裁剪文件

ImageUtils.java

    private static final String SRC = "D:\\Screenshot_2016-12-26-13-59-44-263_支付宝.png";

    public static void main(String[] args) throws IOException {
        cutImage(SRC, "D:\\out\\src_out_" + 0 + ".png", 475, 1568, 489, 491);
    }

    /**
     * 裁剪图片
     *
     * @param sourcePath 源文件
     * @param targetPath 结果文件,如果为空结果文件会覆盖源文件
     * @param x          裁剪起始位置 x坐标
     * @param y          裁剪起始位置 y坐标
     * @param width      裁剪宽度
     * @param height     裁剪高度
     * @return
     * @throws IOException 未找到源文件
     */
    public static String cutImage(String sourcePath, String targetPath, int x, int y, int width, int height) throws IOException {
        File imageFile = new File(sourcePath);
        if (!imageFile.exists()) {
            throw new IOException("Not found the images:" + sourcePath);
        }
        if (targetPath == null || targetPath == "") {
            targetPath = sourcePath;
        }
        String format = sourcePath.substring(sourcePath.lastIndexOf(".") + 1, sourcePath.length());
        BufferedImage image = ImageIO.read(imageFile);
        image = image.getSubimage(x, y, width, height);
        ImageIO.write(image, format, new File(targetPath));
        return targetPath;
    }