java,用jdom操作xml-创建,修改

package test; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.util.Iterator; import java.util.List; import org.jdom.Document; import org.jdom.Element; import org.jdom.JDOMException; import org.jdom.input.SAXBuilder; import org.jdom.output.Format; import org.jdom.output.XMLOutputter; public class ModifyXML { /** * @param args */ File file;//声明File对象file Document doc;//声明Document对象doc SAXBuilder builder;//声明用来解析XML文档的SAXBuilder类对象builder public ModifyXML(){ file = new File("c:\\customer.xml"); builder = new SAXBuilder(); try { doc = builder.build(file); } catch (JDOMException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } //获得XML文档的根节点元素 Element root=doc.getRootElement(); //获得XML文档根节点元素下的全部子节点元素 List list = root.getChildren(); for (Iterator iter = list.iterator(); iter.hasNext();) { //获得其中一个字节点元素 Element element = (Element) iter.next(); //获得该子节点元素名 String notename = element.getName(); if (notename.equals("address")) { //添加子元素"country"，并设置其内容为"China" Element country = new Element("country"); country.addContent("China"); element.addContent(country); //修改名为"street"的子元素内容 Element street = element.getChild("street"); street.setText("BUPT,10# XiTuCheng road"); //修改名为"district"的子元素 element.removeChild("district"); } } //创建XML文件输出流 XMLOutputter xmlop = new XMLOutputter(); try { //创建XML文件输出流 FileWriter fw = new FileWriter("c:\\customer.xml"); //设置所创建的XML文档的格式 Format fmt = Format.getPrettyFormat(); fmt.setEncoding("gbk"); xmlop.setFormat(fmt); //将生成的XML文档写入到"c:\customer.xml"文件中 xmlop.output(doc,fw); fw.close(); } catch (IOException e) { e.printStackTrace(); } } public static void main(String[] args) { new ModifyXML(); } }