Source: http://blog.yesky.com/blog/tiantian911/Archive/2005/02/12/73848.html
I have been watching XML recently, I found that XML is really a good stuff. With it, the exchange data has never been convenient. Today, I made my first XML app, huh, a message book based on XML technology.
Abandon the database, and use XML directly to store information, and then convert it through XSLT to HTML directly, it feels very easy.
The development tool uses Eclipse as Java IDE, XML operations using JDOM, XML file editing uses Oxygen XML Editor (very easy to use XML editor, pure Java).
This is Guestbook.xml, all messages are stored here.
XML Version = "1.0" encoding = "GB2312"
?>
DOCTYPE GUESTBOOK SYSTEM "File: / f: /site/xmlguestbook/guestbook.dtd"
>
XML-Stylesheet Type = "text / xsl" href = "guestbook.xsl"
?>
<
Guestbook
>
<
Message
>
<
Name
>
Vince Carter
Name
>
<
IP
>
202.113.66.66
IP
>
<
Content
>
A good site, do you think so?
Content
>
Message
>
<
Message
>
<
Name
>
Antony Walker
Name
>
<
IP
>
202.113.22.123
IP
>
<
Content
>
Vc isn't right here, you shouth be traded.
Content
>
Message
>
Guestbook
>
This is a DTD file, which is very convenient to use Oxygen XML Editor.
Element Message (#pcdata | name | ip | content) *
>
Element Content (#pcdata)
>
Element Guestbook (#pcdata | message) *
>
ELEMENT IP (#pcdata)
>
ELEMENT NAME (#pcdata)
>
This is a XSLT file:
XML Version = "1.0"
?>
<
XSL: Stylesheet
XMLns: XSL
= "http://www.w3.org/tr/wd-xsl"
>
<
XSL: Template
Match
= "/"
>
<
HTML
>
<
Body
>
<
TABLE
Border
= "1"
Bgcolor
= "Yellow">
<
TR
>
<
TH
>
Name
TH
>
<
TH
>
IP
TH
>
<
TH
>
Content
TH
>
TR
>
<
XSL: For-Each
SELECT
= "Guestbook / Message"
>
<
TR
>
<
TD
> <
XSL: Value-of
SELECT
= "Name"
/>
TD
>
<
TD
> <
XSL: Value-of
SELECT
= "IP"
/>
TD
>
<
TD
> <
XSL: Value-of
SELECT
= "Content"
/>
TD
>
TR
>
XSL: For-Each
>
TABLE
>
Body
>
HTML
>
XSL: Template
>
XSL: Stylesheet
>
Tissue in form, clear and easy to understand. Here is the Java code.
/ *
* Create Date 2005-2-15
* /
Package com.tiantian.xmlguestbook;
//
com.tiantian
Import org.jdom.document; import org.jdom.jdomexception; import org.jdom.input.saxbuilder; import org.jdom.output.
*
Import java.io.
*
;
/ *
* * @Author Tiantian
* /
Public class xmlguestbookbean {public static
Void
Main (String [] args) {XmlGuestbookBean Exam
=
New
XMLGuestbookBean ();
//
Declare an example of XMLGuestBookbean
Exam.addMessage
"
James
"
,
"
202.11.223.22
"
,
"
Hahah
"
);
//
Add a message, test
PUBLIC Element root
=
NULL
;
//
Define root
Public xmlguestbookbean () {
//
Empty constructor
} Private
Void
AddMessage (String Name, String IP, String Content) {
Try
{SAXBUILDER SB
=
New
Saxbuilder (); Document Doc
=
Sb.build
"
Guestbook.xml
"
Root
=
Doc.getrootElement ();
//
Take the root element
Element newmessage
=
New
ELEMENT
"
Message
"
Element NewName
=
New
ELEMENT ("
Name
"
Element NewContent
=
New
ELEMENT
"
Content
"
Element newip
=
New
ELEMENT
"
IP
"
NewName.Settext (Name);
//
Fill in the name
NewContent.Settext (Content);
//
Fill in settings
Newip.setText (IP);
//
IP
NewMessage.AddContent (newname);
//
Add a name to Message
NewMessage.AddContent (newip);
//
Add IP address to Message
NEWMESSAGE.AddContent (NewContent);
//
Add message content to Message
Root.addContent (NewMessage);
//
Add Message to the root
Format Format
=
Format.getCompactFormat (); format.setencoding
"
GB2312
"
);
//
Set the character of the XML file for GB2312
Format.SetinDent
"
"
XMLOUTPUTTER XMLOUT
=
New
XMLOUTPUTTER (FORMAT);
//
After the element is wrapped, the elements of each layer are protected from four grids.
XMlout.output (DOC,
New
FileOutputStream
"
Guestbook.xml
"
));
//
Output to file
}
Catch
FILENOTFOUNDEXCEE) {
//
file not found
E.PrintStackTrace ();
Catch
(JDOMEXCEPTION E) {
//
Jdom is abnormal
E.PrintStackTrace ();
Catch
IOEXCEPTION E) {
//
IO unusual
E.PrintStackTrace ();}}}
After using the format of Eclispe, it is beautiful, huh, huh. Just use the call in JSP / servlet, you can use the XML file directly, is it more clear and clear than the last JSP implementation?
