<HBox spacing="20" alignment="CENTER_LEFT">
<!---关键在这里----><HBox HBox.hgrow="ALWAYS"></HBox><JFXButton prefWidth="100" fx:id="dialogCommitButton" prefHeight="40" textAlignment="RIGHT" lineSpacing="80" minHeight="40" buttonType="RAISED" text="完成"style="-fx-text-fill:WHITE;-fx-background-color:#5264AE;-fx-font-size:14px;-fx-float:right;"/><JFXButton prefWidth="100" fx:id="dialogCancelButton" prefHeight="40" textAlignment="RIGHT" lineSpacing="80" minHeight="40" buttonType="RAISED" text="取消"style="-fx-text-fill:WHITE;-fx-background-color:#5264AE;-fx-font-size:14px;-fx-float:right;"/>
</HBox>