📄 ws-j2x-4-11.html
字号:
<html> <!-- This panel generated from the developerWorks XML tag set for tutorials, Version 2.0.0. (C) Copyright 2000, 2001 IBM Corporation. All rights reserved. --> <head><META http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>循序渐进的 EJB 技术示例</title>
<style type="text/css"><!--
body { color: #000000; background-color: #ffffff; }
dt { font-weight: bold; }
code { font-family: Courier, monospace; font-size: +2; }
titleCode { font-family: Courier, monospace; font-size: +4; }
ol.alpha { list-style-type: upper-alpha; }
span.center { text-align: center; }
span.right { text-align: right; }
span.constant { color: #990099; }
span.keyword { color: #993333; }
span.function-name { color: #666633; }
span.comment { color: #666666; }
span.string { color: #0000ff; }
span.variable-name { color: #000066; }
span.type { color: #006600; }
span.spacer { font-size: 1pt; }
.small { font-family: Verdana, sans-serif; font-size: 8pt }
.divider { color: #999999; font-family: Verdana, Arial, sans-serif; font-weight: normal }
a.mainlink:link { text-decoration: none; color: #ffffff; font-family: Verdana, Arial, sans-serif; font-weight: bold; font-size: 8pt }
a.mainlink:visited { text-decoration: none; color: #ffffff; font-family: Verdana, Arial, sans-serif; font-weight: bold; font-size: 8pt }
a.mainlink:hover { text-decoration: underline; color: #ffffff; font-family: Verdana, Arial, sans-serif; font-weight: bold; font-size: 8pt }
.hbg { background-color : #006699; background-image: url(../i/lines.gif) ;background-repeat: repeat; }
.tbg { background-color : #006699; background-image: url(../i/gr760.gif); }
.tbgc { background-color : #006699 }
.bbg { background-color : #000000; vertical-align: middle }
.dbg { background-color : #6699cc }
.mbg { background-color : #99ccff }
.lbg { background-color : #cce5ff }
-->
</style>
</head>
<body bgcolor="ffffff">
<script language="javascript">
<!-- var emailAbstract="本教程为 J2EE 开发者讲述如何使用 XDoclet 来加速开发。XDoclet 使用面向属性编程来简化组件之间的连续集成。通过生成部署描述符和支持代码，它使您能够大大地减少开发时间，从而使您能够把重点放在应用程序逻辑代码上。";
var justTitle="用 XDoclet 来改进 J2EE 组件的重用";
var tutorialPrereqs="http://www-106.ibm.com/developerworks/education/ws-j2x";
var menu1blurb="关于本教程";
var menu2blurb="循序渐进的 Servlet 示例";
var menu3blurb="循序渐进的定制标记示例（标记库）";
var menu4blurb="循序渐进的 EJB 技术示例";
var menu5blurb="xPetstore";
var menu6blurb="总结";
var browser = "x";
if (navigator.userAgent.indexOf("Mozilla/4") != -1) browser = "N3";
else if (navigator.userAgent.indexOf("Mozilla/3") != -1) browser = "N3";
else browser = "x";
if (browser=="N3")
{
var menu1over=new Image(108,68);
var menu1out=new Image(108,68);
var menu2over=new Image(108,68);
var menu2out=new Image(108,68);
var menu3over=new Image(108,68);
var menu3out=new Image(108,68);
var menu4over=new Image(108,68);
var menu4out=new Image(108,68);
var menu5over=new Image(108,68);
var menu5out=new Image(108,68);
var menu6over=new Image(108,68);
var menu6out=new Image(108,68);
var topmainover=new Image(77,15);
var topmainout=new Image(77,15);
var bottommainover=new Image(77,15);
var bottommainout=new Image(77,15);
var topsectionover=new Image(98,15);
var topsectionout=new Image(98,15);
var bottomsectionover=new Image(98,15);
var bottomsectionout=new Image(98,15);
var topfeedbackover=new Image(80,15);
var topfeedbackout=new Image(80,15);
var bottomfeedbackover=new Image(80,15);
var bottomfeedbackout=new Image(80,15);
var toppreviousover=new Image(77,15);
var toppreviousout=new Image(77,15);
var bottompreviousover=new Image(77,15);
var bottompreviousout=new Image(77,15);
var topnextover=new Image(60,15);
var topnextout=new Image(60,15);
var bottomnextover=new Image(60,15);
var bottomnextout=new Image(60,15);
var topnextsectionover=new Image(108,15);
var topnextsectionout=new Image(108,15);
var bottomnextsectionover=new Image(108,15);
var bottomnextsectionout=new Image(108,15);
menu1over.src="imagemaster/himenu1.jpg";
menu1out.src="imagemaster/menu1.jpg";
menu2over.src="imagemaster/himenu2.jpg";
menu2out.src="imagemaster/menu2.jpg";
menu3over.src="imagemaster/himenu3.jpg";
menu3out.src="imagemaster/menu3.jpg";
menu4over.src="imagemaster/himenu4.jpg";
menu4out.src="imagemaster/menu4.jpg";
menu5over.src="imagemaster/himenu5.jpg";
menu5out.src="imagemaster/menu5.jpg";
menu6over.src="imagemaster/himenu6.jpg";
menu6out.src="imagemaster/menu6.jpg";
var mainblurb="主菜单";
var sectionblurb="章节菜单";
var feedbackblurb="提交反馈意见";
var previousblurb="上一屏";
var nextblurb="下一屏";
var nextsectionblurb="下一章";
topmainover.src="../i/h-main.gif";
topmainout.src="../i/main.gif";
bottommainover.src="../i/h-main.gif";
bottommainout.src="../i/main.gif";
topsectionover.src="../i/h-section.gif";
topsectionout.src="../i/section.gif";
bottomsectionover.src="../i/h-section.gif";
bottomsectionout.src="../i/section.gif";
topfeedbackover.src="../i/h-feedback.gif";
topfeedbackout.src="../i/feedback.gif";
bottomfeedbackover.src="../i/h-feedback.gif";
bottomfeedbackout.src="../i/feedback.gif";
toppreviousover.src="../i/h-previous.gif";
toppreviousout.src="../i/previous.gif";
bottompreviousover.src="../i/h-previous.gif";
bottompreviousout.src="../i/previous.gif";
topnextover.src="../i/h-next.gif";
topnextout.src="../i/next.gif";
bottomnextover.src="../i/h-next.gif";
bottomnextout.src="../i/next.gif";
topnextsectionout.src="../i/nextsection.gif";
topnextsectionover.src="../i/h-nextsection.gif";
bottomnextsectionout.src="../i/nextsection.gif";
bottomnextsectionover.src="../i/h-nextsection.gif";
}
function iOut(image)
{
if (browser=="N3")document[image].src=eval(image + "out.src");
}
function iOver(image)
{
if (browser=="N3")document[image].src=eval(image + "over.src");
}
// -->
</script><a href="#navskip"><img border="0" alt="Skip to main content" src="../i/c.gif"></a>
<table cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td class="tbgc" width="160"><a href="/developerWorks/cgi-bin/click.cgi?url=http://www.ibm.com/cn"><img height="47" width="160" alt="IBM" border="0" src="../i/ibm-logo.gif"></a></td><td class="tbg" width="195"><font color="#99ccff" size="2"><b>中国</b></font><a href="#main"><img alt="Skip to main content" height="1" width="195" border="0" src="../i/c.gif"></a></td><td valign="top" align="right" class="tbgc" width="100%">
<table cellspacing="0" cellpadding="0" border="0">
<form name="form1" id="form1" action="http://202.95.2.149/cgi-bin/dWsearch.pl" method="get">
<tr>
<td colspan="6"><img alt="" height="4" width="390" border="0" src="../i/c.gif"></td>
</tr>
<tr valign="middle">
<td class="dwsearch" height="8"><select class="dwsearch" name="selScope"><option value="dW">dW 中国所有内容</option><option value="dW">................. </option><option value="dW">dW 中国技术专区:</option><option value="comptZ"> 组件技术</option><option value="javaZ"> Java 技术</option><option value="linuxZ"> Linux</option><option value="xmlZ"> XML</option><option value="linuxZ">dW 中国特别专题:</option><option value="securityZ"> 安全</option><option value="unicodeZ"> Unicode</option><option value="all">IBM 全部内容</option></select></td><td class="small"><img alt="" border="0" height="1" width="5" src="../i/c.gif"></td><td><input maxlength="100" size="15" height="15" name="UserRestriction" class="dwsearch" type="text"></td><td><img alt="" height="1" width="5" border="0" src="../i/c.gif"></td><td width="64"><input alt="搜索" name="Search" value="Search" border="0" height="23" width="64" src="../i/search.gif" type="image"></td><td valign="top"><img alt="" height="1" width="34" border="0" src="../i/c.gif"></td>
</tr>
<tr valign="top">
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -