javafx Scene Builder 2.0 如何给anchorpane加入一个本地背景图像

通过Css来加入:
-fx-background-image:url("file:///C:/nyayanew/config/game3/bgl1f2.jpg")
类似代码:
File f = new File("C:\\nyayanew\\config\\game3\\bgl1f2.jpg");
center.setStyle("-fx-background-image:file:///" + f.getAbsolutePath().replace("\\", "/"));