你可以在Test.java里写如下代码试一下:
BufferedImage image = null;
InputStream inputStream = Test.class.getResourceAsStream("/五子棋白色.jpg");
image = ImageIO.read(inputStream);
BufferedImage image = null;
File wuziqi = new File(System.getProperty("user.dir")+"\\src\\wuziqi\\五子棋白色.jpg");
image = ImageIO.read(wuziqi);