Jsf 2 选择dataTable后出错

当我在dataTable中进行选择时，它给出了下面的错误

[javax.faces.FacesException: DataModel must implement org.primefaces.model.SelectableDataModel when selection is enabled or you need to define rowKey attribute]]

但在我的dataTable中，rowKey属性已经定义好了，我检查了它的值是否唯一。我出现这个错误的可能原因是什么

数据表代码如下所示

<p:dataTable id="scenarioDataTableId" var="scenarioDataTable" value="#{myBean.scenarioApplicationColumnBOList}" tableStyle="width:90%" rowKey="scenarioDataTable.scenarioApplicationColumnId" selection="#{myBean.selectedScenarioApplicationColumnRow}" >
    <f:facet name="header">Database Columns That will be updated in this Scenario</f:facet>

    <p:ajax event="rowSelectRadio" listener="#{myBean.editSelectedScenarioApplicationColumnAction}"></p:ajax>
    <p:column selectionMode="single" style="width:10%" /> 

    <p:column id="Id" headerText="Id" >
                            #{scenarioDataTable.scenarioApplicationColumnId}
    </p:column>

    <p:column id="scenarioId" headerText="Scenario Id" >
                            #{scenarioDataTable.scenarioId}
    </p:column>

    <p:column id="appId" headerText="Application Column Id" >
                            #{scenarioDataTable.applicationColumnId}
    </p:column>

    <p:column id="tableNameId" headerText="Table Name" >
                            #{scenarioDataTable.tableName}
    </p:column>

    <p:column id="columnNameId" headerText="Column Name" >
                            #{scenarioDataTable.columnName}
    </p:column>

    <p:column id="columnValidValueId" headerText="Column Valid Value" >
                            #{scenarioDataTable.columnValidValue}
    </p:column>

    <p:column id="dbActionId" headerText="DB Action" >
                            #{scenarioDataTable.dbAction}
    </p:column>

    <f:facet name="footer">
        <p:commandButton value="Add New Row" action="#{myBean.openDialogScenarioUpdateColumn}" oncomplete="dialogScenarioUpdateColumn.show()" rendered="#{myBean.scenarioInputFieldRendered}"></p:commandButton>    
        <p:spacer width="20" ></p:spacer>
        <p:commandButton id="editButton" value="Edit" action="#{myBean.editSelectedScenarioApplicationColumnAction}" update=":formSelectCriteria:ScenarioMainPanel" ></p:commandButton>
        <p:spacer width="20" ></p:spacer>
        <p:commandButton id="deleteButton" value="Delete"></p:commandButton>
    </f:facet>

</p:dataTable>

在此场景中将更新的数据库列
#{scenarioDataTable.scenarioApplicationColumnId}
#{scenarioDataTable.scenarioId}
#{scenarioDataTable.applicationColumnId}
#{scenarioDataTable.tableName}
#{scenarioDataTable.columnName}
#{scenarioDataTable.columnValidValue}
#{scenarioDataTable.dbAction}

看一看。

rowKey

必须引用

p:dataTable

中显示的属性（这是

{myBean.scenarioApplicationColumnBOList}

对象之一的属性），例如

但不是

rowKey="scenarioDataTable.scenarioApplicationColumnId"

---

哦……愚蠢的错误。你知道我一整天都在发疯。无论如何，谢谢你指出错误

rowKey="scenarioDataTable.scenarioApplicationColumnId"