Question

这是我的删除代码：

                       <!--Borrar Asesor-->
                        <p:column headerText="Eliminar" exportable="false" style="width:80px">
                            <p:commandButton value="Eliminar" update="asesorTable" oncomplete="PF('dlg').show();" immediate="true">
                                <f:setPropertyActionListener value="#{asesor}" target="#{eliminarAsesorManagedBean.selectedAsesor}" />
                            </p:commandButton>
                        </p:column>
                        <!--Fin Borrar Asesor-->

这是我的确认对话框：

<!--Borrar Asesor Dialogo-->
            <p:dialog id="dlg" widgetVar="dlg" header="Eliminar" modal="true" resizable="false" minWidth="160">
                <h:form id="formEliminar">
                    <h:outputText value="¿Desesa eliminar?"/>
                    <p:commandButton value="Si" actionListener="#{eliminarAsesorManagedBean.eliminarAsesor()}" 
                                     oncomplete="dlg.hide()"/>
                    <p:commandButton value="No" onclick="dlg.hide();"/>
                </h:form>
            </p:dialog>
            <!--Fin Borrar Asesor Dialogo-->

这是我的Managed Bean：

 public class EliminarAsesorManagedBean {
private Asesor selectedAsesor;
@Inject //Inyección de implementación 
private AsesorService asesorService;

public Asesor getSelectedAsesor() {
    return selectedAsesor;
}

public void setSelectedAsesor(Asesor selectedAsesor) {
    this.selectedAsesor = selectedAsesor;
}

public EliminarAsesorManagedBean() {
}

public void eliminarAsesor() throws IOException {
    asesorService.eliminarAsesor(selectedAsesor);
    ExternalContext con = FacesContext.getCurrentInstance().getExternalContext();
    con.redirect("administrarAsesores.xhtml");
}}

问题是当我在确认对话框中按“Si”时，日志发送错误：

attempt to create delete event with null entity

没有确认对话框，代码删除正常。我正在使用NetBeans 8.2，Primefaces 6.0和Hibernate 4.3

Answer 1

我解决了我的问题，我改变了这个：

@Named(value = "eliminarAsesorManagedBean")
@RequestScoped

要：

@ManagedBean(name = "eliminarAsesorManagedBean")
@ViewScoped

Primefaces确认对话框未删除

1 个答案: