javax.faces.FacesException：当启用选择或者定义rowKey属性时，DataModel必须实现org.primefaces.model.SelectableDataModel

Question

我在这里看到了这个问题很多次，但它对我没有帮助。

我有第一个ID为的数据表：servers，我可以做一个右键点击并出现一个contextMenu。我可以点击Show Process，然后我得到第二个dataTable，ID为：processes。 但现在的问题是，而不是显示新的DataTable我得到的，

javax.faces.FacesException：当选择启用或 您需要定义rowKey DataModel中必须实现 org.primefaces.model.SelectableDataModel属性

但我不得不在这两个dataTable

定义rowKey我有这样的代码：

<h:form id="form" onkeypress="return event.keyCode != 13"> 
    <!-- <p:messages id="msgs" /> --> 
    <p:growl id="msgs" showDetail="true" sticky="true" autoUpdate="true" /> 
    <!-- Context menu for servers table. --> 
    <p:contextMenu for="servers"> 
     <p:menuitem value="Show processes" update="form" icon="ui-icon-search" actionListener="#{homeBean.findLSRunningProcesses}" styleClass="homeIE"/> 
    </p:contextMenu> 
    <!-- Context menu for processes table. --> 
    <p:contextMenu for="processes"> 
     <p:menuitem styleClass="homeIE" update="@form" value="Stop Process" icon="ui-icon-stop"  oncomplete="stopDialog.show()"/> 
    </p:contextMenu> 

    <!-- Servers table. --> 
    <p:dataTable id="servers" var="server" value="#{homeBean.serverList}" paginator="true" rows="10" 
        paginatorTemplate="{FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}" 
        rowsPerPageTemplate="5,10,15" widgetVar="serversTable" rowKey="#{server.adminFQDN}" 
        selection="#{homeBean.selectedLogicalServer}" selectionMode="single" emptyMessage="No servers found with given criteria"> 

     <f:facet name="header"> 
      <h:outputText value="Servers" /> 
     </f:facet> 
     <p:column filterBy="#{server.ASSETID}" filterMatchMode="contains" sortBy="#{server.ASSETID}" headerText="ASSETID"> 
      <h:outputText value="#{server.ASSETID}" /> 
     </p:column> 
     <p:column filterBy="#{server.adminFQDN}" filterStyle="width:240px;" filterMatchMode="contains" sortBy="#{server.adminFQDN}" headerText="FQDN"> 
      <h:outputText value="#{server.adminFQDN}" /> 
     </p:column> 
     <p:column filterBy="#{server.adminIP}" filterMatchMode="contains" sortBy="#{server.adminIP}" headerText="Admin IP"> 
      <h:outputText value="#{server.adminIP}" /> 
     </p:column> 
     <p:column filterBy="#{server.delivery}" filterMatchMode="exact" sortBy="#{server.delivery}" headerText="Delivery"> 
      <f:facet name="filter"> 
       <p:selectOneMenu onchange="PF('serversTable').filter()"> 
        <f:selectItem itemLabel="Select One" itemValue="#{null}" noSelectionOption="false" /> 
        <f:selectItems label="#{homeBean.deliveries}" value="#{homeBean.deliveries}" /> 
       </p:selectOneMenu> 
      </f:facet> 
      <h:outputText value="#{server.delivery}" /> 
     </p:column> 
     <p:column filterBy="#{server.environment}" filterMatchMode="exact" sortBy="#{server.environment}" headerText="Environment"> 
      <f:facet name="filter"> 
       <p:selectOneMenu onchange="PF('serversTable').filter()"> 
        <f:selectItem itemLabel="Select One" noSelectionOption="true" itemValue="#{null}"/> 
        <f:selectItems value="#{homeBean.environments}" /> 
       </p:selectOneMenu> 
      </f:facet> 
      <h:outputText value="#{server.environment}" /> 
     </p:column> 
     <p:column filterBy="#{server.function}" filterMatchMode="exact" sortBy="#{server.function}" headerText="Function"> 
      <f:facet name="filter"> 
       <p:selectOneMenu onchange="PF('serversTable').filter()"> 
        <f:selectItem itemLabel="Select One" itemValue="#{null}" noSelectionOption="true" /> 
        <f:selectItems value="#{homeBean.functions}" /> 
       </p:selectOneMenu> 
      </f:facet> 
      <h:outputText value="#{server.function}" /> 
     </p:column> 
     <p:column filterBy="#{server.osVersion}" filterMatchMode="contains" sortBy="#{server.osVersion}" headerText="OS VERSION"> 
      <h:outputText value="#{server.osVersion}" /> 
     </p:column> 
     <p:column filterBy="#{server.os}" filterMatchMode="contains" sortBy="#{server.os}" headerText="OS"> 
      <h:outputText value="#{server.os}" /> 
     </p:column> 


    </p:dataTable> 

    <!-- Panel containing processes tables. --> 
    <p:panelGrid id="serverProcesses" styleClass="group-user-selection-table" rendered="#{homeBean.showSelectionPanel}"> 
     <f:facet name="header"> 
      <p:row> 
       <p:column> 
        <h:outputText value="#{homeBean.selectedLogicalServer.adminFQDN}" /> 
       </p:column> 
      </p:row> 
     </f:facet> 

     <p:row> 

      <!--Processes table. --> 
      <p:column> 
       <p:dataTable id="processes" var="process" value="#{homeBean.processesList}" filteredValue="#{homeBean.filteredProcesses}" 
          selection="#{homeBean.selectedProcesses}" paginator="true" rows="15" rowKey="#{process.owner}" 
          paginatorTemplate="{FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}" 
          rowsPerPageTemplate="15,20,25,30" selectionMode="single" emptyMessage="No processses found with given criteria"> 
        <f:facet name="header"> 
         <h:outputText value="Processes" /> 
        </f:facet> 
        <p:column name="owner" filterBy="#{process.owner}" filterMatchMode="contains" sortBy="#{process.owner}" headerText="#{homeBean.selectedLogicalServer.os eq 'Windows' ? 'DESCRIPTION' : 'OWNER'}"> 
         <h:outputText value="#{process.owner}" /> 
        </p:column> 
        <p:column name="pid" filterBy="#{process.pid}" filterMatchMode="exact" sortBy="#{process.owner}" headerText="PID"> 
         <h:outputText value="#{process.pid}" /> 
        </p:column> 
        <p:column name="ppid" filterBy="#{process.ppid}" filterMatchMode="exact" sortBy="#{process.ppid}" headerText="#{homeBean.selectedLogicalServer.os eq 'Windows' ? 'TYPE' : 'PPID'}"> 
         <h:outputText value="#{process.ppid}" /> 
        </p:column> 
        <p:column name="c" filterBy="#{process.c}" filterMatchMode="exact" sortBy="#{process.c}" headerText="#{homeBean.selectedLogicalServer.os eq 'Windows' ? 'STATE' : 'C'}"> 
         <h:outputText value="#{process.c}" /> 
        </p:column> 
        <p:column name="stime" filterBy="#{process.stime}" filterMatchMode="contains" sortBy="#{process.stime}" headerText="STIME" rendered="#{!(homeBean.selectedLogicalServer.os eq 'Windows')}"> 
         <h:outputText value="#{process.stime}" /> 
        </p:column> 
        <p:column name="tty" filterBy="#{process.tty}" filterMatchMode="contains" sortBy="#{process.tty}" headerText="TTY" rendered="#{!(homeBean.selectedLogicalServer.os eq 'Windows')}"> 
         <h:outputText value="#{process.tty}" /> 
        </p:column> 
        <p:column name="time" filterBy="#{process.time}" filterMatchMode="contains" sortBy="#{process.time}" headerText="TIME" rendered="#{!(homeBean.selectedLogicalServer.os eq 'Windows')}"> 
         <h:outputText value="#{process.time}" /> 
        </p:column> 
        <p:column name="cmd" filterBy="#{process.cmd}" filterMatchMode="contains" sortBy="#{process.cmd}" headerText="#{homeBean.selectedLogicalServer.os eq 'Windows' ? 'NAME' : 'CMD'}"> 
         <h:outputText value="#{process.cmd}" /> 
        </p:column> 
       </p:dataTable> 
      </p:column> 
     </p:row> 
    </p:panelGrid> 
    <p:dialog header="Stop Process" widgetVar="stopDialog" minHeight="40" styleClass="dialogPosition"> 
     <h:outputText value="You are going to stop the process "/> 
     <h:outputText value="#{homeBean.selectedProcesses.cmd}"/> 
     <h:outputText value="with PID"/> 
     <h:outputText value="#{homeBean.selectedProcesses.pid}"/> 
     <br /><br /><br /><br /> 
     <p:commandButton value="Yes" type="button" styleClass="ui-confirmdialog-yes" icon="ui-icon-check" style="float:left" onclick="stopDialog2.show();stopDialog.hide();" actionListener="#{homeBean.attrListener}"> 
      <f:attribute name="processPID" value="#{process.pid}" /> 
     </p:commandButton> 
     <p:commandButton value="NO" onclick="stopDialog.hide()" type="button" styleClass="ui-confirmdialog-no" icon="ui-icon-close" style="float:right"/> 
    </p:dialog> 
    <p:dialog header="Stop Process" widgetVar="stopDialog2" minHeight="40" styleClass="dialogPosition"> 
     <h:outputText value="You are going to send an email to:"/> 
     <br /> 
     <h:outputText value="#{homeBean.email}"/> 
     <br /><br /><br /> 
     <p:commandLink value="Yes" styleClass="ui-confirmdialog-yes" icon="ui-icon-check" style="float:left" update="form" action="#{homeBean.stopProcess}" oncomplete="stopDialog2.hide();"/> 
     <p:commandButton value="NO" onclick="stopDialog2.hide()" type="button" styleClass="ui-confirmdialog-no" icon="ui-icon-close" style="float:right"/> 
    </p:dialog> 
</h:form> 

Answer 1

FacesException: DataModel must implement org.primefaces.model.SelectableDataModel when selection is enabled 此解决方案适用于我。

尤其是这个答案https://stackoverflow.com/a/10527008/5250930 表必须实现SelectableDataModel