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>
