Grosse MàJ

2008-11-25 22:11:16 +01:00
parent 53195fdfcd
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+<html><body><pre>
+&lt;!--
+ Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+&lt;%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
+&lt;%@ taglib prefix="my" uri="http://jakarta.apache.org/tomcat/jsp2-example-taglib"%>
+
+&lt;html>
+  &lt;head>
+    &lt;title>JSP 2.0 Expression Language - Functions&lt;/title>
+  &lt;/head>
+  &lt;body>
+    &lt;h1>JSP 2.0 Expression Language - Functions&lt;/h1>
+    &lt;hr>
+    An upgrade from the JSTL expression language, the JSP 2.0 EL also
+    allows for simple function invocation.  Functions are defined
+    by tag libraries and are implemented by a Java programmer as 
+    static methods.
+
+    &lt;blockquote>
+      &lt;u>&lt;b>Change Parameter&lt;/b>&lt;/u>
+      &lt;form action="functions.jsp" method="GET">
+	  foo = &lt;input type="text" name="foo" value="${fn:escapeXml(param["foo"])}">
+          &lt;input type="submit">
+      &lt;/form>
+      &lt;br>
+      &lt;code>
+        &lt;table border="1">
+          &lt;thead>
+	    &lt;td>&lt;b>EL Expression&lt;/b>&lt;/td>
+	    &lt;td>&lt;b>Result&lt;/b>&lt;/td>
+	  &lt;/thead>
+	  &lt;tr>
+	    &lt;td>\${param["foo"]}&lt;/td>
+	    &lt;td>${fn:escapeXml(param["foo"])}&amp;nbsp;&lt;/td>
+	  &lt;/tr>
+	  &lt;tr>
+	    &lt;td>\${my:reverse(param["foo"])}&lt;/td>
+	    &lt;td>${my:reverse(fn:escapeXml(param["foo"]))}&amp;nbsp;&lt;/td>
+	  &lt;/tr>
+	  &lt;tr>
+	    &lt;td>\${my:reverse(my:reverse(param["foo"]))}&lt;/td>
+	    &lt;td>${my:reverse(my:reverse(fn:escapeXml(param["foo"])))}&amp;nbsp;&lt;/td>
+	  &lt;/tr>
+	  &lt;tr>
+	    &lt;td>\${my:countVowels(param["foo"])}&lt;/td>
+	    &lt;td>${my:countVowels(fn:escapeXml(param["foo"]))}&amp;nbsp;&lt;/td>
+	  &lt;/tr>
+	&lt;/table>
+      &lt;/code>
+    &lt;/blockquote>
+  &lt;/body>
+&lt;/html>
+
+</pre></body></html>