Jsf org.primefaces.component.datatable.feature.FilterFeature.filter上的java.lang.NullPointerException
我正在尝试为一个数据表创建一个筛选器。我希望这个过滤器能够处理datatable中包含的所有关键字 我在下面的例子：但我不能让它工作 问题是，当我输入任何关键字时，数据表都会显示消息Nenhum Equipmento encontrado，如果我删除关键字，所有结果都不会返回，消息Nenhum Equipmento encontrado会保留 我怎样才能解决这个问题 我查找了类似的问题，结果发现列上可能缺少filterBy={}，然后添加了all，但仍然不起作用 XHTML 您必须像这样将p:datatable放入h:form中Jsf org.primefaces.component.datatable.feature.FilterFeature.filter上的java.lang.NullPointerException,jsf,primefaces,datatable,nullpointerexception,filtering,Jsf,Primefaces,Datatable,Nullpointerexception,Filtering,我正在尝试为一个数据表创建一个筛选器。我希望这个过滤器能够处理datatable中包含的所有关键字 我在下面的例子：但我不能让它工作 问题是，当我输入任何关键字时，数据表都会显示消息Nenhum Equipmento encontrado，如果我删除关键字，所有结果都不会返回，消息Nenhum Equipmento encontrado会保留 我怎样才能解决这个问题 我查找了类似的问题，结果发现列上可能缺少filterBy={}，然后添加了all，但仍然不起作用 XHTML 您必须像这样将p:d
<h:form id="form-list-equipamentos">
<p:dataTable id="equipamentos"
var="equipamento"
value="#{equipamentoBean.equipamentos}"
widgetVar="equipamentoTable"
filteredValue="#{equipamentoBean.equipamentosFiltrados}"
emptyMessage="Nenhum equipamento encontrado"
resizableColumns="true">
<f:facet name="header">
Lista de equipamentos
<!-- DESLIGAR COLUNAS -->
<p:commandButton id="toggler"
type="button"
value="Colunas"
style="float:right"
icon="ui-icon-calculator" />
<p:columnToggler datasource="equipamentos"
trigger="toggler" />
<!-- BUSCA -->
<p:outputPanel>
<h:outputText value="Busca em todos os campos:"/>
<p:inputText id="globalFilter"
onkeyup="PF('equipamentoTable').filter()"
style="width:250px"
placeholder="Palavra-chave para busca" />
</p:outputPanel>
</f:facet>
<p:column filterBy="#{equipamento.nome}"
sortBy="#{equipamento.nome}"
headerText="Nome" filterMatchMode="contains">
<h:outputText value="#{equipamento.nome}"></h:outputText>
</p:column>
</p:dataTable>
</h:form>
<h:body>
<pm:page id="master">
...
</pm:page>
</h:body>
在这里解决不了。我在我的p:dataTable中有一个h:form，但我仍然得到了那个臭名昭著的NPE。@罗兰，同样的情况，你找到了任何解决方法的例子吗？嗯，我不知道。但它不会回来。还请检查同行是否审阅了我关于适当范围ViewScope和id=form的更新答案，因为强烈建议在添加新记录时更新表。
set 24, 2014 7:00:54 PM com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException
SEVERE: Error Rendering View[/equipamento.xhtml]
java.lang.NullPointerException
at org.primefaces.component.datatable.feature.FilterFeature.filter(FilterFeature.java:136)
at org.primefaces.component.datatable.feature.FilterFeature.encode(FilterFeature.java:105)
at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:77)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:582)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.api.UIData.visitTree(UIData.java:692)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:322)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60)
at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
set 24, 2014 7:00:54 PM com.sun.faces.context.AjaxExceptionHandlerImpl handlePartialResponseError
SEVERE: java.lang.NullPointerException
at org.primefaces.component.datatable.feature.FilterFeature.filter(FilterFeature.java:136)
at org.primefaces.component.datatable.feature.FilterFeature.encode(FilterFeature.java:105)
at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:77)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:582)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.api.UIData.visitTree(UIData.java:692)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:322)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60)
at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
<h:form id="form-list-equipamentos">
<p:dataTable id="equipamentos"
var="equipamento"
value="#{equipamentoBean.equipamentos}"
widgetVar="equipamentoTable"
filteredValue="#{equipamentoBean.equipamentosFiltrados}"
emptyMessage="Nenhum equipamento encontrado"
resizableColumns="true">
<f:facet name="header">
Lista de equipamentos
<!-- DESLIGAR COLUNAS -->
<p:commandButton id="toggler"
type="button"
value="Colunas"
style="float:right"
icon="ui-icon-calculator" />
<p:columnToggler datasource="equipamentos"
trigger="toggler" />
<!-- BUSCA -->
<p:outputPanel>
<h:outputText value="Busca em todos os campos:"/>
<p:inputText id="globalFilter"
onkeyup="PF('equipamentoTable').filter()"
style="width:250px"
placeholder="Palavra-chave para busca" />
</p:outputPanel>
</f:facet>
<p:column filterBy="#{equipamento.nome}"
sortBy="#{equipamento.nome}"
headerText="Nome" filterMatchMode="contains">
<h:outputText value="#{equipamento.nome}"></h:outputText>
</p:column>
</p:dataTable>
</h:form>
<h:form>
....
<p:commandButton
type="submit"
value="Add something"
action="#{someBackingBean.addSomething()}"
update=":master:form-list-equipamentos:equipamentos"
/>
</h:form>
<h:body>
<pm:page id="master">
...
</pm:page>
</h:body>