JavaFx的问题:图像没有显示

Question

我在代码中插入了一个图像对象。程序编译并运行，但图像不显示。

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这是我的密码

package JavaFX;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

import java.io.File;

public class ShowImage extends Application {
    public void start(Stage primaryStage){
        Pane pane = new HBox(10);
        pane.setPadding(new Insets(5,5,5,5));
        Image image = new Image(new File("image/v2-7c37a26d9dd77abf6de2ca9ca3fc7ae0_720w.jpg").toURI().toString());//remember this must be an url address,
        // file should be converted to url

        pane.getChildren().add(new ImageView(image));

        ImageView imageView2 = new ImageView(image);
        imageView2.setFitHeight(100);
        imageView2.setFitWidth(100);
        pane.getChildren().add(imageView2);

        ImageView imageView3 = new ImageView(image);
        imageView3.setRotate(90);
        pane.getChildren().add(imageView3);

        Scene scene = new Scene(pane);
        primaryStage.setTitle("ShowImage");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

编译器不会显示任何错误或警告。

Answer 1

您的代码一般都能工作，所以这个问题很可能是图像的问题。

你应该检查errorProperty和exceptionProperty，例如.

if (image.errorProperty().getValue()) {
    image.exceptionProperty().getValue().printStackTrace();
}

可运行的例子。

import java.io.File;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class App extends Application {

    @Override
    public void start(Stage stage) {
        Pane pane = new HBox(10);
        pane.setPadding(new Insets(5, 5, 5, 5));

        Image image = new Image(new File("image/v2-7c37a26d9dd77abf6de2ca9ca3fc7ae0_720w.jpg").toURI().toString());//remember this must be an url address,
        if (image.errorProperty().getValue()) {
            image.exceptionProperty().getValue().printStackTrace();
        }

        pane.getChildren().add(new ImageView(image));

        ImageView imageView2 = new ImageView(image);
        imageView2.setFitHeight(100);
        imageView2.setFitWidth(100);
        pane.getChildren().add(imageView2);

        ImageView imageView3 = new ImageView(image);
        imageView3.setRotate(90);
        pane.getChildren().add(imageView3);

        Scene scene = new Scene(pane);
        stage.setScene(scene);
        stage.sizeToScene();
        stage.show();
    }

    public static void main(String[] args) {
        launch();
    }
}