rich:columns 动态生产列

<rich:dataTable value="#{dataTableScrollerBean.model}" var="model" width="750">

            <rich:columns value="#{dataTableScrollerBean.columns}" var="columns"

                index="ind" id="column#{ind}"> 

                <f:facet name="header">

                    <h:outputText value="#{columns.header}" />

                </f:facet>

            

                <h:outputText value="#{model[ind].model} " />

                <h:outputText value="#{model[ind].mileage} miles " />

                <h:outputText value="#{model[ind].price}$" />       

            </rich:columns> 

</rich:dataTable>