Pegar uma coluna da Entidade e jogar dentro do selectOneMenu

Fastex · Maio 2, 2013, 12:56pm

Bom dia!

Galera eu estou precisando de umas dicas. Estou fazendo uma tela de cadastro porem algumas informações como estados, tipo de endereço prefiro colocar no <h:selectOneMenu para evitar erros de digitação e tambem o select vai 27 linhas de codigo, no de tipo mais 44 e quando coloco pais mais 260 linhas de codigo tudo no xhtml. Pensei em fazer o seguinte esquema: gravar tudo no banco e ficar buscando as colunas e exibindo no <p:selectOneMenu.
Dai começou as dores de cabeça.

segue abaixo o meu codigo.

DAO

public List<Estado> getEstado() { sessao = HibernateUtil.getSessionFactory().openSession(); Query query = sessao.createQuery("select uf from Estado"); return query.list(); }

Controller

[code]public List getItem() {
SelectItem selectItem = new SelectItem();
List list = new ArrayList();

	list = estadoDAO.getEstado();

	for (Estado e : list) {
		selectItem.setValue(e.getUf());
		selectItem.setLabel(e.getUf());
		item.add(selectItem);
	}
	return item;
}[/code]

.xhtml

<h:selectOneMenu id="txt_tipo" value="#{item.endereco.tipo}"> <f:selectItem itemLabel="Selecione" itemValue="Selecione" /> <f:selectItems value="#{uf.item}" />//lembrando que esse "uf" é outro controller , diferente do controller item </h:selectOneMenu>

que resulta no erro 500

[code]javax.servlet.ServletException: java.lang.String cannot be cast to br.com.nksys.bean.Estado
javax.faces.webapp.FacesServlet.service(FacesServlet.java:606)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:344)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:110)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:98)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:95)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:79)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:113)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:55)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:36)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:150)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)

root cause

java.lang.ClassCastException: java.lang.String cannot be cast to br.com.nksys.bean.Estado
br.com.nksys.web.ListaEstadosController.getItem(ListaEstadosController.java:25)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
javax.el.BeanELResolver.getValue(BeanELResolver.java:87)
com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
org.apache.el.parser.AstValue.getValue(AstValue.java:183)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)
com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
javax.faces.component.UISelectItems.getValue(UISelectItems.java:129)
com.sun.faces.renderkit.SelectItemsIterator.initializeItems(SelectItemsIterator.java:202)
com.sun.faces.renderkit.SelectItemsIterator.hasNext(SelectItemsIterator.java:135)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:761)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:843)
com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:297)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:63)
org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:47)
org.primefaces.component.panel.PanelRenderer.encodeContent(PanelRenderer.java:202)
org.primefaces.component.panel.PanelRenderer.encodeMarkup(PanelRenderer.java:119)
org.primefaces.component.panel.PanelRenderer.encodeEnd(PanelRenderer.java:56)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
org.primefaces.component.tabview.TabViewRenderer.encodeTabContent(TabViewRenderer.java:279)
org.primefaces.component.tabview.TabViewRenderer.encodeContents(TabViewRenderer.java:237)
org.primefaces.component.tabview.TabViewRenderer.encodeMarkup(TabViewRenderer.java:127)
org.primefaces.component.tabview.TabViewRenderer.encodeEnd(TabViewRenderer.java:71)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)
org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:59)
org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:47)
org.primefaces.component.panel.PanelRenderer.encodeContent(PanelRenderer.java:202)
org.primefaces.component.panel.PanelRenderer.encodeMarkup(PanelRenderer.java:119)
org.primefaces.component.panel.PanelRenderer.encodeEnd(PanelRenderer.java:56)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:437)
com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:124)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:344)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:110)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:98)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:95)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:79)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:113)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:55)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:36)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:150)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
[/code]

Alguem pode me dar uma ajuda plz?

system · Dezembro 30, 2015, 2:21pm

Pegar uma coluna da Entidade e jogar dentro do selectOneMenu

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