在Element节点上进行Xpath

　　　　　　　XPathFactory xPathFactory = XPathFactory.newInstance();
            XPath xpath = xPathFactory.newXPath();

            try {
                String rdfID = xpath.evaluate("/validateResponse/id", respValtElement);
                String rdfResult = xpath.evaluate("/validateResponse/content", respValtElement);
        
                System.out.println("校验结果：" + rdfResult);
            } catch (XPathExpressionException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }