Ensure that your class members all have getters, since person.language.localeName will call
person.getLanguage().getLocaleName() Allistair. > -----Original Message----- > From: Martyn Hiemstra [mailto:[EMAIL PROTECTED] > Sent: 22 August 2005 09:55 > To: Tomcat Users List > Subject: Re: Java 1.4.2_08 and up breaks Jstl > > > Hi All > > First of all my jsp file looks like this > > Contents Jsp File: > <%@ page language="java" %> > <%@ page contentType="text/html; charset=UTF-8" %> > <%@ taglib uri="http://java.sun.com/jstl/fmt"; prefix="fmt" %> > <%@ taglib uri="http://java.sun.com/jstl/core"; prefix="c" %> > > <c:out value="${person.language.localeName}" /> > > The error occures on the line with the person.language.localeName. > Person is a object in the session. The code prints the locale > name the > person has chosen. > > System > Debian Sarge > > Tomcat: > Tomcat 5.0.27 (I have also tried 5.0.28) > > Java > I have Java j2sdk 1.4.2_05 installed under /opt/j2sdk1.4.2_05. I have > created a sym link from /opt/java to /opt/j2sdk1.4.2_05. > I have JAVA_HOME point to /opt/java. > > > This runs perfectly. I then install j2sdk 1.4.2_08 under /opt > and then > have /opt/java point to /opt/j2sdk1.4.2_08. > > I stop tomcat. Wait and check to see that no occurance is > running in the > memory anymore. I then start up tomcat. When calling the same > jsp file > that worked with the previous version of Java I get this error in the > catalina.out: > 2005-08-11 11:37:06 StandardWrapperValve[jsp]: Servlet.service() for > servlet jsp threw exception > javax.servlet.jsp.JspException: An error occurred while evaluating > custom action attribute "value" with value > "${person.language.localeName}": Unable to find a value for > "language" > in object of class "com.jatse.api.User" using operator "." (null) > at > org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evalu > ator.java:146) > at > org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evalu > ator.java:166) > at > org.apache.taglibs.standard.lang.support.ExpressionEvaluatorMa > nager.evaluate(ExpressionEvaluatorManager.java:112) > at > org.apache.taglibs.standard.tag.el.fmt.SetLocaleTag.evaluateEx > pressions(SetLocaleTag.java:141) > at > org.apache.taglibs.standard.tag.el.fmt.SetLocaleTag.doStartTag > (SetLocaleTag.java:101) > at > org.apache.jsp.index_jsp._jspx_meth_fmt_setLocale_0(index_jsp. > java:146) > at org.apache.jsp.index_jsp._jspService(index_jsp.java:100) > at > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServlet > Wrapper.java:324) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet > .java:292) > at > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt > er(ApplicationFilterChain.java:237) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli > cationFilterChain.java:157) > at > com.jatse.website.filters.PersonFilter.doFilter(PersonFilter.java:42) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt > er(ApplicationFilterChain.java:186) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli > cationFilterChain.java:157) > at > com.jatse.website.filters.SetCharacterEncodingFilter.doFilter( SetCharacterEncodingFilter.java:128) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilt > er(ApplicationFilterChain.java:186) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli > cationFilterChain.java:157) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardW > rapperValve.java:214) > at > org.apache.catalina.core.StandardValveContext.invokeNext(Stand > ardValveContext.java:104) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel > ine.java:520) > at > org.apache.catalina.core.StandardContextValve.invokeInternal(S > tandardContextValve.java:198) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardC > ontextValve.java:152) > at > org.apache.catalina.core.StandardValveContext.invokeNext(Stand > ardValveContext.java:104) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel > ine.java:520) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHost > Valve.java:137) > at > org.apache.catalina.core.StandardValveContext.invokeNext(Stand > ardValveContext.java:104) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReport > Valve.java:117) > at > org.apache.catalina.core.StandardValveContext.invokeNext(Stand > ardValveContext.java:102) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel > ine.java:520) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEn > gineValve.java:109) > at > org.apache.catalina.core.StandardValveContext.invokeNext(Stand > ardValveContext.java:104) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipel > ine.java:520) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) > at > org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter. > java:160) > at > org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300) > at > org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374) > at > org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743) > > I see a blank page in the browser by the way. > > You might thing ok there is something wrong with the User class. So I > added some extra lines before the jstl call: > > <% > // Person is a super class of User so casting the object > to a Person > object will do. > Person person = (Person)session.getAttribute("person"); > System.out.println("Language = " + > person.getLanguage().getLocaleName()); > %> > > Language = EN appears in the catalina out, so you can > conclude that the > jsp code can read the Language locale name in User but jstl cant. > > I then had /opt/java point back to /opt/j2sdk1.4.2_05 and restarted > tomcat. I then call the same webpage and the now the page works. > > My conclusion is that jstl in combination with j2sdk > 1.4.2_08 or higher > is impossible. For some reason they wont work together. > > Thanks in advance for any help you could offer, > Martyn > > > > It would probably help, if you would describe what you did > (i.e. what > > is your source code, your environment, tomcat version , > etc.) and what > > does mean "the bug happens" (i.e. error messages, stack > traces, etc.) > > > > Now we have just the analogue of "My car works on road a but not on > > road b. Do you know what is wrong?" > > > > Christoph > > > > Martyn Hiemstra wrote: > > > >> Hi > >> > >> > >>> Do you have a link to a Sun Bugparade entry describing > the problem? > >> > >> > >> No I don't. > >> > >> I have performed a test of my own. > >> > >> I have installed j2sdk 1.4.2_05 and j2sdk 1.4.2_08 and > j2sdk 1.4.2_09. > >> I have installed these to the /opt directory. I have my JAVA_HOME > >> pointed > >> to /opt/java. > >> > >> First I point /opt/java to /opt/j2sdk1.4.2_09 and restart > tomcat. The > >> bug > >> happens again. I then point /opt/java to > /opt/j2sdk1.4.2_08. I restart > >> tomcat and the same bug occures. I then point /opt/j2sdk1.4.2_05 to > >> /opt/java, restart tomcat and BINGO no bug. Apparently > versions java > >> 2 sdk > >> 1.4.2_09 and java 2 sdk 1.4.2_08 cause the bug to occure > just as in the > >> forum thread. > >> > >> I have tried a different tomcat version but no luck. > >> > >> Any ideas anybody? Maybe a configuration change that has > occured in the > >> new java versions? > >> > >> Martyn > >> > >> > >>> Hi, > >>> > >>> I'm not convinced by that forum thread. > >>> It's very hard to believe that there is such a severe bug in Java > >>> 1.4.2_06 *that isn't fixed yet* > >>> > >>> Do you have a link to a Sun Bugparade entry describing > the problem? > >>> > >>> > >>> Christoph > >>> > >>> Martyn Hiemstra wrote: > >>> > >>>> Hi All > >>>> > >>>> I have found a Bug in Java 1.4.2_08 and Java 1.4.2_09. > >>>> > >>>> Goto this address to read about it: > >>>> http://forum.java.sun.com/thread.jspa?threadID=599301&tstart=0 > >>>> > >>>> The new versions will break your jstl code and create > errors in the > >>>> log > >>>> and create blank pages. > >>>> > >>>> I have tried a new Tomcat version, no luck. I had it running on > >>>> another > >>>> server but that server is running on Java 1.4.2_05. > >>>> > >>>> So just a tip. Dont install Java 1.4.2_08 or higher. It > will kill your > >>>> application if your using jstl. > >>>> > >>>> Martyn > >>>> > >>>> > >>>> > --------------------------------------------------------------------- > >>>> To unsubscribe, e-mail: > [EMAIL PROTECTED] > >>>> For additional commands, e-mail: > [EMAIL PROTECTED] > >>>> > >>> > >>> > >>> > --------------------------------------------------------------------- > >>> To unsubscribe, e-mail: [EMAIL PROTECTED] > >>> For additional commands, e-mail: > [EMAIL PROTECTED] > >>> > >>> > >> > >> > >> > >> > >> > --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: > [EMAIL PROTECTED] > >> > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > <FONT SIZE=1 FACE="VERDANA,ARIAL" COLOR=BLUE> ------------------------------------------------------- QAS Ltd. Registered in England: No 2582055 Registered in Australia: No 082 851 474 ------------------------------------------------------- </FONT> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
