XSD Validation Failed with SAXParserFactory

This section provides a tutorial example showing the SAXParserFactory class failed to perform validation with XSD schema file specified in XML documents.

I think we can also use SAXParser class to validate an XML document against an XSD schema. Let me try with this sample program SAXValidator2.java:

/* SAXValidatorXSD.java
 - Copyright (c) 2014, HerongYang.com, All Rights Reserved.
 */
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
class SAXValidatorXSD {
   public static void main(String[] args) {
      String schemaFeature 
         = "http://apache.org/xml/features/validation/schema";
      try {
      	 File x = new File(args[0]);
         SAXParserFactory f = SAXParserFactory.newInstance();
         System.out.println(f.toString());
         f.setValidating(true);
         f.setFeature(schemaFeature,true);
         SAXParser p = f.newSAXParser();
         System.out.println(p.toString());
         DefaultHandler h = new MyErrorHandler();
         p.parse(x,h);
      } catch (ParserConfigurationException e) {
         System.out.println(e.toString()); 
      } catch (SAXException e) {
         System.out.println(e.toString()); 
      } catch (IOException e) {
         System.out.println(e.toString()); 
      }
   }
   private static class MyErrorHandler extends DefaultHandler {
      public void warning(SAXParseException e) throws SAXException {
         System.out.println("Warning: "); 
         printInfo(e);
      }
      public void error(SAXParseException e) throws SAXException {
         System.out.println("Error: "); 
         printInfo(e);
      }
      public void fatalError(SAXParseException e) throws SAXException {
         System.out.println("Fattal error: "); 
         printInfo(e);
      }
      private void printInfo(SAXParseException e) {
         System.out.println("   Public ID: "+e.getPublicId());
         System.out.println("   System ID: "+e.getSystemId());
         System.out.println("   Line number: "+e.getLineNumber());
         System.out.println("   Column number: "+e.getColumnNumber());
         System.out.println("   Message: "+e.getMessage());
      }
   }
}

Note that I set the schema feature to the SAXParserFactory object.

Now run the program with JDK 1.8:

>java SAXValidator2 dictrionary_invalid_xsd.xml

com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl@1db9742
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl@106d69c

Error:
   Public ID: null
   System ID: file:/C:/herong/dictionary_invalid_xsd.xml
   Line number: 3
   Column number: 49
   Message: cvc-elt.1: Cannot find the declaration of element 
      'dictionary'.

Fattal error:
   Public ID: null
   System ID: file:/C:/herong/dictionary_invalid_xsd.xml
   Line number: 14
   Column number: 10
   Message: The content of elements must consist of well-formed 
      character data or markup.

org.xml.sax.SAXParseException; systemId: 
   file:/C:/herong/dictionary_invalid_xsd.xml; lineNumber: 14; 
   columnNumber: 10; The content of elements must consist of 
   well-formed character data or markup.

Unfortunately, the test program failed to load the XSD schema file "dictionary.xsd", which is specified in the attribute xsi:noNamespaceSchemaLocation="dictionary.xsd" in the XML document. This is why we are getting first error "Cannot find the declaration of element 'dictionary'".

See the next tutorial for another way of validating XML document against XSD schema with SAX parser.

Last update: 2014.

Table of Contents

 About This JDK Tutorial Book

 Downloading and Installing JDK 1.8.0 on Windows

 Downloading and Installing JDK 1.7.0 on Windows

 Downloading and Installing JDK 1.6.2 on Windows

 Java Date-Time API

 Date, Time and Calendar Classes

 Date and Time Object and String Conversion

 Number Object and Numeric String Conversion

 Locales, Localization Methods and Resource Bundles

 Calling and Importing Classes Defined in Unnamed Packages

 HashSet, Vector, HashMap and Collection Classes

 Character Set Encoding Classes and Methods

 Character Set Encoding Maps

 Encoding Conversion Programs for Encoded Text Files

 Socket Network Communication

 Datagram Network Communication

 DOM (Document Object Model) - API for XML Files

 SAX (Simple API for XML)

 DTD (Document Type Definition) - XML Validation

XSD (XML Schema Definition) - XML Validation

 XML XSD Schema Validation

 XML XSD Schema Validation Test Result

 XML XSD Schema Validation with Xerces

XSD Validation Failed with SAXParserFactory

 XSD Schema Validator on XML SAX Object

 XSL (Extensible Stylesheet Language)

 Message Digest Algorithm Implementations in JDK

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Digital Signature Algorithm and Sample Program

 "keytool" Commands and "keystore" Files

 KeyStore and Certificate Classes

 Secret Key Generation and Management

 Cipher - Secret Key Encryption and Decryption

 The SSL (Secure Socket Layer) Protocol

 SSL Socket Communication Testing Programs

 SSL Client Authentication

 HTTPS (Hypertext Transfer Protocol Secure)

 Outdated Tutorials

 References

 PDF Printing Version