OpenCloseD

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

public class CreateJdomXml {
?String root="messages";
??? String child="message";
?String[][] childitem={{"title","a"},{"content","aaa"},{"email","aaaaa"}};
?/**
? * @param args
? */
?public CreateJdomXml(){
??
?}
?public static void main(String[] args) {
??// TODO 自動生成方法存根
??CreateJdomXml cj=new CreateJdomXml();
??cj.deletexml();
??
?}
???
?public void createxml(){
??Element roote=new Element(root);
??Element childe=new Element(child);
??childe.addAttribute("id", "A");
??for(int i=0;i<childitem.length;i++){
???Element childchild=new Element(childitem[i][0]);
???childchild.setText(childitem[i][1]);
???childe.addContent(childchild);
??}
??roote.addContent(childe);
??Document doc=new Document(roote);
??String newfile="D:/NewCearteExample.xml";
??File file=new File(newfile);
??if(!file.exists()){
???try {
????file.createNewFile();
???} catch (IOException e) {
????// TODO 自動生成 catch 塊
????e.printStackTrace();
???}
??}
??OutputStream os=null;
??try {
???os=new FileOutputStream(file);
??} catch (FileNotFoundException e) {
???// TODO 自動生成 catch 塊
???e.printStackTrace();
??}
??XMLOutputter xop=new XMLOutputter();
??xop.setEncoding("gb2312");
??xop.setIndentSize(3);
??xop.setNewlines(true);
??xop.setSuppressDeclaration(false);
??try {
???xop.output(doc, os);
???os.close();
?????
??} catch (IOException e) {
???// TODO 自動生成 catch 塊
???e.printStackTrace();
??}
??
??
?}
?
?public void updatexml(){
??InputStream is=null;
??OutputStream os=null;
?String path="D:/NewCearteExample.xml";
?File file=new File(path);
?try {
??is=new FileInputStream(file);
??SAXBuilder builder=new SAXBuilder();
??Document doc=builder.build(is);
??Element root=doc.getRootElement();
??List childrenlist=root.getChildren();
??Element child=(Element)childrenlist.get(0);
??Element childchild=new Element("desc");
??childchild.setText("person");
??child.addContent(childchild);
???????
??os=new FileOutputStream(file);
??XMLOutputter xop=new XMLOutputter();
??xop.setNewlines(true);
??xop.setIndentSize(3);
??xop.setEncoding("gb2312");?
??xop.output(doc,os);
??os.close();
??is.close();
??
??
?} catch (Exception e) {
??// TODO 自動生成 catch 塊
??e.printStackTrace();
?}
??
?
?}

?? public void deletexml(){
??? InputStream is=null;
??OutputStream os=null;
?String path="D:/NewCearteExample.xml";
?File file=new File(path);?
?try{
?is=new FileInputStream(file);
?SAXBuilder builder=new SAXBuilder();
?Document doc=builder.build(is);
?Element root=doc.getRootElement();
?List childlist=root.getChildren();
?Element child=(Element)childlist.get(0);
?List childrenlist=child.getChildren();
?for(int i=0;i<childrenlist.size();i++){
??Element childchild=(Element)childrenlist.get(i);
??if(childchild.getName().equalsIgnoreCase("desc")){
???childrenlist.remove(i);
??}
?}
?os=new FileOutputStream(file);
?XMLOutputter xop=new XMLOutputter();
?xop.setNewlines(true);
?xop.setIndentSize(3);
?xop.setEncoding("gb2312");?
?xop.output(doc,os);
?os.close();
?is.close();
?
?}catch(Exception e)
?{e.printStackTrace();
?}
?? }
?
}