Validating xml in java
Indeed, if you don’t need to extract detailed information on the parsing process and just want to check whether an XML file is valid or not, you can simply run import *; import XSD (XML Schema Definition) represent the content model or grammar of an XML document. * */ public class XMLSchema Validator What we do here is simply parsing an XML document. We request the Document Builder Factory to validate a given XML document against a given XML Schema document by invoking the set Validate() method of the factory. * * The implementation is sketched at * * Improvements required to the code to validate XML files with * multiple namespaces are also found at the above URL.* * @param stream * the Schema stream * @param context * the SAXB context * @param handler * the SAX handler * @param resolver * the SAX resolver * @return the unmarshaler * @throws JAXBException * @throws SAXException */ private Unmarshaller create Unmarshaler(Input Stream stream, JAXBContext context, Handler handler, Resolver resolver) throws JAXBException, SAXException /** * Reads the XML formatted string from the provided transport Reader, and resurrects the object graph * found within the transport Reader.* * @param transport Reader The Reader holding a single XML-formatted String being converted by the marshal method * in an Xml Binder of the same internal implementation as this one.
In effect, you plug in a resolver that knows how to map an online location to a location on your filesystem (or more precisely a location to another one).
SAX provides only a “push” parser (no writer) that requires a cumbersome event handling setup to obtain the parsed data, and DOM replicates the entire XML document in memory which is not feasible for large files.
In contrast, St AX is a “streaming” API like SAX with minimal memory footprint regardless of data size, but its “pull” model is nearly as easy to use and understand as DOM – and St AX also features a writer.
formatting XML with line breaks and perhaps indentation.
St AX always outputs XML files as a single enormous line with no added whitespace whatsoever, making manual inspection very cumbersome.