XML操作 文档

<书库>

<书>

<书名>Java编程入门

<作者>张三

<出版社>电子出版社

<价格>35.0

<出版日期>2002-10-07

<书>

<书名>XML在Java中的应用

<作者>李四

<出版社>希望出版社

<价格>92.0

<出版日期>2002-10-07

下面是操作XML文件的Bean:

package xml;

/**

* XML的读写操作Bean

*/

import java.io.*;

import java.util.*;

import org.jdom.*;

import org.jdom.output.*;

import org.jdom.input.*;

import javax.servlet.*;

import javax.servlet.http.*;

public class XmlBean{

private String bookname,author,pub,price,pubdate;

public String getbookname() { return bookname;}

public String getauthor() { return author;}

public String getpub() { return pub;}

public String getprice() { return price;}

public String getpubdate() { return pubdate;}

public void setbookname(String bookname) { this.bookname =bookname ; } public void setauthor(String author) { this.author =author; }

public void setpub(String pub) { this.pub =pub ; }

public void setprice(String price) { this.price =price ; }

public void setpubdate(String pubdate) { this.pubdate =pubdate ; }

public XmlBean(){}

/**

* 读取XML文件所有信息

*/

public Vector LoadXML(String path)throws Exception{

Vector xmlVector = null;

FileInputStream fi = null;

try{

fi = new FileInputStream(path);

xmlVector = new Vector();

SAXBuilder sb = new SAXBuilder();

Document doc = sb.build(fi);

Element root = doc.getRootElement(); //得到根元素

List books = root.getChildren(); //得到根元素所有子元素的集合Element book =null;

XmlBean xml =null;

for(int i=0;i

xml = new XmlBean();

book = (Element)books.get(i ); //得到第一本书元素

xml.setbookname(book.getChild("书名").getText());

xml.setauthor(book.getChild("作者").getText());

xml.setpub(book.getChild("出版社").getText());

xml.setprice(book.getChild("价格").getText());

xml.setpubdate(book.getChild("出版日期").getText());

xmlVector.add(xml);

}

}

catch(Exception e){

System.err.println(e+"error");

}

finally{

try{

fi.close();

}

catch(Exception e){

e.printStackTrace();

}

}

return xmlVector;

}

/**

* 删除XML文件指定信息

*/

public static void DelXML(HttpServletRequest request)throws Exception{ FileInputStream fi = null;

FileOutputStream fo = null;

try{

String path=request.getParameter("path");

int xmlid=Integer.parseInt(request.getParameter("id"));

fi = new FileInputStream(path);

SAXBuilder sb = new SAXBuilder();

Document doc = sb.build(fi);

Element root = doc.getRootElement(); //得到根元素

List books = root.getChildren(); //得到根元素所有子元素的集合books.remove(xmlid);//删除指定位置的子元素

String indent = " ";

boolean newLines = true;

XMLOutputter outp = new XMLOutputter(indent,newLines,"GBK");

fo=new FileOutputStream(path);

outp.output(doc,fo);

}

catch(Exception e){

System.err.println(e+"error");

}

finally{

try{

fi.close();

fo.close();

}

catch(Exception e){

e.printStackTrace();

}

}

}

/**

* 添加XML文件指定信息

*/

public static void AddXML(HttpServletRequest request)throws Exception{ FileInputStream fi = null;

FileOutputStream fo = null;

try{

String path=request.getParameter("path");

fi = new FileInputStream(path);

SAXBuilder sb = new SAXBuilder();

Document doc = sb.build(fi);

Element root = doc.getRootElement(); //得到根元素

List books = root.getChildren(); //得到根元素所有子元素的集合

String bookname=request.getParameter("bookname");

String author=request.getParameter("author");

String price=request.getParameter("price");

String pub=request.getParameter("pub");

String pubdate=request.getParameter("pubdate");

Text newtext;

Element newbook= new Element("书");

Element newname= new Element("书名");

newname.setText(bookname);

newbook.addContent(newname);

Element newauthor= new Element("作者");

newauthor.setText(author);

newbook.addContent(newauthor);

Element newpub= new Element("出版社");

newpub.setText(pub);

newbook.addContent(newpub);

Element newprice= new Element("价格");

newprice.setText(price);

newbook.addContent(newprice);

Element newdate= new Element("出版日期");

newdate.setText(pubdate);

newbook.addContent(newdate);

books.add(newbook);//增加子元素

String indent = " ";

boolean newLines = true;

XMLOutputter outp = new XMLOutputter(indent,newLines,"GBK");

fo=new FileOutputStream(path);

outp.output(doc,fo);

}

catch(Exception e){

System.err.println(e+"error");

}

finally{

try{

fi.close();

fo.close();

}

catch(Exception e){

e.printStackTrace();

}

}

}

/**

* 修改XML文件指定信息

*/

public static void EditXML(HttpServletRequest request)throws Exception{ FileInputStream fi = null;

FileOutputStream fo = null;

try{

String path=request.getParameter("path");

int xmlid=Integer.parseInt(request.getParameter("id"));

fi = new FileInputStream(path);

SAXBuilder sb = new SAXBuilder();

Document doc = sb.build(fi);

Element root = doc.getRootElement(); //得到根元素

List books = root.getChildren(); //得到根元素所有子元素的集合Element book=(Element)books.get(xmlid);

String bookname=request.getParameter("bookname");

String author=request.getParameter("author");

String price=request.getParameter("price");

String pub=request.getParameter("pub");

String pubdate=request.getParameter("pubdate");

Text newtext;

Element newname= book.getChild("书名");

newname.setText(bookname);//修改书名为新的书名

Element newauthor= book.getChild("作者");

newauthor.setText(author);

Element newpub= book.getChild("出版社");

newpub.setText(pub);

Element newprice= book.getChild("价格");

newprice.setText(price);

Element newdate= book.getChild("出版日期");

newdate.setText(pubdate);

//books.set(xmlid,book);//修改子元素

String indent = " ";

boolean newLines = true;

XMLOutputter outp = new XMLOutputter(indent,newLines,"GBK"); fo=new FileOutputStream(path);

outp.output(doc,fo);

}

catch(Exception e){

System.err.println(e+"error");

}

finally{

try{

fi.close();

fo.close();

}

catch(Exception e){

e.printStackTrace();

}

}

}

}

下面是操作的jsp文件:

<%@ page contentType="text/html;charset=GBK" %>

<%@ page language="java" import="java.util.*,xml.*"%>

JDOM操作XML文件

读取XML文件中的所有资料

书名

作者

出版社

价格

出版日期

操作

<%

String path = application.getRealPath("/test/xml/")+"testC.xml";

XmlBean xml=new XmlBean();

Vector xmlall=xml.LoadXML(path);

for(int i=0;i

xml=(XmlBean)xmlall.elementAt(i );

/**out.println("书名:"+xml.getbookname()+"
");

out.println("作者:"+xml.getauthor()+"
");

out.println("出版社:"+xml.getpub()+"
");

out.println("价格:"+xml.getprice()+"
");

out.println("出版日期:"+xml.getpubdate()+"

");

*/

%>

<%=xml.getbookname()%>

<%=xml.getauthor()%>

<%=xml.getpub()%>

<%=xml.getprice()%>

<%=xml.getpubdate()%>

删除

<%}%>

添加资料编辑资料

序号:

<%for(int i=0;i

第<%=i+1%>条

<%}%>

书名:

作者:

出版社:

价格:

日期:

下面是处理上一文件提交的jsp文件:

<%@ page contentType="text/html;charset=GBK" %>

<%@ page language="java" import="xml.*"%>

<%if(request.getParameter("act")!=null && request.getParameter("act").equals("add")){ XmlBean.AddXML(request);

out.println("

添加成功

返回");

}

else if(request.getParameter("act")!=null && request.getParameter("act").equals("del")){ XmlBean.DelXML(request);

out.println("

删除成功

返回");

}

else if(request.getParameter("act")!=null && request.getParameter("act").equals("edit")){ XmlBean.EditXML(request);

out.println("

修改成功

返回");

}

else{out.print("

非法操作

返回");} 查看该新闻的相关评论