JSP1.2 scripting variable! help!!

JSP1.2 scripting variable! help!!
Posted by: Tony Liu on August 18, 2005 @ 03:06 PM
TOMCAT5/jsp1.2. I am using custom tag to expose a variable�Cthen a jsp script references an object that tag exposes. However, error happens to me always. "variable cannot be resolved". looks it cant expose the variable to jsp page.
My code:
TLD file:
<variable>
<name-from-attribute>method</name-from-attribute>
<variable-class>java.lang.String</variable-class>
<declare>true</declare>
<scope>AT_BEGIN</scope>
</variable>
someTag.java
pageContext.setAttribute("method",string1);
somePage.jsp
<%=method%>
error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 90 in the jsp file: /Tony/amvetsform.jsp
Generated servlet error:
method cannot be resolved
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:397)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
Who could let me know what's wrong with it? Bug from Tomcat? Or, I missed something to produce a scripting variable for jsp? It was supposed to be easy to expose a variable....
Thanks in advance.
Tony

A bit more info please.
How are you using this with your tag?
The code from your JSP with
- your custom tag being used
- where it is in relation to your scriptlet expression.
The "name-from-attribute" means that the name of the created variable is defined by the "method" attribute of your tag.
<my:tag method="theNameOfMyVariable">
<%= theNameOfMyVariable %>
</my:tag>Where do you use the variable in relation to where the tag is?
Declaring it AT_BEGIN means that it is available from the start tag to the close of any enclosing custom tag.
It won't be a bug in Tomcat. Always assume it is a problem with your code. 99.99% of the time, that assumption is correct.
Cheers,
evnafets

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