ImageIO例外

时间:2012-04-15 17:44:16

标签: java javax.imageio

我收到以下错误:

javax.imageio.IIOException: Can't read input file!
Resource not found: C:\icon.gif
at javax.imageio.ImageIO.read(ImageIO.java:1301)
at connector.SystemTrayCreator.createImage(SystemTrayCreator.java:98)
at connector.SystemTrayCreator.create(SystemTrayCreator.java:36)
at connector.Start.main(Start.java:14)
Exception in thread "main" java.lang.IllegalArgumentException: creating TrayIcon with     null Image
at java.awt.TrayIcon.<init>(TrayIcon.java:168)
at connector.SystemTrayCreator.create(SystemTrayCreator.java:36)
at connector.Start.main(Start.java:14)
Java Result: 1

以下代码:

final TrayIcon trayIcon = 
            new TrayIcon(createImage("C:\\icon.gif", "Tray icon"));

protected static Image createImage(String path, String description) {
    Image image = null;

    try {
        File f = new File(path);
        image = ImageIO.read(f);
    } catch (Exception e) {
        e.printStackTrace();
    }

    if (image == null) {
        Debugger.showMessage("Resource not found: " + path);
        return null;
    } else {
        return (new ImageIcon(image, description)).getImage();
    }
}

我很确定路径是正确的。此外,名称匹配。

任何人都知道什么是错的?

1 个答案:

答案 0 :(得分:2)

您的代码似乎很好。我理论上可能出现两个问题:

  1. 文件权限问题。可能将文件放在除驱动器根目录之外的其他位置,并明确检查其权限。您可以直接从代码中调用canRead() - 这就是ImageIO.read所做的事情。它必须返回true

  2. path参数末尾可能有一些空格。使用trim()消除这种可能性。