w3c.dom组件写xml文件实例

w3c.dom组件写xml文件实例

package com.yanek.demo.xml.test;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;

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 W3cDomWriteXml {

/**
* @param args
*/
public static void main(String[] args) {

Document doc = null;
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.newDocument();

Element root = doc.createElement("actions");
doc.appendChild(root);

Element action1 = doc.createElement("action");
Element action2 = doc.createElement("action");

root.appendChild(action1);
root.appendChild(action2);
action1.setAttribute("path","/test");

action2.setAttribute("path","/user");
action2.setAttribute("class","com.yanek.mystruts.demo.UserAction");
action1.setAttribute("class","com.yanek.mystruts.demo.TestAction");


Element forward1 = doc.createElement("forward");
Element forward2 = doc.createElement("forward");

Element forward3 = doc.createElement("forward");
Element forward4 = doc.createElement("forward");


action1.appendChild(forward1);
action1.appendChild(forward2);

action2.appendChild(forward3);
action2.appendChild(forward4);

forward1.setAttribute("name","test");

forward2.setAttribute("name","failure");
forward1.setAttribute("url","test.jsp");
forward2.setAttribute("url","failure.jsp");


forward3.setAttribute("name","user");

forward4.setAttribute("name","failure");
forward3.setAttribute("url","list.jsp");
forward4.setAttribute("url","failure.jsp");




File file = new File("d://type111.xml");

if(!file.exists()) {
file.createNewFile();
}

BufferedWriter bw = new BufferedWriter(new FileWriter(file));

//将内存里的dom 转为xml文件
TransformerFactory tff =TransformerFactory.newInstance();
Transformer tf = tff.newTransformer();
tf.setOutputProperty("encoding", "utf-8");
tf.transform(new DOMSource(doc), new StreamResult(bw));
bw.close();

} catch(Exception ex) {
ex.printStackTrace();
}

}

}

生成xml文件：

<?xml version="1.0" encoding="utf-8"?><actions><action class="com.yanek.mystruts.demo.TestAction" path="/test"><forward name="test" url="test.jsp"/><forward name="failure" url="failure.jsp"/></action><action class="com.yanek.mystruts.demo.UserAction" path="/user"><forward name="user" url="list.jsp"/><forward name="failure" url="failure.jsp"/></action></actions>