如何使用节点名称和特定属性值获取特定节点及其子程序？

Question

注意:我正在处理的文件，我事先不知道它们的结构，所以我不能使用XPath，这里是我的XPath文件的一个例子：

<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
<HWData>
<Header time="2013-05-29T13:39:34" uploaded="true" version="1.0" />
  <NE vendorName="Nokia Siemens Networks" NEId="WBTS-431">
    <EQHO vendorName="Nokia Siemens Networks" equipmentHolderId="173" >
        <UNIT vendorName="N" unitId="16" />
        <UNIT vendorName="NOKIA SIEMENS NETWORKS" unitId="225" />
    </EQHO>
    <EQHO vendorName="NSN" equipmentHolderId="40192" >
        <UNIT vendorName="AR" unitId="40267" />
    </EQHO>
  </NE>
  <NE vendorName="Nokia Siemens Networks" NEId="WBTS-261">
    <EQHO vendorName="Nokia Siemens Networks" equipmentHolderId="132" >
      <EQHO vendorName="Nokia Siemens Networks" equipmentHolderId="132-1">
        <UNIT vendorName="NN" unitId="1621" />
      </EQHO>
    </EQHO>
  </NE>
</HWData>

我想知道是否可以使用节点名"NE“和属性值NEID=”WBT-261“作为结果！

预期结果：

<NE vendorName="Nokia Siemens Networks" NEId="WBTS-261">
    <EQHO vendorName="Nokia Siemens Networks" equipmentHolderId="132" >
      <EQHO vendorName="Nokia Siemens Networks" equipmentHolderId="132-1">
        <UNIT vendorName="NN" unitId="1621" />
      </EQHO>
    </EQHO>
</NE>

有人能让我走上正确的道路吗?任何例子、想法或建议都会受到赞赏。谢谢

Answer 1

将此方法作为字符串使用到节点：

 public static String NodeToString(String file,String moid) throws   SAXException, IOException, ParserConfigurationException{
String stringNode="";
InputStream in = new ByteArrayInputStream(file.getBytes("ISO-8859-1"));
Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(in);
NodeList nodeList = doc.getElementsByTagName("*");
for (int i = 0; i < nodeList.getLength(); i++) {
    if(nodeList.item(i) instanceof Element && ((Element)nodeList.item(i)).getAttribute("MOID").equalsIgnoreCase(moid)){

try
{

  // Set up the output transformer
  TransformerFactory transfac = TransformerFactory.newInstance();
  Transformer trans = transfac.newTransformer();
  trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
  trans.setOutputProperty(OutputKeys.INDENT, "yes");

  // Print the DOM node

  StringWriter sw = new StringWriter();
  StreamResult result = new StreamResult(sw);
  DOMSource source = new DOMSource(nodeList.item(i));
  trans.transform(source, result);
  stringNode = sw.toString();

  //System.out.println(xmlString);
}
catch (TransformerException e)
{
  e.printStackTrace();
}       


    }
}
return stringNode;

 }