这是我的代码:publicstaticvoidmain(String[]args){//System.setProperty(//"javax.xml.xpath.XPathFactory",//"net.sf.saxon.xpath.XPathFactoryImpl");Stringxml="#BBB##CCC##DDD#";try{JDocumentdom=newJDocument(xml);XPathFactoryfactory=net.sf.saxon.xpath.XPathFactoryImpl.newInstance();XPathxpath=factory.newXPat