我有以下问题。
有一个带有 3 个选项卡的 TabView。在每个选项卡中，我有两个数据表。如果我在第一个表中选择一行，关联的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，则关联的数据将加载到第二个表中（如上例所示）。但在我可以切换到另一个表之前，我必须明确取消选择第一个表中的选定行，以便更新 activeIndex 并且我在支持 bean 中的取消选择事件将被触发，这将清除第二个表中的关联数据。如果我不执行此取消选择，我的 tabview 中的 activeIndex 将不会更新，并且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.
**
这是一个示例代码
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。