📄 functions.jsp

📁 jsp 应用开发技术光盘是《jsp应用开发技术》这本书的源代码

💻 JSP

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<%@page pageEncoding="GB2312"%>
<%@ taglib prefix="my" uri="/WEB-INF/el-functions.tld"%>

<html>
  <head>
    <title>JSP 2.0 Expression Language - Functions</title>
  </head>
  <body>
    <h1>JSP 2.0 Expression Language - 函数</h1>
    <hr>    

    <blockquote>      
      <form action="functions.jsp" method="GET">
	  foo = <input type="text" name="foo" value="${param['foo']}">
          <input type="submit">
      </form>
      <br>
      <code>
        <table border="1">
          <thead>
	    <td><b>EL 表达式</b></td>
	    <td><b>结果</b></td>
	  </thead>
	  <tr>
	    <td>\${param["foo"]}</td>
	    <td>${param["foo"]}&nbsp;</td>
	  </tr>
	  <tr>
	    <td>\${my:reverse(param["foo"])}</td>
	    <td>${my:reverse(param["foo"])}&nbsp;</td>
	  </tr>
	  <tr>
	    <td>\${my:reverse(my:reverse(param["foo"]))}</td>
	    <td>${my:reverse(my:reverse(param["foo"]))}&nbsp;</td>
	  </tr>
	  <tr>
	    <td>\${my:countVowels(param["foo"])}</td>
	    <td>${my:countVowels(param["foo"])}&nbsp;</td>
	  </tr>
	  <tr>
	    <td>\${my:caps(param["foo"])}</td>
	    <td>${my:caps(param["foo"])}&nbsp;</td>
	  </tr>
	</table>
      </code>
    </blockquote>
  </body>
</html>

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