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Posted to users@tomcat.apache.org by Thomas Nybro Bolding <th...@danskebank.dk> on 2004/09/06 15:56:04 UTC
Vedr.: Problem when using TAGLIB in JSP
Assuming you are using 1.4 or higher your classes have to be in packages -
see for instance this thread
http://forum.java.sun.com/thread.jsp?thread=536889&forum=33&message=2596508
/Thomas
jlonc@gi-bon.sk
06-09-2004 15:24
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Vedr.: Problem when using TAGLIB in JSP
hi.
i have two classes:
"MyClass" and "test.MyClass" (they are totally the same and one of them is
a member of package "test")
i use them as tagclasses (taglib.tld):
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN"
"http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
<taglib>
<tlibversion>1.1</tlibversion>
<jspversion>1.1</jspversion>
<shortname></shortname>
<tag>
<name>my_tag</name>
<tagclass>MyClass</tagclass> <--- (for the second class it's
"test.MyClass")
<bodycontent>JSP</bodycontent>
<info>
test tag
</info>
<attribute>
<name>name</name>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
</tag>
</taglib>
content of "web.xml":
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<display-name>test_MY</display-name>
<taglib>
<taglib-uri>tlt</taglib-uri>
<taglib-location>/WEB-INF/taglib.tld</taglib-location>
</taglib>
</web-app>
and the "index.jsp" is:
<%@ taglib uri="tlt" prefix="tlt" %>
<html>
<head>
<title>Organization</title>
</head>
<body bgcolor="white">
<table border=2 cellspacing=3 cellpadding=3>
<tr>
<td><b>Departments</b></td>
</tr>
<tlt:my_tag>
<tr>
<td><a href="list.jsp?deptName=">aaa</a></td>
</tr>
</tlt:my_tag>
</table>
</body>
</html>
variant with "test.MyClass" works without problems, but the packageless
one generates this error/exception:
An error occurred at line: 11 in the jsp file: /index.jsp
Generated servlet error:
C:\Tomcat5\work\Catalina\localhost\test_my\org\apache\jsp\index_jsp.java:91:
cannot resolve symbol
symbol : class MyClass
location: class org.apache.jsp.index_jsp
MyClass _jspx_th_tlt_my_tag_0 = (MyClass)
_jspx_tagPool_tlt_my_tag.get(MyClass.class);
^
An error occurred at line: 11 in the jsp file: /index.jsp
Generated servlet error:
C:\Tomcat5\work\Catalina\localhost\test_my\org\apache\jsp\index_jsp.java:91:
cannot resolve symbol
symbol : class MyClass
location: class org.apache.jsp.index_jsp
MyClass _jspx_th_tlt_my_tag_0 = (MyClass)
_jspx_tagPool_tlt_my_tag.get(MyClass.class);
^
An error occurred at line: 11 in the jsp file: /index.jsp
Generated servlet error:
C:\Tomcat5\work\Catalina\localhost\test_my\org\apache\jsp\index_jsp.java:91:
cannot resolve symbol
symbol : class MyClass
location: class org.apache.jsp.index_jsp
MyClass _jspx_th_tlt_my_tag_0 = (MyClass)
_jspx_tagPool_tlt_my_tag.get(MyClass.class);
^
3 errors
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
my tomcat's version: 5.0.28
i don't know what could be the problem...
any ideas?
Best regards,
Juraj Lonc
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Re: Vedr.: Problem when using TAGLIB in JSP
Posted by jl...@gi-bon.sk.
hi (again).
>
> Assuming you are using 1.4 or higher your classes have to be in packages
-
> see for instance this thread
>
http://forum.java.sun.com/thread.jsp?thread=536889&forum=33&message=2596508
>
> /Thomas
>
you're right thomas, i am using 1.4,
but do know the reason, why sun (or whoever) decided to change it that
way?
what's bad about packageless classes?
Best regards,
Juraj Lonc