Hi ben Thanks for your idea. In my case, I can't use it, since the generated img tag must be a static file (a file: url) and not a link to a servlet. That's why the processing must be when generating the html. Thanks Yair
-----Original Message----- From: ben short [mailto:[EMAIL PROTECTED] Sent: Monday, November 26, 2007 1:19 PM To: Tomcat Users List Subject: Re: multithreaded with taglibs Yair, I created a eshop website that dynamically re sizes images depending on the url. Here is a simple outline of what happens. A new product is created by the shop admin. Images are then uploaded and stored in a database in the uploaded size. When a product page is viewed the controller ( im using spring ) pulls the product object from the db and passes it to the view, a jsp page. The jsp then generates a image tag as show below. <img width="175px" name="mainImage" src="productimages/69_s_medium.jpg" title="Kitchen Stove and Utensils"/> The browser then renders the page, when it finds a image tag it then uses another thread to load the image. this is standard browser behavior. The productimages url is mapped to another controller, that parses the url. The first part of the url is the image id, the next part is tells it that the part after that is a size rather than a dimension. The controller knows the expected dimensions for a medium image. The controller then pulls the image from the db and resizes it before sending it to the browser. The controller is actually smarter than that, and does on disk caching of resized images and check the last mod time, but i wont detail that here. So what is happening here is the browser is rendering the html created by the jsp page and then making another request to get the images, which is then making tomcat use another thread to generate the image. Sound like what your trying to achieve? Ben On Nov 26, 2007 10:15 AM, David Cassidy <[EMAIL PROTECTED]> wrote: > Errr > > how will you allow people to access the file over the internet with a > file:// protocol ? > > are you only running the app and the users browser on the same machine ? > > file://C:\My Documents\image.gif > > ? > > Can't see that working over the internet.... > > > > On Sun, 2007-11-25 at 13:56 +0200, Yair Ben-Meir wrote: > > Thanks, but that's not good for me, I need the page to be with a real file > > link (file://), not through a servlet. > > > > > > -----Original Message----- > > From: Pid [mailto:[EMAIL PROTECTED] > > Sent: Sunday, November 25, 2007 11:53 AM > > To: Tomcat Users List > > Subject: Re: multithreaded with taglibs > > > > Yair Ben-Meir wrote: > > > Let say that the tag will have to generate the image with a text given as > > an > > > attribute, and it takes "time" so I want the page to continue: > > > > > > <my:img src="file" text="first"/> > > > > > > . > > > > > > <my:img src="file" text="first"/> > > > > Why are you doing this with a tag, rather than sending the parameter to > > a servlet that serves an image into it's output stream? > > > > You exploit the browsers own request handling capabilities this way. > > > > <img src="/img-app/generate?param1=some+text+here" alt="an image" /> > > > > > > p > > > > > > > > > -----Original Message----- > > > From: David Cassidy [mailto:[EMAIL PROTECTED] > > > Sent: Thursday, November 22, 2007 6:08 PM > > > To: Tomcat Users List > > > Subject: Re: multithreaded with taglibs > > > > > > Hi > > > > > > What is your tag going to produce ? > > > is it an <IMG SRC="....."> type tag ? > > > > > > or how are you allowing the browser to access the image ? > > > > > > Ta > > > > > > D > > > > > > On Thu, 2007-11-22 at 14:57 +0200, Yair Ben-Meir wrote: > > >> Hi > > >> > > >> Is there a way to write a taglib that will do a multithreading work? > > >> Meaning, that tomcatwill not wait till the first instance of the tag > > >> will end, and continue to the rest of the page, and maybe start with > > >> another instance, and than it will insert the result of each instance > > >> in the right place? > > >> > > >> > > >> > > >> Example: > > >> > > >> <my:img name=""/> > > >> > > >> . > > >> > > >> <my:img name=""/> > > >> > > >> > > >> > > >> And let say that each my:img is supposed to download the image and > > >> save it locally or something like that, and I don't want tomcat to > > >> wait till the first tag is finished. > > >> > > >> > > >> > > >> > > >> > > >> Thanks > > >> > > >> > > >> > > >> > > >> > > >> Yair Ben-Meir > > >> > > >> > > >> > > >> Office: 073-7997801 > > >> > > >> Fax: 073-7997800 > > >> > > >> Mob: 054-5769681 > > >> > > >> > > >> > > >> > > >> > > >> > > > > > > > > > --------------------------------------------------------------------- > > > To start a new topic, e-mail: users@tomcat.apache.org > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > To start a new topic, e-mail: users@tomcat.apache.org > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > --------------------------------------------------------------------- > > To start a new topic, e-mail: users@tomcat.apache.org > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > --------------------------------------------------------------------- > > To start a new topic, e-mail: users@tomcat.apache.org > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
