It sounds like what you're asking is:
How can you allow users to view images via the app without allowing them to
look at them directly with a browser?
If that's what you want to do, it can be accomplished by writing a servlet
that streams images and use it as the "src" attribute to your image tags.
This should get you started:
package img;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.ServletException;
public class ImageServlet extends HttpServlet{
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException{
try{
response.setContentType("image/jpg");
OutputStream o = response.getOutputStream();
BufferedInputStream in = new BufferedInputStream(
getServletContext()
.getResourceAsStream(
"/WEB-INF/forbidden_images/axis.jpg"));
byte[] buf = new byte[32 * 1024]; // 32k buffer
int nRead = 0;
while( (nRead = in.read(buf)) != -1 ) {
o.write(buf, 0, nRead);
}
o.flush();
o.close();
return;
}catch(Exception e){
// do something......
}
}
}
~
~
I'm not a streaming guru. It works but
someone else might be able to show you a more
elegant way to do it or how to do it from a JSP.
You'll probably want to pass the image's file name in the querystring.
Good Luck
-Ben
On Thursday 11 December 2003 01:29 pm, you wrote:
> Howdy,
> You asked how to block the user from seeing the images by putting the
> address in the browser. I told you one possible way, e.g. by putting
> them under WEB-INF. You can still access them from your servlets and
> JSPs from this location, but users can't. What part is unclear?
>
> Yoav Shapira
> Millennium ChemInformatics
>
> >-----Original Message-----
>
> From: Kiran Patel [mailto:[EMAIL PROTECTED]
>
> >Sent: Thursday, December 11, 2003 1:28 PM
> >To: [EMAIL PROTECTED]
> >Subject: Image Viewing
> >
> >Thank you for the replay and your help. If I move the images under
>
> WEB-INF
>
> >folder, I can't access the images from the application through the
> >internet. The images can only be viewed if you login and start the
> >application not by typing the url. For security purpose. Please help
>
> me
>
> >if anybody know how to do that. Thank you.
> >
> >Kiran Patel
> >
> >Howdy,
> >Put the images directory under the WEB-INF directory and change your
> >servlet accordingly.
> >
> >Yoav Shapira
> >Millennium ChemInformatics
> >
> >>-----Original Message-----
> >>From: Kiran Patel [mailto:[EMAIL PROTECTED]
> >>Sent: Thursday, December 11, 2003 9:53 AM
> >>To: [EMAIL PROTECTED]
> >>Subject: Image Viewing
> >>
> >>I am using jsp and tomcat 4.1 for my web application. My application=
> >
> >is
> >
> >>viewing image which is in the webapps/image folder. This image can
> >
> >also be
> >
> >>viewed from the internet by just typing the url. I want to block thi=
> >
> >s
> >
> >>since these are the confidential images. Does anybody know how to do=
> >
> >that.
> >
> >>Thanks in advance.
> >>
> >>Kiran Patel
>
> This e-mail, including any attachments, is a confidential business
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