将图像加载到ImageView JavaFX [英] Load image to ImageView JavaFX

问题描述

我想在对话框窗口中显示图像（保存在项目文件夹中），但是当我运行我的方法showDialogWithImage时，我得到FileNotFoundExcpetion：imgs\pic1.jpg（系统找不到指定的文件），虽然图像是位于那里。

I would like to display image(saved in project folder) in dialog window, but when I run my method showDialogWithImage I get FileNotFoundExcpetion: imgs\pic1.jpg (The system cannot find the file specified), although the image is located there.

我也试过这样加载图像：

图像image = new Image（getClass（）。getResourceAsStream（path）） ;但是也遇到了同样的问题。

I have tried load image on this way too:
Image image = new Image(getClass().getResourceAsStream(path));, but got the same problem.

是否有其他可能性将图像加载到ImageView？

感谢您的帮助！

Are there some others possibilities to load image to ImageView ?
Thank you for help!

• 我的Java代码位于项目文件夹中的src \ myProject \ gui。

• My Java code is located in src\myProject\gui in project folder.

path =imgs\pic1.jpg// imgs位于项目文件夹中

path="imgs\pic1.jpg" // imgs is located in project folder

public void showDialogWithImage(String path) {
        final Stage dialogStage = new Stage();

        logger.info(path);

        InputStream is = null;
        try {
            is = new FileInputStream(path); // here I get FileNotFoundException
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        Image image = new Image(is);
        ImageView view = new ImageView();
        view.setImage(image);

        Button btnOK = new Button("OK");
        btnOK.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                dialogStage.close();
            }
        });

        dialogStage.initModality(Modality.WINDOW_MODAL);
        dialogStage.setScene(new Scene(VBoxBuilder.create()
                .children(view, btnOK).alignment(Pos.CENTER)
                .padding(new Insets(35)).build()));
        dialogStage.show();

    }

推荐答案

getClass（）。getResourceAsStream（path）将从调用类的位置开始搜索文件。因此，通过使用此路径imgs\pic1.jpg，您说这是您的文件结构

getClass().getResourceAsStream(path) will start its file search from the location of the calling class. So by using this path "imgs\pic1.jpg", you're saying this is your file structure

src\myProject\gui\imgs\pic1.jpg

要使搜索遍历，您需要在 imgs 之前添加额外的分隔符。所以

To have the search traverse back, you need the extra separator before imgs. So

"\imgs\pic1.jpg"

另外，我认为当你使用反斜杠作为分隔符时，你需要逃避它。所以

Also, I think when you use a back slash as separator, you need to escape it. So

"\\imgs\\pic1.jpg

或者只是使用正斜杠

"/imgs/pic1.jpg

另一种选择是使用类加载器，它将从根目录进行搜索不需要开始分隔符

Another option is to use a class loader, that will search from the root, where you don't need the beginning separator

getClass().getClassLoader().getResourceAsStream("imgs/pic1.png");

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