急！急！ 征询解决方案。关于在Windows XP下，XML文件的写入，更新，删除...

[MagicJohn]

我用Apache 的xerces做XML的更新和删除，不知道为什么得不到正确的结果，程序能够执行但是得不到正确的结果。

import java.io.*;
import org.xml.sax.*;
import org.w3c.dom.*;
import org.apache.xerces.parsers.DOMParser;

class appendChild
{
public static void main(String[] args) throws SAXException,IOException
{
DOMParser parser;
try
{
FileInputStream xmlFile = new FileInputStream("sample4.xml");
InputSource xmlSource = new InputSource(xmlFile);

parser=new DOMParser();

//parser.parse("http://localhost:8080/xml/sample4.xml");
parser.parse(xmlSource);

Document xmldoc=parser.getDocument();
Node refNode=xmldoc.getElementsByTagName("Sex").item(1);
System.out.println(refNode.getFirstChild().getNodeValue());
Node newNode=xmldoc.createElement("Book");
Node resultNode=refNode.appendChild(newNode);
resultNode.setNodeValue("my book");
if (resultNode==newNode)
{
System.out.println(newNode.getFirstChild().getNodeValue());
System.out.println("追加成功！！");
}
}catch (SAXException sae)
{
sae.printStackTrace();
System.out.println("err");
}
}
}

[jery_lee]

关注。
up！

[MagicJohn]

up

[WAPQQ]

DocumentBuilder parser;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try{
parser = factory.newDocumentBuilder();
Document doc = parser.parse("/BackupMaster/xml_file/system_file.xml");
Element Name=doc.createElement("Name");
Name.setAttribute("savepath",pathText.getText());
Name.setAttribute("savesystem",system_String);
Name.appendChild(doc.createTextNode(treenameText.getText()));

doc.getDocumentElement().appendChild(Name);
File _outputFile=new File("/BackupMaster/xml_file/system_file.xml");
OutputFormat outputFormat=new OutputFormat("XML","gb2312",true);
FileWriter fileWriter=new FileWriter(_outputFile);
XMLSerializer xmlSerializer=new XMLSerializer(
fileWriter,outputFormat);
xmlSerializer.asDOMSerializer();
xmlSerializer.serialize(doc.getDocumentElement());
getnewtreeNode=treenameText.getText();
}catch (Exception evc){
System.out.println(evc.toString());
}



更新没有问题，删除我自己也在关注.

[WAPQQ]

删除也ok了

http://expert.csdn.net/Expert/topic/1386/1386721.xml?temp=.7916529