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=“#{}”,我添加了all,但仍然不起作用 XHTMLJsf 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=“#{}”,我添加了all,但仍然不起作用 XHTML <
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Equipamentos</title>
</h:head>
<h:body>
<p:dataTable id="equipamentos"
var="equipamento"
value="#{equipamentoBean.equipamentos}"
widgetVar="equipamentoTable"
filteredValue="#{equipamentoBean.equipamentosFiltrados}"
paginator="true"
rows="15"
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">
<h:outputText value="#{equipamento.nome}"></h:outputText>
</p:column>
<p:column filterBy="#{equipamento.equipamentoTipoId}"
sortBy="#{equipamento.equipamentoTipoId}"
headerText="Tipo">
<h:outputText value="#{equipamento.equipamentoTipoId}"></h:outputText>
</p:column>
<p:column filterBy="#{equipamento.equipamentoTipoId.hardwareEquipamentoId}"
headerText="Hardware">
<h:outputText
value="#{equipamento.equipamentoTipoId.hardwareEquipamentoId}">
</h:outputText>
</p:column>
<p:column filterBy="#{equipamento.equipamentoVersaoSoftwareId}"
headerText="Versao Software">
<h:outputText
value="#{equipamento.equipamentoVersaoSoftwareId}">
</h:outputText>
</p:column>
<p:column filterBy="#{equipamento.equipamentoTipoId.tecnologiaEquipamentoId}"
headerText="Tecnologia">
<h:outputText
value="#{equipamento.equipamentoTipoId.tecnologiaEquipamentoId}"
</h:outputText>
</p:column>
<p:column filterBy="#{equipamento.regiaoId}" headerText="Regional">
<h:outputText value="#{equipamento.regiaoId}"></h:outputText>
</p:column>
<p:column filterBy="#{equipamento.equipamentoTipoId.areaId}"
headerText="Area">
<h:outputText
value="#{equipamento.equipamentoTipoId.areaId}">
</h:outputText>
</p:column>
<p:column filterBy="#{equipamento.ativo}" headerText="Ativo">
<h:outputText value="#{equipamento.ativo}"></h:outputText>
</p:column>
</p:dataTable>
</h:body>
</html>
您必须像这样将
p:datatable
放入h:form
中
<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>
id=“master”
位于我的“master”模板中,所有其他视图均源自该模板:
<h:body>
<pm:page id="master">
...
</pm:page>
</h:body>
...
您必须像这样将p:datatable
放入h:form
中
<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>
id=“master”
位于我的“master”模板中,所有其他视图均源自该模板:
<h:body>
<pm:page id="master">
...
</pm:page>
</h:body>
...
此处不解决此问题。我有一个h:form
在我的p:dataTable
周围,但我仍然得到了臭名昭著的NPE
@Roland同样的情况,你有没有找到解决方法的例子?嗯,我不知道。但它不会回来。还请检查(如果经过同行审查)我关于适当范围(ViewScoped
)和id=“form list something”
的更新答案,因为强烈建议在添加新记录时更新表。此处不解决此问题。我有一个h:form
在我的p:dataTable
周围,但我仍然得到了臭名昭著的NPE
@Roland同样的情况,你有没有找到解决方法的例子?嗯,我不知道。但它不会回来。还请检查(如果经过同行审查)我关于适当范围(ViewScoped
)和id=“form list something”
的更新答案,因为强烈建议在添加新记录时更新表。
<h:body>
<pm:page id="master">
...
</pm:page>
</h:body>