j-customtags-5-2.html

一个关于jsplabel的书籍.写的挺好,建议阅读

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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>例子：map 标签</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 2 页（共3 页）</nobr></font></td>
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<p>
          

 自定义标签的开发人员可以决定如何处理标签的正文。

 例如，可以编写一个执行 SQL 语句的标签，标签的正文是要执行的 SQL 语句。

 

 </p>
<p>

 

 回到 hashmap 主题，我们将编写一个像下面这样解析字符串的标签：

 

 </p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
  

           {

              firstName=Jennifer,

              lastName=Wirth,

              age=25

           }

 </code>
</pre>
<p>
  

 

 实际上，这个标签将读取这种字符串并将它转换为一个 <code>Map</code>（<code>java.util.Map</code>）。我们将调用新标签 <code>map</code>。下面是使用新标签的例子：

 

 </p>
<p>

 

 
</p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
  

 &lt;%@taglib uri="map" prefix="map"%&gt;

 &lt;html&gt;

 &lt;head&gt;&lt;title&gt;Test Map JSP&lt;/title&gt;&lt;/head&gt;

 &lt;body&gt;

 

 &lt;map:map id="employee"&gt;

           {

              firstName=Jennifer,

              lastName=Jones,

 

              age=25

           }

 &lt;/map:map&gt;

 

 &lt;br /&gt;

        The employee map is &lt;%=employee%&gt; &lt;br /&gt;

 

 &lt;/html&gt;

 </code>
</pre>
<p>
  

 

 上面的代码创建一个名为 <code>employee</code> 的 <code>map</code>，它有三项：<code>firstName</code>、<code>lastName</code> 和 <code>age</code>。

 


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