我'使用org.w3c.dom.Document中的XML parsing.I在我的服务器就像一个xml文件..在Java中使用文档中删除XML中的节点
<query><item access='server1'><item access='server2'><item access='server3'></query>
我会读这个XML基于文件和一些选项的,我会动态地消除任何一个节点(服务器或服务器2 server(服务器)或)和返回结果为一个字符串,这样我可以在我的用户interface.below的一个表现是代码
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilderFactory.setIgnoringComments(true);
inputStream = new FileInputStream(new File(filename));
org.w3c.dom.Document doc = documentBuilderFactory.newDocumentBuilder().parse(inputStream);
Element rootNode = doc.getDocumentElement();
if(filename.endsWith("items.xml"))//load the enabled items
{
NodeList nList = doc.getElementsByTagName("item");
for(int i = 0; i < nList.getLength(); i++)
{
try
{
Node node = nList.item(i);
if((node.getNodeType() == Node.ELEMENT_NODE))
{
Element ele = (Element)node;
String access = (String)ele.getAttribute("access");
String level = access.substring(0,access.indexOf("."));
if(!LevelManager.isLevelEnabled(level))
{
rootNode.removeChild(node);
}
}
else
{
System.out.println("NO ELEMENT NODE");
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
doc.normalize();
StringWriter stw = new StringWriter();
Transformer serializer = TransformerFactory.newInstance().newTransformer();
serializer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION,"yes");
serializer.transform(new DOMSource(doc), new StreamResult(stw));
discfeatures = stw.toString();
return discfeatures;
}
catch(Exception w)
{
}
现在,问题是--->有时节点不能删除。例如,如果我删除server1属性节点 - 它被删除。然后我再次尝试删除server2属性node.it显示server1节点should'nt.Please让我知道如果我使用正确的方式删除节点。
由于