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<a name="navskip"></a><td height="25" colspan="4"><img alt="3.循序渐进的定制标记示例（标记库）" src="imagemaster/titlebar3.jpg" border="0" height="25" width="562"></td>
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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>把标记库生成添加到 XDoclet</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 3 页（共4 页）</nobr></font></td>
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<p>
您需要编写使用 XDoclet 的 <b>webdoclet</b> 任务的 Ant 脚本。为了在目标 <code>generateDD</code> 下添加对定制标记的支持，下面的清单修改了前面 <b>webdoclet</b> 清单中的代码。和前面一样，<b>webdoclet</b> 任务的输入文件由嵌套的 fileset 来指定，有一点例外，这次您添加了新的 include 伪指令以包含标记处理程序（即 <code>&lt;include name="**/*Tag.java" /&gt;</code>）。jsptaglib 子任务生成 TLD 文件，如下所示：
        
        <pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
       &lt;webdoclet destdir="${dest}"&gt;
 
          &lt;fileset dir="${src}"&gt;
             &lt;include name="**/*Servlet.java" /&gt;
             &lt;include name="**/*Tag.java" /&gt;
          &lt;/fileset&gt;
 
          &lt;deploymentdescriptor servletspec="2.3" 
                                  destdir="${WEBINF}" &gt;
                 &lt;taglib uri="mytaglib"
                         location="WEB-INF/tlds/mytaglib.tld"
                 /&gt;
                                  
          &lt;/deploymentdescriptor&gt;
 
          &lt;jsptaglib     
                 jspversion="1.2" 
                 destdir="${WEBINF}/tlds"
                 shortname="basic" 
                 filename="mytaglib.tld"/&gt;
 
       &lt;/webdoclet&gt;
        
     </code>
</pre>
请注意，为了创建 Web 应用程序的 <code>WEB-INF</code> 目录下的 TLD 文件 <i>mytaglib</i>，您添加了 jsptaglib 子任务，如下所示：
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
          &lt;jsptaglib     jspversion="1.2" 
                         destdir="${WEBINF}/tlds"
                         shortname="basic" 
                         filename="mytaglib.tld"/&gt;
 
 </code>
</pre>
另外请注意，为了在 <i>web.xml</i> 文件中生成标记库声明，您添加了 <b>deploymentdescriptor</b> 子任务下的子元素，如下所示：
 <pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
          &lt;deploymentdescriptor servletspec="2.3" 
                                  destdir="${WEBINF}" &gt;
                 &lt;taglib uri="mytaglib"
                         location="WEB-INF/tlds/mytaglib.tld"
                 /&gt;
 
 </code>
</pre>
以上代码在 <i>web.xml</i> 文件中生成以下条目，如下所示：
 <pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
 
    &lt;taglib&gt;
       &lt;taglib-uri&gt;mytaglib&lt;/taglib-uri&gt;
       &lt;taglib-location&gt;WEB-INF/tlds/mytaglib.tld&lt;/taglib-location&gt;
    &lt;/taglib&gt;
 
 </code>
</pre>
					
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