原始的message.xml<?xml  version="1.0"encoding="UTF-8"?>sendUserssnake2007-12-0412:20:001thisis Contentjava程序importjava.io.File;importjavax.xml.parsers.DocumentBuilder;importjavax.xml.parsers.DocumentBuilderFactory;importjavax.xml.transform.Transformer;importjavax.xml.transform.TransformerFactory;importjavax.xml.transform.dom.DOMSource;importjavax.xml.transform.stream.StreamResult;importorg.w3c.dom.Document;importorg.w3c.dom.Node;importorg.w3c.dom.NodeList;publicclassUpdateXml {publicstaticbooleandoc2XmlFile(Document document, String filename) {booleanflag=true;try{

TransformerFactory tFactory=TransformerFactory.newInstance();

Transformer transformer=tFactory.newTransformer();//transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312");DOMSource source=newDOMSource(document);

StreamResult result=newStreamResult(newFile(filename));

transformer.transform(source, result);

}catch(Exception ex) {

flag=false;

ex.printStackTrace();

}returnflag;

}publicstaticDocument load(String filename) {

Document document=null;try{

DocumentBuilderFactory factory=DocumentBuilderFactory

.newInstance();

DocumentBuilder builder=factory.newDocumentBuilder();

document=builder.parse(newFile(filename));

document.normalize();

}catch(Exception ex) {

ex.printStackTrace();

}returndocument;

}publicstaticvoidxmlUpdateDemo() {

Document document=load("message.xml");

Node root=document.getDocumentElement();if(root.hasChildNodes()) {

NodeList ftpnodes=root.getChildNodes();for(inti=0; i

NodeList ftplist=ftpnodes.item(i).getChildNodes();for(intk=0; k

Node subnode=ftplist.item(k);//if (subnode.getNodeType()==Node.ELEMENT_NODE&&subnode.//getNodeName()=="ftp-chn")//{//ftpnodes.item(i).removeChild(subnode);//}if(subnode.getNodeType()==Node.ELEMENT_NODE&&subnode.getNodeName()=="status") {

subnode.getFirstChild().setNodeValue("9");

}

}

}

}

doc2XmlFile(document,"message.xml");

}publicstaticvoidmain(String args[])throwsException {

UpdateXml.xmlUpdateDemo();

}

}

修改后的message.xml<?xml  version="1.0"encoding="UTF-8"?>sendUserssnake2007-12-0412:20:009thisis Content