CODEWITHSUNDEEP
javainputstreambufferedimagejavax.imageio
Moody
Moody

Reputation: 833

BufferedImage to InputStream - Format is different

I am trying to convert my BufferedImage to an Inputstream using the following:

BufferedImage bi = ImageIO.read(file.getInputStream());
bi = Scalr.resize(bi, 300);
ByteArrayOutputStream os = new ByteArrayOutputStream();
ImageIO.write(bi, file.getContentType(), os); //the content type is specified as image/jpeg

The problem I am facing is that my file.getContentType() returns the value as "image/jpeg" instead of e.g. "jpg", and thus shows a corrupt file.

Is there a good way to convert this to jpg (or make it possibly accept image/jpeg)? I have many other file formats (png for instance) and think that a switch statement which does some logic to check what the content type is would be quite unnecessary.

Upvotes: 1

Views: 1840

Answers (1)

Steve Chaloner
Steve Chaloner

Reputation: 8202

.jpeg and .jpg are equivalent extensions - jpg exists due to the historic requirements of Windows to have an 8.3 filename.extension format.

To get the necessary extension, pull it out of the content type:

final String contentType = file.getContentType();
contentType.substring(contentType.lastIndexOf("/") + 1)

Upvotes: 2

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