I am running BasicArithmetic example found in the base distribution -
http://localhost:8080/jsp-examples/
Here is the source code. Actually , none of the tag library examples
work.
<html>
<head>
<title>JSP 2.0 Expression Language - Basic Arithmetic</title>
</head>
<body>
<h1>JSP 2.0 Expression Language - Basic Arithmetic</h1>
<hr>
This example illustrates basic Expression Language arithmetic.
Addition (+), subtraction (-), multiplication (*), division (/ or
div),
and modulus (% or mod) are all supported. Error conditions, like
division by zero, are handled gracefully.
<br>
<blockquote>
<code>
<table border="1">
<thead>
<td><b>EL Expression</b></td>
<td><b>Result</b></td>
</thead>
<tr>
<td>\${1}</td>
<td>${1}</td>
</tr>
<tr>
<td>\${1 + 2}</td>
<td>${1 + 2}</td>
</tr>
<tr>
<td>\${1.2 + 2.3}</td>
<td>${1.2 + 2.3}</td>
</tr>
<tr>
<td>\${1.2E4 + 1.4}</td>
<td>${1.2E4 + 1.4}</td>
</tr>
<tr>
<td>\${-4 - 2}</td>
<td>${-4 - 2}</td>
</tr>
<tr>
<td>\${21 * 2}</td>
<td>${21 * 2}</td>
</tr>
<tr>
<td>\${3/4}</td>
<td>${3/4}</td>
</tr>
<tr>
<td>\${3 div 4}</td>
<td>${3 div 4}</td>
</tr>
<tr>
<td>\${3/0}</td>
<td>${3/0}</td>
</tr>
<tr>
<td>\${10%4}</td>
<td>${10%4}</td>
</tr>
<tr>
<td>\${10 mod 4}</td>
<td>${10 mod 4}</td>
</tr>
<tr>
<td>\${(1==2) ? 3 : 4}</td>
<td>${(1==2) ? 3 : 4}</td>
</tr>
</table>
</code>
</blockquote>
</body>
</html>
-----Original Message-----
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 24, 2003 11:18 AM
To: Tomcat Users List
Subject: RE: Tomcat 5 - Tag Lib Error
Howdy,
What pageContext calls are you making in your JSP page?
Yoav Shapira
Millennium ChemInformatics
>-----Original Message-----
>From: Chakravarthy, Sundar [mailto:[EMAIL PROTECTED]
>Sent: Wednesday, December 24, 2003 11:12 AM
>To: [EMAIL PROTECTED]
>Subject: Tomcat 5 - Tag Lib Error
>
>Hi,
>
>
>
>I just installed Windows version of Tomcat 5.x and get the following
>error while try to run tag library examples..
>
>Others work fine.
>
>
>
>
>HTTP Status 500 -
>
> _____
>
>
>type Exception report
>
>message
>
>description The server encountered an internal error () that prevented
>it from fulfilling this request.
>
>exception
>
>javax.servlet.ServletException: Error instantiating servlet class
>org.apache.jsp.jsp2.simpletag.hello_jsp
>
>org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticato
r
>Base.java:509)
>
>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav
a
>:164)
>
>org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:211)
>
>org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:8
0
>5)
>
>org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process
C
>onnection(Http11Protocol.java:696)
>
>org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:6
0
>5)
>
>org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo
l
>.java:677)
> java.lang.Thread.run(Thread.java:536)
>
>root cause
>
>java.lang.VerifyError: (class: org/apache/jsp/jsp2/simpletag/hello_jsp,
>method: _jspx_meth_mytag_helloWorld_0 signature:
>(Ljavax/servlet/jsp/PageContext;)Z) Incompatible argument to function
> java.lang.Class.getDeclaredConstructors0(Native Method)
> java.lang.Class.privateGetDeclaredConstructors(Class.java:1590)
> java.lang.Class.getConstructor0(Class.java:1762)
> java.lang.Class.newInstance0(Class.java:276)
> java.lang.Class.newInstance(Class.java:259)
>
>org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticato
r
>Base.java:509)
>
>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav
a
>:164)
>
>org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:211)
>
>org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:8
0
>5)
>
>org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process
C
>onnection(Http11Protocol.java:696)
>
>org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:6
0
>5)
>
>org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo
l
>.java:677)
> java.lang.Thread.run(Thread.java:536)
>
>note The full stack trace of the root cause is available in the Tomcat
>logs.
>
>
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