import com.sun.tools.internal.xjc.reader.xmlschema.parser.IncorrectNamespaceURIChecker; //导入依赖的package包/类
public void parse(InputSource source, ContentHandler handler,
            ErrorHandler errorHandler, EntityResolver entityResolver ) throws SAXException, IOException {
            // set up the chain of handlers.
            handler = wrapBy( new ExtensionBindingChecker(XMLConstants.W3C_XML_SCHEMA_NS_URI,opt,errorReceiver), handler );
            handler = wrapBy( new IncorrectNamespaceURIChecker(errorReceiver), handler );
            handler = wrapBy( new CustomizationContextChecker(errorReceiver), handler );
//          handler = wrapBy( new VersionChecker(controller), handler );

            baseParser.parse( source, handler, errorHandler, entityResolver );
        }