在Windows中使用“打开方式”时，如何将文件路径传递给命令行争论？

Question

I'm new here so I'm not sure I'm doing anything wrong so please do tell me if I am.

I'm making a simple image/gif viewer in Java. I want to be able to use the extracted application (which I will wrap in an .exe with launch4j) to open image files. When choosing the image to open with it, I want it to get the file path of the image and pass it to args[0] so that the application can use it.

I'm sensing this is something that needs to be done outside of my Java code. Maybe in an installer or the wrapper I'm using but I have no idea how to do it.

I've been searching the past 3 hours to no avail. Any help is appreciated. My code so far:

public class MainWindow {

private JFrame frame1;
public static String imageLocation = null;

public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Throwable e) {
            e.printStackTrace();
        }

        try {
            imageLocation = args[0];
        } catch (Exception e1) {
            e1.printStackTrace();
            System.exit(0);
        }

        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    MainWindow window = new MainWindow();
                    window.frame1.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public MainWindow() {
        initialize();
    }

    private void initialize() {

        BufferedImage img = null;
        try{
            img = ImageIO.read(new File(imageLocation));
        }catch (IOException e) {
            e.printStackTrace();
        }
        int imgWidth = img.getWidth();
        int imgHeight = img.getHeight();

        frame1 = new JFrame();
        frame1.getContentPane().setBackground(Color.WHITE);
        frame1.setResizable(false);
        frame1.setTitle(imageLocation);
        frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame1.getContentPane().setLayout(new BorderLayout(0, 0));
        frame1.setBounds(200, 200, imgWidth+18, imgHeight+40);

        JLabel imgLabel = new JLabel("");
        imgLabel.setToolTipText(imageLocation);
        imgLabel.setHorizontalAlignment(SwingConstants.CENTER);
        imgLabel.setIcon(new ImageIcon(imageLocation));
        imgLabel.setBounds(0, 0, frame1.getWidth(), frame1.getWidth());
        frame1.getContentPane().add(imgLabel);
    }
}

Thanks in advance.

Answer 1

I don't see any form elements to upload files. Not an expert in JForms but I believe you need a file upload control that will pass its value to the args array in your code.