[code]Java与XML(二)用java编写xml的读写程序

这是读取xml文件的java程序，我调试好的。采用的是dom方式读取xml文件到Vector中。

package src;

import java.io.*;

import java.util.Vector;

import javax.xml.parsers.*;

import org.w3c.dom.*;

public class readxml {

static Document document;

private boolean validating;

public readxml() {

}

public Vector toRead(String filename) {

Vector title=new Vector();

Vector content=new Vector();

String myStr=new String();

all.add(title);

all.add(content);

return all;

}

public static void main(String[] args) {

Vector A;

readxml my = new readxml();

A = my.toRead("f:\\tomcat5\\webapps\\myxml\\xmldata\\9.xml");

for (int i = 0; i < A.size(); i++) {

System.out.println(A.elementAt(i));

}

}

}

这是将xml写入文件。其中，transformer.setOutputProperty(OutputKeys.ENCODING,"GB2312")关系到编码问题，非常重要。

import org.w3c.dom.*;

import javax.xml.parsers.*;

import javax.xml.transform.*;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import java.io.*;

public class writexml {

private Document document;

private String filename;

public writexml(String name) throws ParserConfigurationException{

filename=name;

DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();

DocumentBuilder builder=factory.newDocumentBuilder();

document=builder.newDocument();

}

public void toWrite(String mytitle,String mycontent){

Element root=document.createElement("WorkShop");

document.appendChild(root);

Element title=document.createElement("Title");

title.appendChild(document.createTextNode(mytitle));

root.appendChild(title);

Element content=document.createElement("Content");

content.appendChild(document.createTextNode(mycontent));

root.appendChild(content);

}

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();

}

}

public static void main(String args[]){

try{

writexml myxml=new writexml("f:\\tomcat5\\webapps\\myxml\\xmldata\\9.xml");

myxml.toWrite("中文题目","中文内容");

myxml.toSave();

System.out.print("Your writing is successful.");

}

catch(ParserConfigurationException exp){

exp.printStackTrace();

System.out.print("Your writing is failed.");

}

}

}

[/code]