Howdy, It would be <img src="http://yourserver/yourservlet?param=paramValue"; alt="something">
Yoav Shapira Millennium ChemInformatics >-----Original Message----- >From: Jon Yeargers [mailto:[EMAIL PROTECTED] >Sent: Friday, December 12, 2003 11:30 AM >To: [EMAIL PROTECTED] >Subject: Re: Image Viewing > >So your tag would be <img src='servlet(params);' alt='something'> ? > >If you do this do the images get cached by the browser? > > >> 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 >>> communication, and may contain information that is confidential, >>> proprietary and/or privileged. This e-mail is intended only for the >>> individual(s) to whom it is addressed, and may not be saved, copied, >>> printed, disclosed or used by anyone else. If you are not the(an) >>> intended >>> recipient, please immediately delete this e-mail from your computer >>> system >>> and notify the sender. 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] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
