关键词：Java, XML
采用JAVA处理XML非常容易
1,你需要一个JDK
2,你需要一些 free class libraries，如XML4J，XERCES，LOTUSXSL
3,你需要一个text editor
4,你需要一些待处理的DATA
预备条件
熟悉Java尤其是I/O, classes, objects, polymorphism等概念.
知道XML要well-formedness（格式准确）, validity（有法为证）, namespaces（名字空间）等。
I will briefly review proper terminology
一个简单的例子：
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/css" href="song.css"?>
<!DOCTYPE SONG SYSTEM "song.dtd">
<SONG xmlns="http://metalab.unc.edu/xml/namespace/song"
xmlns:xlink="http://www.w3.org/1999/xlink">
<TITLE>Hot Cop</TITLE>
<PHOTO
xlink:type="simple" xlink:show="onLoad" xlink:href="hotcop.jpg"
ALT="Victor Willis in Cop Outfit" WIDTH="100" HEIGHT="200"/>
<COMPOSER>Jacques Morali</COMPOSER>
<COMPOSER>Henri Belolo</COMPOSER>
<COMPOSER>Victor Willis</COMPOSER>
<PRODUCER>Jacques Morali</PRODUCER>
<!-- The publisher is actually Polygram but I needed
an example of a general entity reference. -->
<PUBLISHER xlink:type="simple" xlink:href="http://www.amrecords.com/">
A & M Records
</PUBLISHER>
<LENGTH>6:20</LENGTH>
<YEAR>1978</YEAR>
<ARTIST>Village People</ARTIST>
</SONG>
<!-- You can tell what album I was
listening to when I wrote this example -->
Markup and Character Data Markup includes:
1，Tags
2，Entity References
3，Comments
4，Processing Instructions
5，Document Type Declarations
6，XML Declaration
7，CDATA Section Delimiters
8，Character data includes everything else
例子：（标记和Character Data例子）
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/css" href="song.css"?>
<!DOCTYPE SONG SYSTEM "song.dtd">
<SONG xmlns="http://metalab.unc.edu/xml/namespace/song"
xmlns:xlink="http://www.w3.org/1999/xlink">
<TITLE>Hot Cop</TITLE>
<PHOTO
xlink:type="simple" xlink:show="onLoad" xlink:href="hotcop.jpg"
ALT="Victor Willis in Cop Outfit&qu
采用JAVA处理XML非常容易
1,你需要一个JDK
2,你需要一些 free class libraries，如XML4J，XERCES，LOTUSXSL
3,你需要一个text editor
4,你需要一些待处理的DATA
预备条件
熟悉Java尤其是I/O, classes, objects, polymorphism等概念.
知道XML要well-formedness（格式准确）, validity（有法为证）, namespaces（名字空间）等。
I will briefly review proper terminology
一个简单的例子：
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/css" href="song.css"?>
<!DOCTYPE SONG SYSTEM "song.dtd">
<SONG xmlns="http://metalab.unc.edu/xml/namespace/song"
xmlns:xlink="http://www.w3.org/1999/xlink">
<TITLE>Hot Cop</TITLE>
<PHOTO
xlink:type="simple" xlink:show="onLoad" xlink:href="hotcop.jpg"
ALT="Victor Willis in Cop Outfit" WIDTH="100" HEIGHT="200"/>
<COMPOSER>Jacques Morali</COMPOSER>
<COMPOSER>Henri Belolo</COMPOSER>
<COMPOSER>Victor Willis</COMPOSER>
<PRODUCER>Jacques Morali</PRODUCER>
<!-- The publisher is actually Polygram but I needed
an example of a general entity reference. -->
<PUBLISHER xlink:type="simple" xlink:href="http://www.amrecords.com/">
A & M Records
</PUBLISHER>
<LENGTH>6:20</LENGTH>
<YEAR>1978</YEAR>
<ARTIST>Village People</ARTIST>
</SONG>
<!-- You can tell what album I was
listening to when I wrote this example -->
Markup and Character Data Markup includes:
1，Tags
2，Entity References
3，Comments
4，Processing Instructions
5，Document Type Declarations
6，XML Declaration
7，CDATA Section Delimiters
8，Character data includes everything else
例子：（标记和Character Data例子）
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/css" href="song.css"?>
<!DOCTYPE SONG SYSTEM "song.dtd">
<SONG xmlns="http://metalab.unc.edu/xml/namespace/song"
xmlns:xlink="http://www.w3.org/1999/xlink">
<TITLE>Hot Cop</TITLE>
<PHOTO
xlink:type="simple" xlink:show="onLoad" xlink:href="hotcop.jpg"
ALT="Victor Willis in Cop Outfit&qu
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