = SchemaFactory
               //.newInstance("javax.xml.validation.SchemaFactory:XMLSchema.dtd");
          Schema schema = null;
          try {
               schema = schemaFactory.newSchema(schemaFile);
          } catch (SAXException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
          Validator validator = schema.newValidator();
          try {
            validator.validate(xmlFile);
            System.out.println(xmlFile.getSystemId() + " is valid");
          } catch (SAXException e) {
            System.out.println(xmlFile.getSystemId() + " is NOT valid");
            System.out.println("Reason: " + e.getLocalizedMessage());
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
}Xerces
package demo;
import java.io.File;
import java.util.Date;
import org.apache.xerces.parsers.DOMParser;
public class SchemaTest {
     private String xmlFile = "";
     private String xsdFile = "";
     public SchemaTest(String xmlFile, String xsdFile) {
          this.xmlFile = xmlFile;
          this.xsdFile = xsdFile;
     public static void main (String args[]) {
          File file0 = new File("AppSchema-C01-v1_0.xsd");
          String xsd = file0.toURI().toString();
          SchemaTest testXml = new SchemaTest("C01.xml",xsd);
          testXml.process();
     public void process() {
          File docFile = new File(xmlFile);
          DOMParser parser = new DOMParser();
          try {
               parser.setFeature("http://xml.org/sax/features/validation", true);
               parser.setFeature("http://apache.org/xml/features/validation/schema", true);
               parser.setProperty("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",
                         xsdFile);
               ErrorChecker errors = new ErrorChecker();
               parser.setErrorHandler(errors);
               System.out.println(new Date().toString() + " START");
               parser.parse(docFile.toString());
          } catch (Exception e) {
               System.out.print("Problem parsing the file.");
               System.out.println("Error: " + e);
               System.out.println(new Date().toString() + " ERROR");
               return;
          System.out.println(new Date().toString() + " END");
}

Answer 1

Thanks a lot Sir DrClap..
I tried to use and implement the org.w3c.dom.ls.LSResourceResolver Interface which is based on the SAX2 EntityResolver.
please give comments the way I implement it. Here's the code:
LSResourceResolver Implementation
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;
import abc.xml.XsdConstant.Path.DTD;
import abc.xml.XsdConstant.Path.XSD;
public class LSResourceResolverImpl implements LSResourceResolver {
     public LSResourceResolverImpl() {
      * {@inheritDoc}
     @Override
     public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
          ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
          LSInput input = new LSInputImpl(publicId, systemId, baseURI);
          if ("http://www.w3.org/2001/xml.xsd".equals(systemId)) {
               input.setByteStream(classLoader.getResourceAsStream(XSD.XML));
          } else if (XsdConstant.PUBLIC_ID_XMLSCHEMA.equals(publicId)) {
               input.setByteStream(classLoader.getResourceAsStream(DTD.XML_SCHEMA));
          } else if (XsdConstant.PUBLIC_ID_DATATYPES.equals(publicId)) {
               input.setByteStream(classLoader.getResourceAsStream(DTD.DATATYPES));
          return input;
}I also implement org.w3c.dom.ls.LSInput
import java.io.InputStream;
import java.io.Reader;
import org.w3c.dom.ls.LSInput;
public class LSInputImpl implements LSInput {
     private String publicId;
     private String systemId;
     private String baseURI;
     private InputStream byteStream;
     private String stringData;
     public LSInputImpl(String publicId, String systemId, String baseURI) {
          super();
          this.publicId = publicId;
          this.systemId = systemId;
          this.baseURI = baseURI;
     //getters & setters
}Then, here's the usage/application:
I create XMLChecker class (SchemaFactory implementation is Xerces)
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.xml.XMLConstants;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import abc.xml.XsdConstant.Path.XSD;
public class XMLChecker {
     private ErrorMessage errorMessage = new ErrorMessage();
     public boolean validate(String filePath){
          final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
          List<Source> schemas = new ArrayList<Source>();
          schemas.add(new StreamSource(classLoader.getResourceAsStream(XSD.XML_SCHEMA)));
          schemas.add(new StreamSource(classLoader.getResourceAsStream(XSD.XLINKS)));
          schemas.add(new StreamSource(classLoader.getResourceAsStream("abc/xml/AppSchema.xsd")));
          SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
          schemaFactory.setResourceResolver(new LSResourceResolverImpl());
          try {
               Schema schema = schemaFactory.newSchema(schemas.toArray(new Source[schemas.size()]));
               Validator validator = schema.newValidator();
               validator.setErrorHandler(new ErrorHandler() {
                    @Override
                    public void error(SAXParseException e) throws SAXException {
                         errorMessage.setErrorMessage(e.getMessage());
                         errorMessage.setLineNumber(e.getLineNumber());
                         errorMessage.setColumnNumber(e.getLineNumber());
                         throw e;
                    @Override
                    public void fatalError(SAXParseException e) throws SAXException {
                         errorMessage.setErrorMessage(e.getMessage());
                         errorMessage.setLineNumber(e.getLineNumber());
                         errorMessage.setColumnNumber(e.getLineNumber());
                         throw e;
                    @Override
                    public void warning(SAXParseException e) throws SAXException {
                         errorMessage.setErrorMessage(e.getMessage());
                         errorMessage.setLineNumber(e.getLineNumber());
                         errorMessage.setColumnNumber(e.getLineNumber());
                         throw e;
               StreamSource source = new StreamSource(new File(filePath));
               validator.validate(source);
          } catch (SAXParseException e) {
               return false;
          } catch (SAXException e) {
               errorMessage.setErrorMessage(e.getMessage());
               return false;
          } catch (FactoryConfigurationError e) {
               errorMessage.setErrorMessage(e.getMessage());
               return false;
          } catch (IOException e) {
               errorMessage.setErrorMessage(e.getMessage());
               return false;
          return true;
     public ErrorMessage getErrorMessage() {
          return errorMessage;
}Edited by: erossy on Aug 31, 2010 1:56 AM