Easiest way to convert a Blob into a byte array
the mySql blob class has the following function :
blob.getBytes
use it like this:
//(assuming you have a ResultSet named RS)Blob blob = rs.getBlob("SomeDatabaseField");int blobLength = (int) blob.length(); byte[] blobAsBytes = blob.getBytes(1, blobLength);//release the blob and free up memory. (since JDBC 4.0)blob.free();