Eclipse vs. (WebCenter) Portlet Tag Library Descriptor

Hi there,
one more question: What's the best way to teach Eclipse WTP about the portlet tag library (http://java.sun.com/portlet_2_0) mandated by JSR 286 and bundled with WebCenter itself? So far, it complains that it 'Can not find the tag library descriptor for "http://java.sun.com/portlet_2_0"')....
For example, where can I find the actual physical TLD file that describes the WebCenter-specific implementation of this library? Or should I use the equivalent TLD coming from another portlet container (e.g. Apache Pluto), instead (while working within Eclipse, at least)?
Thanks in advance,
Chris

I'm not sure that this IDE warning really matters. Things should work fine, when you deploy your portlets into the portal container. But have you tired:
Oracle/Middleware/jdeveloper/webcenter/modules/oracle.portlet.server_11.1.1/oracle-portlet-tags.jar
You'll find a portlet TLD within that jar.
- Micah

Similar Messages

Cannot find the tag library descriptor

I trying to do the Java EE 5 Tutorial. It is called 'hello1' (chapter 2) and it's supposed to run a 'hello duke' program. However it is in Netbeans and I am trying to use ECLIPSE.
I've tried to paste it into Eclipse but I get the following error message:
Cannot find the tag library descriptor for http://java.sun.com/jsp/jstl/core
when trying to include the following taglib:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
Any ideas? I'm sure it's a very basic fix but I am new to Eclipse and web development.
thanks in advance.

Refer to the [link|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/804bedee-377e-2e10-0f83-d5b33c743dbc?QuickLink=index&overridelayout=true] for creating layouts.
Check whether sharing reference and other details in portalapp.xml are correct.
Regards,
Mahesh

The tag handler gridcolumn does not have a setter for the attribute autoExpand specified in the Tag Library Descriptor.

I recently moved from coldfusion 8 to coldfusion 9 but all the pages with cfgrid: is throwing the following error. Any suggestion would be of great help
coldfusion.jsp.JRunTagLibraryInfo$NoSuchAttributeException: The tag handler gridcolumn does not have a setter for the attribute autoExpand specified in the Tag Library Descriptor.
at coldfusion.jsp.JRunTagLibraryInfo.getPropertyType(JRunTagLibraryInfo.java:627)
at coldfusion.jsp.JRunTagLibraryInfo.buildTagInfo(JRunTagLibraryInfo.java:585)
at coldfusion.jsp.JRunTagLibraryInfo.getTag(JRunTagLibraryInfo.java:267)
at coldfusion.compiler.NeoTranslationContext.findTagName(NeoTranslationContext.java:346)
at coldfusion.compiler.NeoTranslationContext.isKnownTag(NeoTranslationContext.java:222)
at coldfusion.compiler.CFMLParserBase.isKnownTagName(CFMLParserBase.java:589)
at coldfusion.compiler.cfml40TokenManager.TokenLexicalActions(cfml40TokenManager.java:6704)
at coldfusion.compiler.cfml40TokenManager.getNextToken(cfml40TokenManager.java:6586)
at coldfusion.compiler.cfml40.getToken(cfml40.java:11879)
at coldfusion.compiler.CFMLParserBase.isTrivialAngleBracket(CFMLParserBase.java:707)
at coldfusion.compiler.cfml40.jj_3_1(cfml40.java:9392)
at coldfusion.compiler.cfml40.jj_3_2(cfml40.java:9460)
at coldfusion.compiler.cfml40.jj_3R_67(cfml40.java:9500)
at coldfusion.compiler.cfml40.jj_3_86(cfml40.java:8147)
at coldfusion.compiler.cfml40.jj_3R_92(cfml40.java:8584)
at coldfusion.compiler.cfml40.jj_3_85(cfml40.java:8641)
at coldfusion.compiler.cfml40.jj_2_85(cfml40.java:7619)
at coldfusion.compiler.cfml40.cfml(cfml40.java:4215)
at coldfusion.compiler.cfml40.cfif(cfml40.java:311)
at coldfusion.compiler.cfml40.cfml(cfml40.java:4224)
at coldfusion.compiler.cfml40.cfif(cfml40.java:311)
at coldfusion.compiler.cfml40.cfml(cfml40.java:4224)
at coldfusion.compiler.cfml40.cfelse(cfml40.java:442)
at coldfusion.compiler.cfml40.cfelseif(cfml40.java:374)
at coldfusion.compiler.cfml40.cfif(cfml40.java:314)
at coldfusion.compiler.cfml40.cfml(cfml40.java:4224)
at coldfusion.compiler.cfml40.start(cfml40.java:4664)
at coldfusion.compiler.NeoTranslator.parsePage(NeoTranslator.java:667)
at coldfusion.compiler.NeoTranslator.parsePage(NeoTranslator.java:648)
at coldfusion.compiler.NeoTranslator.parseAndTransform(NeoTranslator.java:401)
at coldfusion.compiler.NeoTranslator.translateJava(NeoTranslator.java:343)
at coldfusion.compiler.NeoTranslator.translateJava(NeoTranslator.java:144)
at coldfusion.runtime.TemplateClassLoader$TemplateCache$1.fetch(TemplateClassLoader.java:418 )
at coldfusion.util.LruCache.get(LruCache.java:180)
at coldfusion.runtime.TemplateClassLoader$TemplateCache.fetchSerial(TemplateClassLoader.java :362)
at coldfusion.util.AbstractCache.fetch(AbstractCache.java:58)
at coldfusion.util.SoftCache.get_statsOff(SoftCache.java:133)
at coldfusion.util.SoftCache.get(SoftCache.java:81)
at coldfusion.runtime.TemplateClassLoader.findClass(TemplateClassLoader.java:591)
at coldfusion.filter.PathFilter.invoke(PathFilter.java:80)
at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70)
at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:2 8)
at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46)
at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
at coldfusion.filter.CachingFilter.invoke(CachingFilter.java:53)
at coldfusion.CfmServlet.service(CfmServlet.java:201)
at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)
at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )
at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)
at jrun.servlet.FilterChain.service(FilterChain.java:101)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

Thanks Vishu,
We are running Coldfusion 9 and attach is the sample code and error message.:
The tag handler gridcolumn does not have a setter for the attribute autoExpand specified in the Tag Library Descriptor.
The CFML compiler was processing:
A cfgrid tag beginning on line 39, column 18.
The error occurred in E:/Websites/DreData/sobrietytesting/main/Sobrietytesting/Admin/view_users.cfm: line 54
52 :                     hrefkey="member_id"
53 :                     bind="cfc:tabledisplay.browseAccessAcountRequests(,,,)"
54 :                     >
55 :

Error while parsing the Tag Library Descriptor

Hi,
We are installing LC ES2 on Suse64 / weblogic platform. When the adobe-conmtentservices application is starting, we see a lot od error like this:
<Mar 24, 2010 10:56:53 AM CET> <Warning> <HTTP> <BEA-101196> <[/contentspace]: Error while parsing the Tag Library Descriptor at "/opt/oracle/product/WLS1031/user_projects/domains/LC9/servers/LC9_MS/tmp/_WL_user/adobe- contentservices/4xxkue/war/WEB-INF/contentservices.tld".
com.ctc.wstx.exc.WstxIOException: Tried all: '1' addresses, but could not connect over HTTP to server: 'java.sun.com', port: '80'
 at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:683)
 at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
 at weblogic.servlet.internal.TldCacheHelper$TldIOHelper.parseXML(TldCacheHelper.java:134)
 at weblogic.descriptor.DescriptorCache.parseXML(DescriptorCache.java:380)
 at weblogic.servlet.internal.TldCacheHelper.parseTagLibraries(TldCacheHelper.java:65)
 Truncated. see log file for complete stacktrace
java.net.ConnectException: Tried all: '1' addresses, but could not connect over HTTP to server: 'java.sun.com', port: '80'
 at weblogic.net.http.HttpClient.openServer(HttpClient.java:314)
 at weblogic.net.http.HttpClient.openServer(HttpClient.java:404)
 at weblogic.net.http.HttpClient.New(HttpClient.java:240)
 at weblogic.net.http.HttpURLConnection.connect(HttpURLConnection.java:172)
 at weblogic.net.http.HttpURLConnection.getInputStream(HttpURLConnection.java:356)
 Truncated. see log file for complete stacktrace
The application tries to download something from java.sun.com site but the server can not access internet. The process is repeated for each TLD file !
After a very time (more than 45 minutes!), the server finally starts and all adobe application are active
So, how to correct this behaviror ? is there a patch?
cb.

Hi,
Did you get solution for this because I am also facing same issue. Please do reply ASAP... it is very uegent.
Regards,
Srujan

Tag Library Descriptor

I am trying to use the dbtags from Jakarta using Tomcat and MySQL. When I try to call my ASP I keeping getting an error that says:
Unable to open taglibrary /WEB-INF/mytaglib.tld : Parse Error in the tag library descriptor: External entity not found: "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd".
Here is what my ASP looks like:
package tags;
import java.io.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
public class HelloTag implements Tag {
private PageContext pageContext;
private Tag parent;
public HelloTag() {
super();
public int doStartTag() throws JspException {
try {
pageContext.getOut().print(
"This is my first tag!");
} catch (IOException ioe) {
throw new JspException("Error:IOException while writing to client" + ioe.getMessage());
return SKIP_BODY;
public int doEndTag() throws JspException {
return SKIP_PAGE;
public void release() {
public void setPageContext(PageContext
pageContext) {
this.pageContext = pageContext;
public void setParent(Tag parent) {
this.parent = parent;
public Tag getParent() {
return parent;

Here is what my jsp looks like:
<%@ taglib uri="/WEB-INF/mytaglib.tld"
prefix="first" %>
<HTML>
<HEAD>
<TITLE>Hello Tag</TITLE>
</HEAD>
<BODY bgcolor="#ffffcc">
My first tag prints:
<first:hello/>
</BODY>
</HTML>

Tag Library Descriptor (TLD) file

In a Tag Library Descriptor (TLD) file, what does the tag
<rtexprvalue>false</rtexprvalue> mean when
applied to a tag's attribute?

http://java.sun.com/webservices/docs/1.0/tutorial/doc/JSPTags5.html#66591
If the value is false, then a literal value must be supplied for the tag value, expressions or dynamic values cannot be used.

JSPDynPage : Cannot find the tag library descriptor for tagLib

Hi,
I'm working JSPDynPage and i have error in IDE at design time.
i just created one JSPDynPage component. and an error is shown at the uri="tagLib"
<%@ taglib uri="tagLib" prefix="hbj" %>
The problem is that the word 'tagLib' is marked and has the hoovering text "Cannot find the tag library descriptor for tagLib". Why is this? Do I have to do add some dc dependency ? Or is there another cause for this problem?
I am working with CE 7.2 .
portalapp.xml
<?xml version="1.0" encoding="utf-8"?>
<application>
<application-config>
 <property name="SharingReference" value="com.sap.portal.htmlb"/>
</application-config>
<components>
 <component name="GCPPURLJSP">
 <component-config>
 <property name="ClassName" value="com.cts.gc.GCPPURLJSP"/>
 <property name="SecurityZone" value="com.cts.gc/low_safety"/>
 </component-config>
 <component-profile>
 <property name="tagLib" value="/SERVICE/com.sap.portal.htmlb/taglib/htmlb.tld"/>
 </component-profile>
 </component>
</components>
<services/>
</application>
Best regards
Pavan

Hi Pavan,
For using htmlb, you can use another tag library. Use the below code in your jsp
<%@ taglib uri = "prt:taglib:tlhtmlb" prefix="hbj" %>
And in portalapp.xml, replace the <property> of <component-profile> with the below line.
<property name="tlhtmlb" value="/SERVICE/com.sap.portal.htmlb/taglib/htmlb.tld">
Also, you may need to add the import statement for htmlb, if not done earlier -
<%@ page import = "com.sapportals.htmlb.*" %>

Cannot find the tag library descriptor Error

Hi
In SAP Netweaver Developer Studio 7.3 SP 03, i am facing the following problems:
- When compiling JSP portal applications i am having problems using SAP tag library's or classes. Do i need to configure the class path for a specific path in the server?
Error: Can not find the tag library descriptor for "LayoutTagLibrary"
Portalapp.xml
<property name="LayoutTagLibrary" value="/SERVICE/com.sap.portal.pagebuilder/taglib/layout.tld"/>
JSP
<%@ taglib uri="LayoutTagLibrary" prefix="lyt" %>
Regards
Eben Joyson

Refer to the [link|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/804bedee-377e-2e10-0f83-d5b33c743dbc?QuickLink=index&overridelayout=true] for creating layouts.
Check whether sharing reference and other details in portalapp.xml are correct.
Regards,
Mahesh

Error in tag library descriptor in iplanet 6.1 service park 4

Hi Guys,
Im getting this exception from my jsp deployed to SunOne Web Server 6.1 (or Iplanet 6.1 as others know) service pack 4
org.apache.jasper.JasperException: WEB4083: No such tag bundle in the tag library imported with prefix i18n
I already toggle between actions below:
1. By referring to specific tld from WEB-INF/ in the JSP
<%@taglib prefix="i18n" uri="/WEB-INF/tlds/taglibs-i18n.tld"%>
note: the needed library file is already in WEB-INF/lib/
2. Invoking this line (this is only available for Servlet 2.3 and 2.4 specifications)
<%@taglib prefix="i18n" uri="http://jakarta.apache.org/taglibs/i18n-1.0"%>
note: the needed library file is already in WEB-INF/lib/
3. Invoking this line (if not Servlet 2.3 and 2.4 specifications)
<%@taglib prefix="i18n" uri="http://jakarta.apache.org/taglibs/i18n-1.0"%>
added lines below in web.xml:
BEGIN
<taglib>
<taglib-uri>http://jakarta.apache.org/taglibs/i18n-1.0</taglib-uri>
<taglib-location>/WEB-INF/taglibs-i18n.tld</taglib-location>
</taglib>
END
note: the needed library file is already in WEB-INF/lib/
4. By referring directly to the specific jar file from WEB-INF/lib/ in the JSP
<%@ taglib prefix="i18n" uri="/WEB-INF/lib/taglibs-i18n.jar"%>
Please help.
Thanks,
Eson.

Use this :
<taglib>
<taglib-uri>http://jakarta.apache.org/taglibs/i18n-1.0</taglib-uri>
<taglib-location>/WEB-INF/i18n.tld</taglib-location>
</taglib>
in your web.xml file

Portlet tag library

Hi,
What's the different between using "portlet" or "webflow"
in following tag libraey to create a flow?
<portlet:createWebflowURL...
<webflow:createWebflowURL...
Thanks a lot

david wrote:
Hi,
What's the different between using "portlet" or "webflow"
in following tag libraey to create a flow?
<portlet:createWebflowURL...
<webflow:createWebflowURL...
Thanks a lotThe first tag is webflow associated portlets while the second is for the
usual webflow (outside portal).
Subbu

Taglibs??? Where is the Portlet Tag Library PLT.22

Hi,
I've not found any examples of JSP portlets using the Portlet TagLib.
Actually, I'm trying to take the Sun's JSR168 compliant Portlets and use them
into the WLP.
Thanks
Julien

Download WebLogic Platform 8.1 SP2
(http://commerce.bea.com/showproduct.jsp?family=WLP&major=8.1&minor=2).
This release includes a supported implemenation of JSR168 (based on the
final specification).
Subbu
Julien De Santis-Caron said the following on 12/18/2003 02:45 PM:
Hi,
I've not found any examples of JSP portlets using the Portlet TagLib.
Actually, I'm trying to take the Sun's JSR168 compliant Portlets and use them
into the WLP.
Thanks
Julien

Tag Library Error

I am using Jdeveloper and BEA Weblogic 8.1 application server environment.
I have custom tag and tld file for the tag. When I try to compile it , I am getting this error which just points to the begininng of the jsp file which uses the tag.
Error: java.lang.NoSuchMethodError: javax.servlet.jsp.tagext.TagAttributeInfo.<init>(Ljava/lang/String;ZLjava/lang/String;ZZ)V
I've tried searching online and found that it may be caused by the the wrong jar reference in classpath. I've tried adding whole bunch of different versions of servlet.jar to my classpath in the project properties but I am still getting the same error.
Please advice
Mikhail

I've tried putting weblogic.jar into the web-inf/lib folder and also added library reference in the project properties but that did not fixed it.
I still receive this error in all jsp files where I have a tag:
Error: java.lang.NoSuchMethodError: javax.servlet.jsp.tagext.TagAttributeInfo.<init>(Ljava/lang/String;ZLjava/lang/String;ZZ)V
Here's the content of my simple tld file:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">

<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.1</jsp-version>
<short-name>Bima Tags</short-name>
<description>Application tag library for the BIMA Application</description>
<tag>
<name>navbar</name>
<tag-class>com.arrownacp.bima.tags.NavBarTag</tag-class>
<body-content>empty</body-content>
<description>Display the Navigation Bar</description>
<attribute>
<name>pageName</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
<type>java.lang.String</type>
</attribute>
</tag>
</taglib>
This is how I refer to it in my jsp file:
<%@ taglib uri="WEB-INF/BimaTags.tld" prefix="es" %>
and in the page body:
<es:navbar pageName="addUser" />
Need an urgent help, thanks
Mikhail

Tag Library Compile Warning

Why does the weblogic jsp compiler wine about this standard tag library
 descriptor DTD?
 <?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">
 Have yet to see a TLD that does not use precisely this string and yet
 weblogic whines constantly about it.


I figured it out. Under the Configuration/TagLibraries,
create a CrossTagAttr folder and stick a .vtm file in it. In the
.vtm file, use the <crosstag_attributes> tag and its
children. See Configuration/TagLibraries/CrossTagAttr/Spry/Spry.vtm
for an example.

JSP Tag library

I keep getting this error when I try to transform an xml file into html.
org.apache.jasper.JasperException: Unable to open taglibrary http://jakarta.apache.org/taglibs/xsl-1.0 : null
Here is the jsp file
<%@taglib uri="http://jakarta.apache.org/taglibs/xsl-1.0"
prefix="xsltlib" %>
<html>
<head>
<title>Book Inventory</title>
</head>
<body bgcolor="white">
<center>
Welcome

On Sale Today ...


<xsltlib:apply xml="cdcatalog.xml" xsl="cdcatalog.xsl"/>
</center>
</body>
</html>

I think first od all you have to download the Tag Libraray from this location
http://jakarta.apache.org/builds/jakarta-taglibs/nightly/projects/xsl/
and then configer you web application like
Follow these steps to configure your web application with this tag library:
* Copy the tag library descriptor file (xsl/xsl.tld) to the /WEB-INF subdirectory of your web application.
* Copy the tag library JAR file (xsl/xsl.jar) to the /WEB-INF/lib subdirectory of your web application.
* Copy the support libs xerces.jar and xalan.jar to the /WEB-INF/lib directory of your web application.
* Add a <taglib> element to your web application deployment descriptor in /WEB-INF/web.xml like this:
<taglib>
<taglib-uri>http://jakarta.apache.org/taglibs/xsl-1.0</taglib-uri>
<taglib-location>/WEB-INF/xsl.tld</taglib-location>
</taglib>
To use the tags from this library in your JSP pages, add the following directive at the top of each page:
<%@ taglib uri="http://jakarta.apache.org/taglibs/xsl-1.0" prefix="x" %>

Problem using custom tag library in portlet's jsp

Hi,
I created a custom portlet (a JSR 168 portlet) and I'm using a tag library that I previously developed. Normally it works fine, but sometimes I get a ClassCastException. Once I redeploy the portlet everything works again. This is Oracle Portal 10.1.4.
Has anybody encountered similar problems?
Here's the exception:
taglib exception:
java.lang.ClassCastException at timecardreminderportlet.html._view._jspService(_view.java:201) at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:350) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:824) at com.evermind.server.http.ServletRequestDispatcher.include(ServletRequestDispatcher.java:121) at oracle.webdb.wsrp.server.RequestDispatcherImpl.include(Unknown Source) at org.mitre.isis.trs.reminder.portlet.TimecardReminderPortlet.doDispatch(TimecardReminderPortlet.java:108) at javax.portlet.GenericPortlet.render(Unknown Source) at oracle.webdb.wsrp.server.Server.getMarkup(Unknown Source) at oracle.webdb.wsrp.WSRP_v1_Markup_PortType_Tie.invoke_getMarkup(WSRP_v1_Markup_PortType_Tie.java:224) at oracle.webdb.wsrp.WSRP_v1_Markup_PortType_Tie.processingHook(WSRP_v1_Markup_PortType_Tie.java:499) at com.sun.xml.rpc.server.StreamingHandler.handle(StreamingHandler.java:230) at com.sun.xml.rpc.server.http.ea.JAXRPCServletDelegate.doPost(JAXRPCServletDelegate.java:153) at com.sun.xml.rpc.server.http.JAXRPCServlet.doPost(JAXRPCServlet.java:69) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65) at oracle.webdb.wsrp.server.ContextFilter.doFilter(Unknown Source) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:663) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:224) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:133) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192) at java.lang.Thread.run(Thread.java:534)

Hi,
I created a custom portlet (a JSR 168 portlet) and I'm using a tag library that I previously developed. Normally it works fine, but sometimes I get a ClassCastException. Once I redeploy the portlet everything works again. This is Oracle Portal 10.1.4.
Has anybody encountered similar problems?
Here's the exception:
taglib exception:
java.lang.ClassCastException at timecardreminderportlet.html._view._jspService(_view.java:201) at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:350) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:824) at com.evermind.server.http.ServletRequestDispatcher.include(ServletRequestDispatcher.java:121) at oracle.webdb.wsrp.server.RequestDispatcherImpl.include(Unknown Source) at org.mitre.isis.trs.reminder.portlet.TimecardReminderPortlet.doDispatch(TimecardReminderPortlet.java:108) at javax.portlet.GenericPortlet.render(Unknown Source) at oracle.webdb.wsrp.server.Server.getMarkup(Unknown Source) at oracle.webdb.wsrp.WSRP_v1_Markup_PortType_Tie.invoke_getMarkup(WSRP_v1_Markup_PortType_Tie.java:224) at oracle.webdb.wsrp.WSRP_v1_Markup_PortType_Tie.processingHook(WSRP_v1_Markup_PortType_Tie.java:499) at com.sun.xml.rpc.server.StreamingHandler.handle(StreamingHandler.java:230) at com.sun.xml.rpc.server.http.ea.JAXRPCServletDelegate.doPost(JAXRPCServletDelegate.java:153) at com.sun.xml.rpc.server.http.JAXRPCServlet.doPost(JAXRPCServlet.java:69) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65) at oracle.webdb.wsrp.server.ContextFilter.doFilter(Unknown Source) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:663) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:224) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:133) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192) at java.lang.Thread.run(Thread.java:534)

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