41846

how to use the image file located in local drive, for printing it in jsp page or servlet page?

Question:

I want to display the image located in my local drive. I am using sun java app server 8. For example If I generate a file abc.jpg dynamically and store it in c:\abc.jpg, then how could I use it in jsp or servlets? How to display it in the jsp or servlet pages? I know giving the path c:\abc.jpg in coding to display image wont work , because it is out of webserver..

Answer1:

Basically just create a Servlet which gets an InputStream of it with help of FileInputStream and writes it to the OutputStream of the HttpServletResponse along with a correct set of response headers with at least the content-type. Finally call this servlet in the src attribute of the <img> element along with the file identifier as request parameter or pathinfo. E.g.:

File file = new File("c:/abc.jpg"); response.setContentType(getServletContext().getMimeType(file.getName())); response.setHeader("Content-Length", String.valueOf(file.length())); response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\""); BufferedInputStream input = null; BufferedOutputStream output = null; try { input = new BufferedInputStream(new FileInputStream(file)); output = new BufferedOutputStream(response.getOutputStream()); byte[] buffer = new byte[10240]; int length; while ((length = input.read(buffer)) > 0) { output.write(buffer, 0, length); } } finally { if (output != null) try { output.close(); } catch (IOException logOrIgnore) {} if (input != null) try { input.close(); } catch (IOException logOrIgnore) {} }

You can find here a complete basic example: <a href="http://balusc.blogspot.com/2007/04/imageservlet.html" rel="nofollow">http://balusc.blogspot.com/2007/04/imageservlet.html</a>

Answer2:

Maybe everybody is misunderstanding the question.

If the images are on your local drive and you want your Web server to serve them up to the world, then as a first step you need to upload them to your Web server.

That done, you can use URLs in <img> tags to refer to their location on the server.

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