source: nutchez-0.1/tomcat/webapps/examples/jsp/jsp2/el/functions.jsp @ 234

Last change on this file since 234 was 66, checked in by waue, 15 years ago

NutchEz - an easy way to nutch

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2 Licensed to the Apache Software Foundation (ASF) under one or more
3  contributor license agreements.  See the NOTICE file distributed with
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5  The ASF licenses this file to You under the Apache License, Version 2.0
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9      http://www.apache.org/licenses/LICENSE-2.0
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12  distributed under the License is distributed on an "AS IS" BASIS,
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14  See the License for the specific language governing permissions and
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16-->
17<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
18<%@ taglib prefix="my" uri="http://jakarta.apache.org/tomcat/jsp2-example-taglib"%>
19
20<html>
21  <head>
22    <title>JSP 2.0 Expression Language - Functions</title>
23  </head>
24  <body>
25    <h1>JSP 2.0 Expression Language - Functions</h1>
26    <hr>
27    An upgrade from the JSTL expression language, the JSP 2.0 EL also
28    allows for simple function invocation.  Functions are defined
29    by tag libraries and are implemented by a Java programmer as
30    static methods.
31
32    <blockquote>
33      <u><b>Change Parameter</b></u>
34      <form action="functions.jsp" method="GET">
35    foo = <input type="text" name="foo" value="${fn:escapeXml(param["foo"])}">
36          <input type="submit">
37      </form>
38      <br>
39      <code>
40        <table border="1">
41          <thead>
42      <td><b>EL Expression</b></td>
43      <td><b>Result</b></td>
44    </thead>
45    <tr>
46      <td>\${param["foo"]}</td>
47      <td>${fn:escapeXml(param["foo"])}&nbsp;</td>
48    </tr>
49    <tr>
50      <td>\${my:reverse(param["foo"])}</td>
51      <td>${my:reverse(fn:escapeXml(param["foo"]))}&nbsp;</td>
52    </tr>
53    <tr>
54      <td>\${my:reverse(my:reverse(param["foo"]))}</td>
55      <td>${my:reverse(my:reverse(fn:escapeXml(param["foo"])))}&nbsp;</td>
56    </tr>
57    <tr>
58      <td>\${my:countVowels(param["foo"])}</td>
59      <td>${my:countVowels(fn:escapeXml(param["foo"]))}&nbsp;</td>
60    </tr>
61  </table>
62      </code>
63    </blockquote>
64  </body>
65</html>
66
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