displaying image in jsp

Also, storing the byte array in the session strikes me as a Bad Idea, as any big images (or large number of users) will crash the container with an out of memory error..

Why not get the array straight from the db, and push it straight out to the user?

As I said though, it all depends on what you are saving in the database...

If you have just read the gif byte by byte, and written that into the database, what you are doing should work...maybe you just need:

<%
      byte[] bytes = (byte[]) session.getAttribute("image");
     OutputStream stream = response.getOutputStream();
     stream.write(bytes);
     stream.flush() ;
%>
Tim

>> the content type is set to "image/gif"

;-)

I'll get me coat..... ;-P

hahahaha     >_<

No need, it's a lovely day ;-)

Hello hi,

i tried with the following code u suggested

<%
     byte[] bytes = (byte[]) session.getAttribute("image");
     InputStream is = new ByteInputStream( bytes ) ;
     Image image = ImageIO.read( is ) ;
     OutputStream stream = response.getOutputStream();
     ImageIO.write( image, "JPG", stream ) ;
%>



but still the image is not displayed.
please send me with some other alternative..
bye
waiting for the reply

What is stored in the database?

The pixel values?

What sort of image?  Indexed?  Have you stored the palette?

From duplicate question posted:

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 we are storing GIF image in oracle blob object as follows

Database : Oracle 9i

The below code is used to insert the image in to the database. the column type is BLOB.

File compLogo = new File(strImage);            
InputStream fis = new BufferedInputStream(new FileInputStream(logo));
prepStmtAddNew = conAddNew.createStatement();
prepStmtAddCmp.setBinaryStream(3, fis, fis.available());
intUpdate = prepStmtAddNew.executeUpdate(sqlQry);

The following code is used to retrieve the image from the database.

              imgBlob = rs.getBlob(1);
              int len = new Integer( new Long( imgBlob.length()).toString() ).intValue();
              bytes = imgBlob.getBytes(1,len);

then the obtained bytes is passed to the jsp page.

<%

        response.setContentType("image/gif");
        byte[] bytes = (byte[])session.getAttribute("logo");
        if(bytes.length > 0)
        {
        InputStream is = new ByteArrayInputStream(bytes);
        BufferedImage image = ImageIO.read(is);
        OutputStream os = response.getOutputStream();
        ImageIO.write(image, "gif", os);
        }
%>

but unable to display the image..
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

if you read the bytes out of the database, and write them into a new file on the hard-disk, is the file the same size as the original?

Can you view it with a normal image viewer?

Assuming the image is being read correctly out of the database, your original code should work ok...

ie:

<%
     response.setContentType("image/gif");
     byte[] bytes = (byte[]) session.getAttribute("image");
     OutputStream stream = response.getOutputStream();
     stream.write(bytes);
     stream.flush() ;
%>

However I still don't like it being stored in the session ;-)

Tim