Erro ao converter int pra string no param

This message was edited 2 times. Last update was at 15/10/2007 15:26:55

como eu faço para converter um int para string nessa pagina
eu possuo o id da cidade do tipo int, mas aqui ele tá dando um erro, acho por que no <f:param tem que ser string o value ou não?

o erro que tá dando é o seguinte:

14/10/2007 15:44:35 org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.ClassCastException: java.lang.Integer
        at com.sun.rave.web.ui.appbase.renderer.CommandLinkRenderer.encodeBegin(CommandLinkRenderer.java:201)
        at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:703)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:463)
        at com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:277)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:721)
        at javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:629)
        at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:566)
        at com.sun.faces.taglib.html_basic.DataTableTag.doEndTag(DataTableTag.java:491)
        at org.apache.jsp.Cidade.listarCidade_jsp._jspx_meth_h_dataTable_0(listarCidade_jsp.java:193)
        at org.apache.jsp.Cidade.listarCidade_jsp._jspx_meth_h_form_0(listarCidade_jsp.java:149)
        at org.apache.jsp.Cidade.listarCidade_jsp._jspx_meth_f_view_0(listarCidade_jsp.java:116)
        at org.apache.jsp.Cidade.listarCidade_jsp._jspService(listarCidade_jsp.java:78)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
        at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)
        at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)
        at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
        at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:198)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at persistencia.Db4oFilter.doFilter(Db4oFilter.java:20)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        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.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)
14/10/2007 15:44:35 org.apache.catalina.core.ApplicationContext log
SEVERE: org.apache.jasper.JasperException: javax.servlet.jsp.JspException: java.lang.Integer
javax.faces.FacesException: org.apache.jasper.JasperException: javax.servlet.jsp.JspException: java.lang.Integer
        at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:351)
        at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)
        at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
        at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:198)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at persistencia.Db4oFilter.doFilter(Db4oFilter.java:20)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        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.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)
Caused by: org.apache.jasper.JasperException: javax.servlet.jsp.JspException: java.lang.Integer
        at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
        at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)
        ... 29 more
14/10/2007 15:44:35 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet Faces Servlet threw exception
com.sun.rave.web.ui.appbase.ApplicationException: org.apache.jasper.JasperException: javax.servlet.jsp.JspException: java.lang.Integer
        at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.cleanup(ViewHandlerImpl.java:559)
        at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:290)
        at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:198)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at persistencia.Db4oFilter.doFilter(Db4oFilter.java:20)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        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.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)
Caused by: javax.faces.FacesException: org.apache.jasper.JasperException: javax.servlet.jsp.JspException: java.lang.Integer
        at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:351)
        at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)
        at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
        ... 27 more
Caused by: org.apache.jasper.JasperException: javax.servlet.jsp.JspException: java.lang.Integer
        at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
        at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)
        ... 29 more

será que tenho que colocar um <f:convertNumber/> dentro do <f:param> ?

o meu jsp é o seguinte:

<h:form>
            <h:dataTable value="#{listaCidade.cidades}" var="cidade">
               <h:column>
                  <f:facet name="header">
                     <h:outputText value="Nome"/>
                  </f:facet>
                  <h:outputText value="#{cidade.nome}"/>
               </h:column>
               <h:column>
                  <f:facet name="header">
                     <h:outputText value="Estado"/>
                  </f:facet>
                  <h:outputText value="#{cidade.estado}"/>
               </h:column>
               <h:column>
                  <f:facet name="header">
                     <h:outputText value="Estado"/>
                  </f:facet>
                  <h:outputText value="#{cidade.estado}"/>
               </h:column>
               <h:column>
                  <f:facet name="header">
                     <h:outputText value="Excluir"/>
                  </f:facet>
                  <h:commandLink immediate="true" action="#{listaCidade.excluir}">
                      <f:param name="excluir" value="#{cidade.id}"/>
                      <h:outputText value="Excluir"/>
                  </h:commandLink>
               </h:column>

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