将Primefaces DataTable与org.primefaces.component.datatable.DataTable绑定；

我对primefaces数据表组件有疑问.我想将DataTable变量绑定到p:dataTable，这样我就可以通过编程从后备bean中操作第一个，行，rowsPerPageTemplate等.但是我被困住了，并不断获取java.lang.String无法转换为javax.faces.component.UIComponent.

I have a question regarding primefaces datatable component. I want to bind a DataTable variable to the p:dataTable so that I would be able to manipulate the first, rows, rowsPerPageTemplate, etc. programmatically from the backing bean. But I'm stuck and keep getting java.lang.String cannot be cast to javax.faces.component.UIComponent.

这是我的p:dataTable声明.

Here's my p:dataTable declaration.

<p:dataTable id="dtProductCategoryList" value="#{saProductCategoryController.saproductcategories}" rowsPerPageTemplate="#{appConfig.rowsPerPageTemplate}" 
                             paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}" 
                             currentPageReportTemplate="{currentPage} #{bundle.DataTablePageSeparator} {totalPages}"
                             paginatorAlwaysVisible="false" var="item" paginator="true" rows="#{appConfig.rowsPerPageDefault}"
                             binding="saProductCategoryController.dtProductCategory">

这是我的ViewScoped支持bean.

And here's my ViewScoped backing bean.

    private DataTable dtProductCategory;

/** Creates a new instance of saProductCategoryController */
public SaProductCategoryController() {
}

@PostConstruct
public void Init() {
    try {
        dtProductCategory = new DataTable();
        //dtProductCategory.
        saproductcategories = saProductCategoryFacade.selectAll();            
        LogController.log.info("Creating postconstruct for saProductCategoryController");
    } catch (Exception ex) {
        LogController.log.fatal(ex.toString());
    }
}

可能是什么问题?看来DataTable变量被误认为是字符串?

What could be the problem? It seems that the DataTable variable is mistaken for a String?

感谢您的所有帮助.谢谢.

Appreciate all your help. Thanks.