java - Get an image and its position from excel file using Apache POI

Question

Is it possible to extract an image's information from an xls spreadsheet using Apache POI?

In one of my projects, I need to read some images from a .xls file. I can read all images together, but how can I get images position (like columns and rows number or coordinates)? Otherwise I can get images position but I can't know information, like picture name or extension or others, about a specific image at the positions found. How I can get images and positions too?

Here read all images... and here get images positions...

Answer 1

Have a look here:

http://poi.apache.org/components/spreadsheet/quick-guide.html#Images

Sample:

List lst = workbook.getAllPictures();

for (Iterator it = lst.iterator(); it.hasNext(); ) {

    PictureData pict = (PictureData)it.next();

    String ext = pict.suggestFileExtension();

    byte[] data = pict.getData();

    if (ext.equals("jpeg")) {

      FileOutputStream out = new FileOutputStream("pict.jpg");

      out.write(data);

      out.close();

    }
}

After this, you can use tools like ImageInfo which extends Magick to find out various configs. Yo can even convert images to different sizes.

Take a look at this class as well:

http://blog.jaimon.co.uk/simpleimageinfo/SimpleImageInfo.java.html

-- Hope this helps