w3c.dom元件寫xml檔案執行個體

w3c.dom元件寫xml檔案執行個體

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));

   //将記憶體裡的dom 轉為xml檔案

   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檔案：

<?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>