我有以下问题。
有一个带有3个标签的TabView。在每个标签中，我有两个DataTable。如果我在第一个表中选择一行，则相关数据将被加载到第二个表中。 例如（伪代码）：
<form>
<tabview>
<tab>
<datatable>
(data in table A)
<datatable/>
<datatable>
(data that is dynamically loaded if one row in table A is selected)
<datatable/>
<tab/>
<datatable>
........
<datatable/>
<datatable>
........
<datatable/>
<tab/>
<tab>
<datatable>
........
<datatable/>
<datatable>
........
<datatable/>
<tab/>
<tabview/>
<form/>
如果我在第一个表（表A）中选择项目，则相关数据将加载到第二个表格中（如上例所示）。但在我切换到另一个表之前，我必须在第一个表中明确取消选择所选行，以便更新activeIndex，并且将触发支持bean中的取消选择事件，从而清除第二个表中的关联数据。 如果我不进行此取消选择，则tabview中的activeIndex不会更新，我会收到此错误消息。
**
INFO: javax.el.PropertyNotFoundException: /auslegerStativEdit.xhtml @160,66 value="#{dataRowDuesKombi.auslegertyp}": Target Unreachable, identifier 'dataRowDuesKombi' resolved to null
javax.el.PropertyNotFoundException: /auslegerStativEdit.xhtml @160,66 value="#{dataRowDuesKombi.auslegertyp}": Target Unreachable, identifier 'dataRowDuesKombi' resolved to null
at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100)
at org.primefaces.renderkit.InputRenderer.getConverter(InputRenderer.java:162)
at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:175)
at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1030)
at javax.faces.component.UIInput.validate(UIInput.java:960)
at javax.faces.component.UIInput.executeValidate(UIInput.java:1233)
at javax.faces.component.UIInput.processValidators(UIInput.java:698)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIData.iterate(UIData.java:1999)
at javax.faces.component.UIData.processValidators(UIData.java:1204)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at org.primefaces.component.tabview.TabView.processValidators(TabView.java:322)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.tabview.TabView.visitTree(TabView.java:391)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at javax.faces.component.UIForm.visitTree(UIForm.java:362)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170)
at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at at.beko.rainstar2.ui.filter.CustomCharacterEncodingFilter.doFilter(CustomCharacterEncodingFilter.java:25)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter.doFilter(AbstractPreAuthenticatedProcessingFilter.java:88)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
11.05.2012 08:29:38 com.sun.faces.context.flash.ELFlash setCookie
WARNUNG: JSF1095: The response was already committed by the time we tried to set the outgoing cookie for the flash. Any values stored to the flash will not be available on the next request.
**
以下是代码示例
XHTML
<h:form id="form" prependId="false">
<p:tabView id="tabView"
activeIndex="#{auslegerStativEditBean.activeTabIndex}">
<p:ajax event="tabChange"
listener="#{auslegerStativEditBean.onTabChange}" immediate="true" />
<p:tab title="#{msg.menu_auslegerstativ_duesen}" id="one">
<p:outputPanel>
<p:dataTable var="dataRowDues"
selection="#{auslegerStativEditBean.auslduesSelection}"
first="#{auslegerStativEditBean.firstRowIndexDues}"
value="#{auslegerStativEditBean.auslduesList}" editable="true"
id="dues" paginator="true"
rows="#{auslegerStativEditBean.rowsPerPageDues}"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowsPerPageTemplate="15,25,35"
rowKey="#{dataRowDues.auslegertyp}" selectionMode="single"
widgetVar="dues">
<p:column
headerText="#{msg.table_auslegerstativ_dues_auslegertyp}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.auslegertyp}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDues.auslegertyp}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_auslegerbreite}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.auslegerbreite}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDues.auslegerbreite}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_streifenbreite}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.streifenbreite}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDues.streifenbreite}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_auslegergewicht}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.auslegergewicht}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDues.auslegergewicht}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msg.table_auslegerstativ_dues_mindruck}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.mindruck}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true" value="#{dataRowDues.mindruck}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_niederschlagsindex}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.niederschlagsindex}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDues.niederschlagsindex}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msg.table_auslegerstativ_dues_druck1}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.druck1}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true" value="#{dataRowDues.druck1}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msg.table_auslegerstativ_dues_druck2}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.druck2}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true" value="#{dataRowDues.druck2}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msg.table_auslegerstativ_dues_druck3}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDues.druck3}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true" value="#{dataRowDues.druck3}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msg.column_head_edit}">
<p:rowEditor />
<p:commandButton icon="ui-icon-close"
styleClass="rainstar-button-small-edit"
action="#{auslegerStativEditBean.btn_deleteEntryClick0()}"
update=":form">
<f:setPropertyActionListener
target="#{auslegerStativEditBean.selectedAusldues}"
value="#{dataRowDues}" />
</p:commandButton>
</p:column>
<p:ajax event="rowEdit"
listener="#{auslegerStativEditBean.btn_editEntryClick0}"
update=":form" />
<p:ajax event="rowSelect"
listener="#{auslegerStativEditBean.selectionChangeAusldues}"
update=":form" />
<p:ajax event="rowUnselect"
listener="#{auslegerStativEditBean.deselectionChangeAusldues()}"
update=":form" />
</p:dataTable>
<p:dataTable var="dataRowDuesKombi"
binding="#{auslegerStativEditBean.auslduesKombiTable}"
value="#{auslegerStativEditBean.auslduesKombiList}"
editable="true" id="duesK" paginator="true" rows="15"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowsPerPageTemplate="15,25,35">
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_auslegertyp}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.auslegertyp}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.auslegertyp}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_duesenkomb}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.duesenkomb}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.duesenkomb}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_vollkreis_Anz}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.vollkreis_Anz}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.vollkreis_Anz}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_vollkreis_Groesse}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.vollkreis_Groesse}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.vollkreis_Groesse}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_halbkreis_Anz}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.halbkreis_Anz}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.halbkreis_Anz}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_halbkreis_Groesse}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.halbkreis_Groesse}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.halbkreis_Groesse}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_ges_Alpha}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.ges_Alpha}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.ges_Alpha}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_equival_dm}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.equival_dm}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.equival_dm}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column
headerText="#{msg.table_auslegerstativ_dues_kombi_intensitaets_Index}">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{dataRowDuesKombi.intensitaets_Index}" />
</f:facet>
<f:facet name="input">
<p:inputText required="true"
value="#{dataRowDuesKombi.intensitaets_Index}" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="#{msg.column_head_edit}">
<p:rowEditor />
<p:commandButton icon="ui-icon-close"
styleClass="rainstar-button-small-edit"
action="#{auslegerStativEditBean.btn_deleteEntryClick1()}"
update=":form">
<f:setPropertyActionListener
target="#{auslegerStativEditBean.selectedAuslduesKombi}"
value="#{dataRowDuesKombi}" />
</p:commandButton>
</p:column>
<p:ajax event="rowEdit"
listener="#{auslegerStativEditBean.btn_editEntryClick1}"
update=":form" />
</p:dataTable>
</p:outputPanel>
</p:tab>
.
// THE SAME FOR THE NEXT TWO TABS
.
.
.
</p:tabView>
<div class="button-footer">
<p:commandButton value="#{msg.button_new_entry}" icon="ui-icon-plus"
styleClass="button-header"
action="#{auslegerStativEditBean.btn_addNewEntryClick()}"
update=":form" />
</div>
</h:form>
豆
@Named("auslegerStativEditBean")
@SessionScoped public class AuslegerStativEditController {
@Inject
private AuslduesService auslduesService;
@Getter
@Setter
private List<Ausldues> auslduesList;
@Getter
@Setter
private List<AuslduesKombi> auslduesKombiList;
@Getter
@Setter
private Ausldues selectedAusldues;
@Getter
@Setter
private AuslduesKombi selectedAuslduesKombi;
public AuslegerStativEditController() {
selectedAusldues = new Ausldues();
selectedAuslduesKombi = new AuslduesKombi();
}
public final void onTabChange(final TabChangeEvent event) {
TabView tv = (TabView) event.getComponent();
activeTabIndex = tv.getActiveIndex();
}
@PostConstruct
public void init() {
auslduesList = auslduesService.findAll();
ausleg2List = ausleg2Service.findAll();
auslregnList = auslregnService.findAll();
duesend2List = duesend2Service.findAll();
}
public void selectionChange(SelectEvent event) {
switch (activeTabIndex) {
case 0: {
Ausldues a = (Ausldues) event.getObject();
auslduesKombiList = auslduesKombiService.findByAusldues(a);
break;
}
case 1: {
Ausleg2 a = (Ausleg2) event.getObject();
ausleg2KombiList = ausleg2KombiService.findByAusleg2(a);
break;
}
case 2: {
Auslregn a = (Auslregn) event.getObject();
auslregnKombiList = auslregnKombiService.findByAuslregn(a);
break;
}
}
}
public void deselectionChange(UnselectEvent event) {
switch (activeTabIndex) {
case 0: {
auslduesKombiList = null;
break;
}
case 1: {
ausleg2KombiList = null;
break;
}
case 2: {
auslregnKombiList = null;
break;
}
}
}
}
当然，我遗漏了一些不相关的代码部分。