import java.io.*;\x0d\x0a \x0d\x0aimport org.dom4j.*;\x0d\x0a import org.dom4j.io.OutputFormat;\x0d\x0a import org.dom4j.io.XMLWriter;\x0d\x0a \x0d\x0apublic class DOM4JTest {\x0d\x0a public static void main(String[] args) {\x0d\x0a Document doc = DocumentHelper.createDocument();\x0d\x0a doc.addProcessingInstruction("xml-stylesheet", "type='text/xsl href='students.xsl'");\x0d\x0a Element root = doc.addElement("students");\x0d\x0a \x0d\x0a Element eltStu1 = root.addElement("student").addAttribute("sn", "01");\x0d\x0a Element eltName1 = eltStu1.addElement("name");\x0d\x0a Element eltAge1 = eltStu1.addElement("age");\x0d\x0a eltName1.setText("张三");\x0d\x0a eltAge1.setText("20");\x0d\x0a \x0d\x0a Element eltStu2 = root.addElement("student").addAttribute("sn", "02");\x0d\x0a Element eltName2 = eltStu2.addElement("name");\x0d\x0a Element eltAge2 = eltStu2.addElement("age");\x0d\x0a eltName2.setText("李四");\x0d\x0a eltAge2.setText("18");\x0d\x0a \x0d\x0a try {\x0d\x0a OutputFormat format = new OutputFormat("\x0d\x0a ", true);\x0d\x0a format.setEncoding("gb2312");\x0d\x0a // 可以把System.out改为你要的流。\x0d\x0a XMLWriter xmlWriter = new XMLWriter(new PrintWriter(System.out), format);\x0d\x0a xmlWriter.write(doc);\x0d\x0a xmlWriter.close();\x0d\x0a } catch (IOException e) {\x0d\x0a e.printStackTrace();\x0d\x0a }\x0d\x0a }\x0d\x0a }
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xml:
?xml version="1.0" encoding="UTF-8"?
users
Messages
sendNamesendUsers/sendName
receiveNamesnake/receiveName
date2007-12-04 12:20:00/date
status0/status
messagethis is Content/message
/Messages
/users
java:
package com.lianxi.DAO;
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class UpdateXml {
public static boolean doc2XmlFile(Document document,String filename)
{
boolean flag = true;
try
{
/** 将document中的内容写入文件中 */
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
/** 编码 */
//transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312");
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(new File(filename));
transformer.transform(source, result);
}catch(Exception ex)
{
flag = false;
ex.printStackTrace();
}
return flag;
}
public static Document load(String filename)
{
Document document = null;
try
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder=factory.newDocumentBuilder();
document=builder.parse(new File(filename));
document.normalize();
}
catch (Exception ex){
ex.printStackTrace();
}
return document;
}
/**
* 演示修改文件的具体某个节点的值
*/
public static void xmlUpdateDemo()
{
Document document = load("c://Message.xml");
Node root=document.getDocumentElement();
/** 如果root有子元素 */
if(root.hasChildNodes())
{
/** ftpnodes */
NodeList ftpnodes = root.getChildNodes();
/** 循环取得ftp所有节点 */
for (int i=0;iftpnodes.getLength();i++)
{
NodeList ftplist = ftpnodes.item(i).getChildNodes();
for (int k=0;kftplist.getLength();k++)
{
Node subnode = ftplist.item(k);
/** 删除ftp-chn节点 */
// if (subnode.getNodeType()==Node.ELEMENT_NODEsubnode.getNodeName()=="ftp-chn")
// {
// ftpnodes.item(i).removeChild(subnode);
// }
/** 修改ftp-host的值为 192.168.0.1 */
if (subnode.getNodeType()==Node.ELEMENT_NODEsubnode.getNodeName()=="status")
{
subnode.getFirstChild().setNodeValue("1");
}
}
}
}
doc2XmlFile(document,"c://Message.xml");
}
public static void main(String args[])throws Exception
{
UpdateXml.xmlUpdateDemo();
}
}
用java自带的就可以，有问题可以问我
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
//构造
public XMLUtil(String name) throws ParserConfigurationException {
filename = name;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
builder = factory.newDocumentBuilder();
document = builder.newDocument();
}
/**
* 保存到文件
*/
public void toSave() {
try {
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
DOMSource source = new DOMSource(document);
transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
PrintWriter pw = new PrintWriter(new FileOutputStream(filename));
StreamResult result = new StreamResult(pw);
transformer.transform(source, result);
} catch (TransformerException mye) {
mye.printStackTrace();
} catch (IOException exp) {
exp.printStackTrace();
}
}
这个是要求命令行程序吧
首先是选择一个xml库，然后是实现基本的集合查询，最后是实现输入输出
老弟啊 你这些代码太多啊 我给你指出个方向吧，你不就是想作出来个树状菜单吗？树状菜单的生成有很多方法，这里我给你介绍4个，第一用dhtmlxtree,具体怎么弄官方给出了例子，第二dtree，这个是由3部分组成，一个是JS文件，一个是CSS文件，一个是你页面调用DAO层方法显示页面的文件，第三用acegi，这个是跟STRUTS相关的组件，第四就是直接通过JAVA out.println()出来，这里你让谁谁都不会给你完整的写出来，因为代码量大，所以我只能给你指明下方向
一个XML文档，可以先构造一个DOM，然后将DOM转化为xml序列，输出或者生成文件。package test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class Test {
public static void generate(){
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.newDocument();
document.setXmlVersion("1.0");
document.setXmlStandalone(true);
Element root = document.createElement_x("MobileNet"); //创建根节点
document.appendChild(root); //将根节点添加到Document对象中
Element pageElement = document.createElement_x("page"); //设置第一个page元素到
pageElement.setAttribute("name", "list.jsp"); //设置page节点的name属性
Element methodElement = document.createElement_x("method"); //设置method节点
methodElement.setTextContent("get"); //给method设置值
pageElement.appendChild(methodElement); //添加method节点到page节点内
Element displayElement = document.createElement_x("display"); //设置method节点
displayElement.setTextContent("list撒旦发放"); //给display设置值
pageElement.appendChild(displayElement); //添加display节点到page节点内
Element request_paramElement = document.createElement_x("request_param");
request_paramElement.setTextContent("request_param1|request_param2");
pageElement.appendChild(request_paramElement);
root.appendChild(pageElement);
pageElement = document.createElement_x("page"); //设置第二个page元素到
pageElement.setAttribute("name", "content.jsp"); //设置page节点的name属性
methodElement = document.createElement_x("method");
methodElement.setTextContent("post");
pageElement.appendChild(methodElement);
displayElement = document.createElement_x("display");
displayElement.setTextContent("content");
pageElement.appendChild(displayElement);
Element url_titleElement = document.createElement_x("url_title"); //设置url_title节点
url_titleElement.setTextContent("title,publisher,published_calendar"); //给url_title设置值
pageElement.appendChild(url_titleElement); //添加url_title节点到page节点内
root.appendChild(pageElement); //将page段加人根节点内
TransformerFactory transFactory = TransformerFactory.newInstance(); //开始把Document映射到文件
Transformer transFormer = transFactory.newTransformer();
DOMSource domSource = new DOMSource(document); //设置输出结果
File file = new File("MobileNetRule.xml"); //生成xml文件
if (!file.exists()) {
file.createNewFile();
}
FileOutputStream out = new FileOutputStream(file); //文件输出流
StreamResult xmlResult = new StreamResult(out); //设置输入源
transFormer.transform(domSource, xmlResult); //输出xml文件
System.out.println(file.getAbsolutePath()); //测试文件输出的路径
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
t.setOutputProperty("{/encoding/}","GB2312/");
ByteArrayOutputStream boc = new ByteArrayOutputStream();
t.transform(new DOMSource(document), new StreamResult(boc));
String xmlstring = boc.toString();
System.out.println(xmlstring);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args){
Test.generate();
}
}
