如何<p:menubar>
在 Primefaces中定义背景
<p:menubar rendered="#{loginBO.flag=='admin'}" autoSubmenuDisplay="True" style="background-image: url('images/ui-bg_gloss-wave_55_5c9ccc_500x100_png.png')">
<p:menuitem value="Home" url="/RMGHome.xhtml" icon="ui-icon-home" />
<p:menuitem value="Filter Search" action="#{leftMenuService.getMenuList}" icon="ui-icon-search" />
</p:submenu>