O método abaixo redireciona para a pagina indicada, quando seleciono outro valor na combo,
Porém o servidor lança a exception abaixo.
1 pergunta: Como resolver a questão da exception?
2 pergunta: Como navegar para outra tela e enviar o parametro idArea senão pela URL como o código abaixo.
Combo
<h:selectOneMenu id="idArea"
immediate="true"
onchange="submit();"
valueChangeListener="#{includeAreaBean.valueChangeFiltroArea}">
<f:selectItems value="#{includeAreaBean.listaAreaSelectItem}" />
</h:selectOneMenu>
</h:form>
Método.
public void valueChangeFiltroArea(ValueChangeEvent event) {
String idArea = (String) event.getNewValue();
if (idArea != null) {
try {
super.getResponse().sendRedirect("../curso/curso_lista.jsp?idArea=" + idArea);
} catch (IOException ex) {
Logger.getLogger(IncludeAreaBean.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
WARNING: JSF1087: Não foi possível gerar a página de erro de Facelets porque a resposta já foi enviada.
SEVERE: javax.faces.FacesException: PWC1227: Cannot forward after response has been committed
javax.faces.FacesException: PWC1227: Cannot forward after response has been committed
at com.sun.faces.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:136)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException: PWC1227: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:404)
at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:379)
at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:336)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:314)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:542)
at com.sun.faces.application.view.JspViewHandlingStrategy.executePageToBuildView(JspViewHandlingStrategy.java:355)
at com.sun.faces.application.view.JspViewHandlingStrategy.buildView(JspViewHandlingStrategy.java:130)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
... 26 more
