Validating XML - Java XML

Java examples for XML:XML Validation

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Description

Validating XML

Demo Code

import java.io.File;
import java.io.IOException;

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 Main {

  public void run(String xmlFile, String validationFile) {
    boolean valid = true;
    SchemaFactory sFactory = SchemaFactory
        .newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
    try {//from   ww w .java2  s . c o  m
      Schema schema = sFactory.newSchema(new File(validationFile));
      Validator validator = schema.newValidator();
      Source source = new StreamSource(new File(xmlFile));
      validator.validate(source);
    } catch (SAXException | IOException | IllegalArgumentException ex) {
      valid = false;
    }
    System.out.printf("XML file is %s.\n", valid ? "valid" : "invalid");
  }

  public static void main(String[] args) {
    if (args.length != 2) {
      System.out
          .println("Usage: java Main <xmlFile> <validationFile>");
      System.exit(1);
    }
    Main app = new Main();
    app.run(args[0], args[1]);
  }
}

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