Details
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Bug
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Status: Closed
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Major
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Resolution: Won't Fix
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2.1.6
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None
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None
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OS:
Linux 2.6.18-92.1.13.el5 #1 SMP Wed Sep 24 19:33:52 EDT 2008 i686 i686 i386 GNU/Linux
Glassfish:
Version = Sun Java System Application Server 9.1_02
Description
I have an intermittent problem using the s:iterator tag with the waitAndExec interceptor. Here is the file that I am trying to insert into the tiles layout (viewrequest.jsp):
<%@ taglib prefix="s" uri="/struts-tags"%> <s:if test="empeRequest.messages.size() > 0"> <div class="box" style="background-color: #CCCCCC"> <h3><s:property value="empeRequest.description" /></h3> <ul> <s:iterator value="empeRequest.messages"> <s:if test="status.toString() == 'NORMAL'"> <li style="background-color: #CCFFCC"><s:property value="message" /></li> </s:if> <s:elseif test="status.toString() == 'WARNING'"> <li style="background-color: #FFFFCC"><s:property value="message" /></li> </s:elseif> <s:elseif test="status.toString() == 'ERROR'"> <li style="background-color: #FFBBBB"><s:property value="message" /></li> </s:elseif> </s:iterator> </ul> </div> </s:if>
This is the layout page I am including the above file in (waitlayout.jsp):
<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%> <%@ taglib prefix="s" uri="/struts-tags"%> <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="refresh" content="5;url=<s:url includeParams="all" />" /> <title>${application.title}</title> <style type="text/css">@import url( css/empe.css );</style> </head> <body> <div class="force-scrollbar"> </div> <div class="main"> <div class="content"> <tiles:insertAttribute name="body" /> <tiles:insertAttribute name="viewRequest" /> </div> </div> </body> </html>
This sometimes crashses with the following stack trace:
Caused by: java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
at java.util.AbstractList$Itr.next(AbstractList.java:343)
at org.apache.struts2.components.IteratorComponent.end(IteratorComponent.java:266)
at org.apache.struts2.views.jsp.IteratorTag.doAfterBody(IteratorTag.java:69)
at org.apache.jsp.jsp.fragments.viewrequest_jsp._jspx_meth_s_iterator_0(viewrequest_jsp.java from :177)
at org.apache.jsp.jsp.fragments.viewrequest_jsp._jspx_meth_s_if_0(viewrequest_jsp.java from :108)
at org.apache.jsp.jsp.fragments.viewrequest_jsp._jspService(viewrequest_jsp.java from :67)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:855)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:703)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:660)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:578)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:997)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:682)
at org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:103)
... 112 more
This doesn't happen consistently, but every third or forth run, which is enough to cause problems for users. I don't suspect it is a tiles issue, but appears to be an issue with iterator based on the stack trace.