The Wiki is your friend: http://wiki.apache.org/struts/StrutsFileDownload
Specifically, you will be interested in the downloadapp.zip sample I posted there... it has an example of serving a BLOB from a database. All you need to do is have a mapping to this Action, and use it as the src attribute of an <img> tag. As another poster said though, there is definitely a fair amount of overhead to doing this. That being said, I've done it to good effect on at least two occassions. But, you do have to think about whether it is appropriate... in my case, it was a client's logo in a frame that only changed when the user changed clients, very infrequent. I can't imagine I'd serve images from a database if it was going to be needed a lot... I'd have to have an exceptionally good reason for doing it. Maybe you do :) In any case, that sample app should show you how. Note too that even if you aren't using a version of Struts with the DownloadAction, what's there is still somewhat applicable, and there's nothing to stop you from bringing DownloadAction over to your app anyway AFAIK. -- Frank W. Zammetti Founder and Chief Software Architect Omnytex Technologies http://www.omnytex.com On Tue, September 27, 2005 12:23 pm, Braun, James F said: > Goal: Read a blob image from an Oracle database and render it on an html > page using the struts framework. > > I've never found a good way to do this and I was hoping someone had a > "best practice" suggestion. > > I have no trouble getting the image from the database. However, I wonder > if there isn't a better way to display it rather than writing it to a > physical file and then rendering it. I'm using the <html:img tag to > display the image now. > > All help appreciated. > > J. > > ImputStream pictureStream; > ResultSet rs; > > // create the query and execute it ... > > // get the result > pictureStream = rs.getBinaryStream("picture"); > > // I can write it to a physical file > File pictureFile = new File("/temp/picture.jpg"); > > try > { > FileOutputStream out = new FileOutputStream(pictureFile); > int chunk = 0; > while( (chunk = pictureStream.read()) != -1) > { > out.write(chunk); > } > out.close(); > out.flush(); > } > catch(FileNotFoundException ex) > { > System.err.println("selectionForm.populate.picturefile: " + > ex.getMessage()); > logger.error("selectionForm.populate.picturefile: " + > ex.getMessage()); > } > catch(IOException ex) > { > System.err.println("selectionForm.populate.picturefile: " + > ex.getMessage()); > logger.error("selectionForm.populate.picturefile: " + > ex.getMessage()); > } > > -- > This transmission is intended only for use by the addressee(s) named > herein and may contain information that is proprietary, confidential > and/or legally privileged. If you are not the intended recipient, you are > hereby notified that any disclosure, copying, distribution, or use of the > information contained herein (including any reliance thereon) is STRICTLY > PROHIBITED. If you received this transmission in error, please immediately > contact the sender and destroy the material in its entirety, whether in > electronic or hard copy format. Thank you. > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
