Re: confusion about caching, need some advice

[Christian Faubel]

Thank you for the advice. The Option in the Browser doesn't help, because the image file seems to be cached on the server side. I have done a simple test: I start the thread in the servlet which is doing the image capture and writing of the jpg file. I access this file from lets say computer a with a browser: http://mycomputer:8080/image.jpg, i access it again after the time expired for updating the image from the servlet, still I see the first image token. Then I acces the image file from let's say computer b and push the relaod button. Afterwards I acces the same address from computer a by just typing the address again and I see the updated image. More ideas? thanks in advance Christian Faubel "Kumar, Ashutosh(sdc)" wrote: > There is always an option in Browser to refresh the cache and delete the > files. from there you can do this. > > ashu > > > -----Original Message----- > > From: Christian Faubel [SMTP:[EMAIL PROTECTED]] > > Sent: Wednesday, August 02, 2000 8:04 AM > > To: [EMAIL PROTECTED] > > Subject: confusion about caching, need some advice > > > > I am currently working on an webcam application using Servlets and Swing > > Applets. The servlet starts after a request from the applet a thread > > that writes a .jpg file to a directory under the root of the > > Javawebserver. Then the applet comes to fetch this image file by simple > > Url-connection. > > Now what is strange is the fact that this works nice using appletviewer, > > but not using the plugin with a standard browser, using a browser with > > plugin the image is never updated. It seems the Applet is reading a > > cached version of the image file but on the server side. Pushing the > > reload button in netscape navigator seems to free the cache, because > > afterwords the applet as well displays the actual image file. (strange > > enough with IE this doesn't work) > > As by accesing the image file on the webserver the servlet does not seem > > to handle this request but the javawebserver. So I wonder how I can turn > > of caching for the javawebserver. > > Another solution would be to periodically send the same command which > > sends Netscape browser, when you push the reload button. What does this > > command look like? > > > > Any help appreciated thanks in advance > > Christian Faubel > > -- > > /*************************************************************/ > > $B%U%!%&%Y%k!!%/%j%9!!;0MNEE5! (B $B%a%+%H%m%K%/%98&5f=j (B > > $B!!!!!!!!!!!!#H#A%7%9%F%`8&5fIt!!%m%\%F%#%/%95;=Q%0%k!<%W (B > > E-mail:[EMAIL PROTECTED] > > > > $B") (B570-8502 $BBg:eI\<i8};TBgF|ElD. (B1-1 > > > > __________________________________________________________________________ > > _ > > To unsubscribe, send email to [EMAIL PROTECTED] and include in the > > body > > of the message "signoff SERVLET-INTEREST". > > > > Archives: http://archives.java.sun.com/archives/servlet-interest.html > > Resources: http://java.sun.com/products/servlet/external-resources.html > > LISTSERV Help: http://www.lsoft.com/manuals/user/user.html > > ___________________________________________________________________________ > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff SERVLET-INTEREST". > > Archives: http://archives.java.sun.com/archives/servlet-interest.html > Resources: http://java.sun.com/products/servlet/external-resources.html > LISTSERV Help: http://www.lsoft.com/manuals/user/user.html -- /*************************************************************/ $B%U%!%&%Y%k!!%/%j%9!!;0MNEE5! (B $B%a%+%H%m%K%/%98&5f=j (B $B!!!!!!!!!!!!#H#A%7%9%F%`8&5fIt!!%m%\%F%#%/%95;=Q%0%k!<%W (B E-mail:[EMAIL PROTECTED] $B") (B570-8502 $BBg:eI\<i8};TBgF|ElD. (B1-1 ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html