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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 34153] New: - Versions greater than JRE 1.4.2_05 breaks JSTL code
Date Wed, 23 Mar 2005 16:53:47 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=34153

           Summary: Versions greater than JRE 1.4.2_05 breaks JSTL code
           Product: Taglibs
           Version: 1.0
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Standard Taglib
        AssignedTo: taglibs-dev@jakarta.apache.org
        ReportedBy: bazu@email.it


When I load a jsp view (I use struts) in which there is a forEach tag I obtain:  
  
javax.servlet.ServletException: javax.servlet.jsp.JspException: An error  
occurred while evaluating custom action attribute "items" with value  
"${v.children}": Unable to find a value for "children" in object of class  
"it.ph.prodotti.fe.model.PriorityFeCat" using operator "." (null)  
        org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:821)
 
        org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
 
        org.apache.jsp.shop.fe.myvisto.home_jsp._jspService(home_jsp.java:171)  
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:810)  
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)  
        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:810)  
        org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1056)  
        org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:261)
 
        org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:388)
 
        org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:316)
 
        org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:231)  
        org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)  
        org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:697)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:810)  
        org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
 
  
  
root cause   
  
javax.servlet.jsp.JspException: An error occurred while evaluating custom  
action attribute "items" with value "${v.children}": Unable to find a value for  
"children" in object of class "it.ph.prodotti.fe.model.PriorityFeCat" using  
operator "." (null)  
        org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:109)  
        org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:129)  
        org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager.evaluate(ExpressionEvaluatorManager.java:75)
 
        org.apache.taglibs.standard.tag.el.core.ForEachTag.evaluateExpressions(ForEachTag.java:155)
 
        org.apache.taglibs.standard.tag.el.core.ForEachTag.doStartTag(ForEachTag.java:66)
 
        org.apache.jsp.shop.fe.myvisto.home_005fmenu_005fsx_jsp._jspx_meth_c_forEach_1 
(home_005fmenu_005fsx_jsp.java:195)  
        org.apache.jsp.shop.fe.myvisto.home_005fmenu_005fsx_jsp._jspx_meth_c_forEach_0 
(home_005fmenu_005fsx_jsp.java:136)  
        org.apache.jsp.shop.fe.myvisto.home_005fmenu_005fsx_jsp._jspService(home_005fmenu_005fsx_jsp.java:74)
 
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:810)  
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)  
        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:810)  
        org.apache.taglibs.standard.tag.common.core.ImportSupport.acquireString(ImportSupport.java:296)
 
        org.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag(ImportSupport.java:161)
 
        org.apache.jsp.shop.fe.myvisto.home_jsp._jspx_meth_c_import_1 
(home_jsp.java:232)  
        org.apache.jsp.shop.fe.myvisto.home_jsp._jspService(home_jsp.java:96)  
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:810)  
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)  
        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:810)  
        org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1056)  
        org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:261)
 
        org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:388)
 
        org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:316)
 
        org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:231)  
        org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)  
        org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:697)  
        javax.servlet.http.HttpServlet.service(HttpServlet.java:810)  
        org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
 
  
  
NB:  
1) If I use jvm for linux 1.4.2_07 this exception is thrown otherwise if i use  
JVM 1.4.2_05 ALL WORK (the same application into the same environment: jboss +  
linux)  
2) The class it.ph.prodotti.fe.model.PriorityFeCat not directly but from an its  
Superclass has the attribute children  
3) jstl.jar AND standard.jar are into WEB-INF/lib directory and both are  
version 1.0.6 (I looked into MANIFEST.MF)  
  
I solved this problem (as said in point 1) by "backversioning" my JVM I'had  
this idea after read this:   
  
http://forum.java.sun.com/thread.jspa?threadID=599301&tstart=0   
  
any idea?

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