如何设置imageview的大小 javafx

package controls;import javafx.application.Application;import javafx.event.EventHandler;import javafx.scene.Scene;import javafx.scene.control.Label;import javafx.scene.image.Image;import javafx.scene.image.ImageView;import javafx.scene.input.MouseEvent;import javafx.scene.layout.HBox;import javafx.scene.paint.Color;import javafx.scene.text.Font;import javafx.stage.Stage;public class LabelExample extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage primaryStage) { primaryStage.setTitle("Label Example"); Image image = new Image(getClass().getResourceAsStream("search-label.jpg")); Label label1 = new Label("Search"); label1.setGraphic(new ImageView(image)); label1.setTextFill(Color.web("#0076a3")); label1.setFont(new Font("Arial", 30)); Label label2 = new Label("Values"); label2.setFont(new Font("Cambria", 32)); label2.setRotate(270); label2.setTranslateY(50); final Label label3 = new Label("A label that needsto be wrapped"); label3.setWrapText(true); label3.setOnMouseEntered(new EventHandler<MouseEvent>(){ @Override public void handle(MouseEvent e){ label3.setScaleX(1.5); label3.setScaleY(1.5); } }); label3.setOnMouseExited(new EventHandler<MouseEvent>(){ @Override public void handle(MouseEvent e){ label3.setScaleX(1); label3.setScaleY(1); } }); HBox root = new HBox(); root.getChildren().add(label1); root.getChildren().add(label2); root.getChildren().add(label3); primaryStage.setScene(new Scene(root, 300, 250)); primaryStage.show(); }}