Har du testat detta:
jdbcTemplate.execute("INSERT INTO File (name, type, data) VALUES (?, ?, ?)",
new AbstractLobCreatingPreparedStatementCallback(lobHandler){
@Override
protected void setValues(PreparedStatement ps,
LobCreator lobCreator) throws SQLException,
DataAccessException {
ps.setString(1, dFile.getName());
ps.setString(2, dFile.getType());
Blob blob = dFile.getData();
int length = (int)blob.length();
byte[] b = dFile.getData(); //blob.getBytes(1, length);
int length = b.length;
InputStream is=new ByteArrayInputStream(b);
ps.setBinaryStream(3, is, length);
}
});