jcabi-xml – How to validate XML with XSD Schema

How to validate XML with XSD Schema

You need one class XSDDocument which implements XSD interface. It works with your default DOM implementation. For example:

import com.jcabi.xml.XSDDocument;
import java.util.Collection;
import javax.xml.transform.stream.StreamSource;
import org.apache.commons.io.IOUtils;
import org.xml.sax.SAXParseException;
public class Main {
  public void main(String[] args) {
    String xsd = "<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'>",
      + "<xs:element name='payments'/>",
      + "</xs:schema>";
    Collection<SAXParseException> errors = new XSDDocument(xsd).validate(
      new StreamSource(
        IOUtils.toInputStream(
          "<orders><order id="4">Coffee to go</order></orders>",
          "UTF-8"
        )
      )
    );
    if (errors.isEmpty()) {
      System.out.println("XML is valid");
    } else {
      System.out.println("XSD validation failed: " + errors);
    }
  }
}