java 解析XML文件

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();                
 DocumentBuilder builder = factory.newDocumentBuilder();      
 Document document = builder.parse(inputStream);      
 Element element = document.getDocumentElement();     
 
 NodeList dataNodes = ((Element)element.getElementsByTagName("Application").item(0)).getChildNodes();
 for(int i = 0; i 
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