Menu
I have a byte array representation of a Image. How to save it on disk as an image file.
I have already done this
OutputStream out = new FileOutputStream("a.jpg");
out.write(byteArray);
out.flush();
out.close();
But when I open the image by double-clicking it, it doesn't show any image.
752
Create a ByteArrayInputStream object by passing the byte array (that is to be converted) to its constructor. Read the image using the read() method of the ImageIO class (by passing the ByteArrayInputStream objects to it as a parameter). Finally, Write the image to using the write() method of the ImageIo class.
Java – How to save byte[] to a file write is the simplest solution to save byte[] to a file. // bytes = byte[] Path path = Paths. get("/path/file"); Files. write(path, bytes);
Images are binary data - this is easily represented as byte arrays. The image in the sample is stored in the database as a BLOB - not a string or location, that is, it is binary data.
Blob simply means (Binary Large Object) and its the way database stores byte array.
Other than failing to use a try/finally block (at least in the code you've shown) that should be fine. (You don't need to flush an output stream if you're closing it, by the way.)
As it's not working, that suggests byteArray doesn't actually contain a JPEG-encoded image. How have you created byteArray to start with? If it's a "raw" representation, you'll probably want to encode it, e.g. using the javax.imageio package.
138
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
