Yeah got it, thanks for that. I've managed to get it running whilst populating from a db so I'm getting there. Thanks a lot guys.
Kevin Galligan-2 wrote: > > Nice catch. There's no "new ArrayList()". > > Mark, try finding the log with a NullPointerException in it related to > this. In the future, look in that log to find the root exception. > > On 8/21/06, Appachi, Kannan <[EMAIL PROTECTED]> wrote: >> >> Is it because countryList is missing object initialization.I did not >> find >> a place where its initialized.. >> >> >> >> ------------------------------ >> *From:* Kevin Galligan [mailto:[EMAIL PROTECTED] >> *Sent:* Monday, August 21, 2006 3:27 PM >> *To:* MyFaces Discussion >> *Subject:* Re: Newbie Question >> >> If you dig around in the logs, there's generally the root exception that >> caused the issue. Try looking around for that. Otherwise we're flying >> blind. >> >> I'd also suggest posting what '#{country.selectedCountry}' points to. >> Its >> not in the class. If this doesn't exist, its possible that JSF is >> getting >> upset because it wants to convert the type of the SelectItem, but doesn't >> really have a target type, so it fails or whatever. >> >> Regardless you need that value available. >> >> On 8/21/06, tukutela <[EMAIL PROTECTED]> wrote: >> > >> > >> > Sorry all, the bean.list was mean to be an example, typing too quickly. >> > >> > Here's the error from console. >> > 21-Aug-2006 3:16:04 PM >> org.apache.catalina.core.StandardWrapperValveinvoke >> > SEVERE: Servlet.service() for servlet Faces Servlet threw exception >> > javax.faces.FacesException: Cannot get value for expression >> > '#{country.countryList }' >> > at >> > org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch( >> > ServletExternalContextImpl.java:421) >> > at >> > org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView( >> > JspViewHandlerImpl.java :234) >> > at >> > org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java >> > :352) >> > at javax.faces.webapp.FacesServlet.service(FacesServlet.java >> > :107) >> > at >> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter ( >> > ApplicationFilterChain.java:252) >> > at >> > org.apache.catalina.core.ApplicationFilterChain.doFilter( >> > ApplicationFilterChain.java:173) >> > at >> > org.apache.catalina.core.StandardWrapperValve.invoke( >> > StandardWrapperValve.java :213) >> > at >> > org.apache.catalina.core.StandardContextValve.invoke( >> > StandardContextValve.java:178) >> > at >> > org.apache.catalina.authenticator.AuthenticatorBase.invoke( >> > AuthenticatorBase.java:524) >> > at >> > >> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java >> > :126) >> > at >> > >> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java >> > :105) >> > at >> > org.apache.catalina.core.StandardEngineValve.invoke ( >> > StandardEngineValve.java:107) >> > at >> > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java >> > :148) >> > at >> > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java >> > :869) >> > at >> > >> > >> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection >> > (Http11BaseProtocol.java:664) >> > at >> > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket( >> > PoolTcpEndpoint.java:527) >> > at >> > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt( >> > LeaderFollowerWorkerThread.java:80) >> > at >> > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run( >> > ThreadPool.java:684) >> > at java.lang.Thread.run(Thread.java:595) >> > >> > >> > Kevin Galligan-2 wrote: >> > > >> > > Where's the accessor for 'country.selectedCountry'? >> > > >> > > Also, please post the actual error. After running the thing, look in >> > > tomcat's 'logs' directory, probably the localhost.[date].log file. >> > > >> > > On 8/21/06, tukutela <[EMAIL PROTECTED]> wrote: >> > >> >> > >> >> > >> Hi all, >> > >> >> > >> I'm just starting out with Java/JSF having come from a .net c# >> > >> background. >> > >> I'm having some trouble in starting out with JSF and I was hoping >> > that >> > >> someone can point me in the right direction, this error is driving >> me >> > >> > >> nuts!!! >> > >> >> > >> I'm using MyEclipse and the server is Apache2, Tomcat5.5, and >> MyFaces >> > >> 1.1.1. >> > >> I'm trying to fill a selectOneMenu list using a backend bean and are >> > >> getting >> > >> an error that says that the server cannot get value from expression >> > >> #{bean.list} >> > >> >> > >> Here's the JSP code >> > >> <h:selectOneMenu id="countryListItems" styleClass="lists" >> > >> value="#{country.selectedCountry}"> >> > >> <f:selectItems value="#{ >> > >> country.countryList}" /> >> > >> </h:selectOneMenu> >> > >> >> > >> Here's the Bean >> > >> >> > >> package com.blah.mgr; >> > >> >> > >> public class Country { >> > >> >> > >> private ArrayList<SelectItem> countryList; //variable array >> > list >> > >> to display >> > >> set to countries. >> > >> >> > >> // Constructor, initializes class variables, sets up >> > connection >> > >> with >> > >> database. >> > >> public Country() >> > >> { >> > >> buildList(); >> > >> } >> > >> >> > >> // Returns the arrayList, ensure that the constructor reads >> > the >> > >> database >> > >> first. >> > >> public ArrayList getCountryList() >> > >> { >> > >> return this.countryList; >> > >> } >> > >> >> > >> // Sets the country List (not really required but in here >> > anyway. >> > >> public void setCountryList(ArrayList<SelectItem> >> CountryList) >> > >> { >> > >> this.countryList = CountryList; >> > >> } >> > >> >> > >> private void buildList() >> > >> { >> > >> countryList.add(new SelectItem("Canada", "Canada")); >> > >> countryList.add(new SelectItem("US", "US")); >> > >> } >> > >> } >> > >> >> > >> Here's the link in faces-config.xml: >> > >> <managed-bean> >> > >> <managed-bean-name>country</managed-bean-name> >> > >> <managed-bean-class> com.blah.mgr.Country</managed-bean-class> >> > >> <managed-bean-scope>session</managed-bean-scope> >> > >> </managed-bean> >> > >> >> > >> I'm sure the solution is simple but I've found it difficult to get >> > good >> > >> documentation, might be where I'm looking (or not looking) but I'm >> > still >> > >> getting lost. Any help is greatly appreciated, thanks in advance. >> > >> -- >> > >> View this message in context: >> > >> http://www.nabble.com/Newbie-Question-tf2141924.html#a5912338 >> > >> Sent from the MyFaces - Users forum at Nabble.com. >> > >> >> > >> >> > > >> > > >> > >> > -- >> > View this message in context: >> http://www.nabble.com/Newbie-Question-tf2141924.html#a5913047 >> > >> > Sent from the MyFaces - Users forum at Nabble.com. >> > >> > >> > > -- View this message in context: http://www.nabble.com/Newbie-Question-tf2141924.html#a5926534 Sent from the MyFaces - Users forum at Nabble.com.
