java类——使用javax.xml创建xml文件

 package tt;

import javax.xml.parsers.*;
import java.io.File;
import java.io.IOException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;

import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

public class CreatXML {
 String filename;
 DocumentBuilderFactory factory;
 DocumentBuilder  builder;
 Document doc ;

 public CreatXML(String filename) throws ParserConfigurationException{
  this.filename = filename;
  factory = DocumentBuilderFactory.newInstance();
  builder = factory.newDocumentBuilder();
  doc = builder.newDocument();
 }
 
 public void setChildTxt(String childtxt,Element father){
  Text txt = doc.createTextNode(childtxt);
  father.appendChild(txt);
 }
 
 public Element setChild(String child,Element father){
  Element newChild  =doc.createElement(child);
  father.appendChild(newChild);
  return newChild;
 }

 public Document getDoc(){
  return doc;
 }
//生成xml文件 
 public boolean creat(){
  boolean ret = false;
//  创建文件
  File file = new File(filename);
  if( !file.exists()||!file.isFile()){
   try {
    file.createNewFile();
   } catch (IOException e) {
    // TODO 自动生成 catch 块
    e.printStackTrace();
   }
  }
  StreamResult streamResult = new StreamResult(file);
  Source inputSource = new DOMSource(doc);
  TransformerFactory transformerFactory = TransformerFactory.newInstance();
  Transformer transformer;
  try {
   transformer = transformerFactory.newTransformer();
   transformer.transform(inputSource, streamResult);
   ret = true;
  } catch (TransformerConfigurationException e) {
   // TODO 自动生成 catch 块
   e.printStackTrace();
  } catch (TransformerException e) {
   // TODO 自动生成 catch 块
   e.printStackTrace();
  }
  return ret;
 }
}