Java result set getblob and getobject

I am having problem writing / reading BufferedImage

java dataType here . When writing, it seems to have no problem with the inserted data, but when reading, I have a problem using the getObject method from the java ResultSet (for some reason there must be a method getObject

, so I can read any data types and convert them after). When I insert BufferedImage dataType into mysql, I use inputStream and it is 42559 in size by the length of the byte array, but I read it using the getObject

length is not 42559, but its size turned to 42586, so I cannot read it back using the " ImageIO.read "(it returns null)

Here is my embed code:

ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write((BufferedImage) vals[i], "jpg", baos);
InputStream is = new ByteArrayInputStream(baos.toByteArray());
ps.setBinaryStream(i + 1, is);

      

        
        
        
      

    

Here is my code:

Object set = rs.getObject(i + 1);

      

        
        
        
      

    

And here is my envelope to BufferedImage code:

ByteArrayOutputStream b = new ByteArrayOutputStream();
ObjectOutputStream o = new ObjectOutputStream(b);
o.writeObject(set);
o.flush();
byte res[] = b.toByteArray();
o.close();
b.close();

System.out.println("Cek variabel: " + set.getClass() + "-" + res.toString() + "-" + res.length);
Blob blob = KubraLib.Conn.ConnSelect.getMySQLConn().createBlob();
blob.setBytes(1, res);
System.out.println("Cek variabel: " + blob.toString());

InputStream is = blob.getBinaryStream();
System.out.println("Cek variabel: " + is.toString());

bi = ImageIO.read(is);
System.out.println("Cek hasil: " + bi.toString()); <-- Returns java.lang.NullPointerException

is.close();

      

        
        
        
      

    

Any help would be appreciated :). And im relatively new with stack overflow, if there is any mistake in this post i am sorry :))