1 Reply Latest reply on Jul 5, 2007 1:50 PM by Yogesh Bhardwaj

    Custom tag - Jasper compilation error

    Yogesh Bhardwaj Newbie

      Hello all,

      I am trying to use a simple custom tag in my JSP that sets an attribute on the page. This JSP works fine on both WebLogic and WebSphere, but gives the following compilation error on JBoss:

      <org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/].[jsp]> - <Servlet.service() for servlet jsp threw exception>
      org.apache.jasper.JasperException: Unable to compile class for JSP
      
      An error occurred at line: 125 in the jsp file: /test/jsp/testCustomTag.jsp
      Generated servlet error:
      pageVar cannot be resolved
      
       at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
       at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
       at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
       at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
       ...
       ...
      



      The code fragment in the JSP looks as follows:

      <util:myCustomTag
       id="pageVar"
       attr1="<% attr1 %>"
       attr2="<%= attr2 %>"
       attr3="<%= attr3 %>"
      >
      
      <%
       String pageVar2 = pageVar;
      %>
      


      And the tag definition in .tld is as follows:

      ...
      ...
      <tag>
       <name>myCustomTag</name>
       <tag-class>com.test.MyCustomTag</tag-class>
       <body-content>JSP</body-content>
       <description>
       Just a test tag
       </description>
       <variable>
       <name-from-attribute>id</name-from-attribute>
       <variable-class>String</variable-class>
       <declare>true</declare>
       <scope>AT_END</scope>
       </variable>
       <attribute>
       <name>id</name>
       <required>true</required>
       <rtexprvalue>false</rtexprvalue>
       </attribute>
       <attribute>
       <name>attr1</name>
       <required>true</required>
       <rtexprvalue>true</rtexprvalue>
       </attribute>
       <attribute>
       <name>attr2</name>
       <required>true</required>
       <rtexprvalue>true</rtexprvalue>
       </attribute>
       <attribute>
       <name>attr3</name>
       <required>true</required>
       <rtexprvalue>true</rtexprvalue>
       </attribute>
       <attribute>
       <name>attr4</name>
       <required>false</required>
       <rtexprvalue>true</rtexprvalue>
       </attribute>
      </tag>
      ...
      ...
      


      I enabled 1.5 features by uncommenting the following in deploy\jbossweb-tomcat55.sar\conf\web.xml:

      <init-param>
       <param-name>compilerSourceVM</param-name>
       <param-value>1.5</param-value>
      </init-param>
      


      Environment:
      - JBoss 4.0.5 GA
      - BEA JDK 1.5.0_04
      - Windows XP


      NOTE - The code fragment above is in a JSP that is an include in another JSP, and <%@ taglib uri="/taglib.tld" prefix="util"%> is declared in the parent JSP. The JSP has been included using the following:

      <%@ include file="/test/jsp/testCustomTag.jsp" %>
      


      Is there a JSP specs violation in this code somewhere? I would appreciate any feedback.

      Regards.