strange behaviour
in [Lisp]
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From: Haris Bogdanovi� on 22 Jun 2010 16:21 Hi. I have this piece of code: --------------------------------------------------------------------- (defun start-page () (cl-who:with-html-output-to-string (*standard-output* nil :indent t) (:html (:body (:image :alt "alt" :src "file:///c:/pics/image01.jpg"))))) ----------------------------------------------------------------------- and when I go to http://localhost:5000, where my hunchentoot is, it just renders alternative text "alt" but if copy source code that is produced by this: ------------------------------------------------------------------- <html> <body> <image alt='alter' src='file:///c:/pics/image01.jpg'></image> </body> </html> -------------------------------------------------------------------------------- and put it in a new html file (a.html for example) and then douible click on that file then firefox renders the picture instead of alternative text. Why doesn't it render a picture in the first case ? Thanks
From: RG on 22 Jun 2010 16:42 In article <hvr60h$ghs$1(a)gregory.bnet.hr>, "Haris Bogdanoviæ" <fbogdanovic(a)xnet.hr> wrote: > Hi. > > I have this piece of code: > --------------------------------------------------------------------- > (defun start-page () > (cl-who:with-html-output-to-string (*standard-output* nil :indent t) > (:html > (:body > (:image :alt "alt" :src "file:///c:/pics/image01.jpg"))))) > ----------------------------------------------------------------------- > and when I go to http://localhost:5000, where my hunchentoot is, > it just renders alternative text "alt" but if copy source code that is > produced by this: > ------------------------------------------------------------------- > <html> > <body> > <image alt='alter' src='file:///c:/pics/image01.jpg'></image> > </body> > </html> > ------------------------------------------------------------------------------ > -- > and put it in a new html file (a.html for example) and then douible click on > that file > then firefox renders the picture instead of alternative text. > Why doesn't it render a picture in the first case ? > > Thanks I'm surprised either one works. IMAGE is not a valid HTML tag. You want IMG instead. But if it really does work as a file but not when served then I would suspect a problem with the content-type header. rg
From: Haris Bogdanovi� on 22 Jun 2010 18:35 I put img instead of image and put the image in lispworks working dir and tried relative pathname to the image but no success. I guess hunchentoot has it's own current working dir so I should put my picture in that directory. How do I find out or set that directory ?
From: Thomas A. Russ on 22 Jun 2010 18:12 "Haris Bogdanovi��" <fbogdanovic(a)xnet.hr> writes: > Hi. > > I have this piece of code: > --------------------------------------------------------------------- > (defun start-page () > (cl-who:with-html-output-to-string (*standard-output* nil :indent t) > (:html > (:body > (:image :alt "alt" :src "file:///c:/pics/image01.jpg"))))) > ----------------------------------------------------------------------- > and when I go to http://localhost:5000, where my hunchentoot is, > it just renders alternative text "alt" but if copy source code that is > produced by this: .... > Why doesn't it render a picture in the first case ? Because we don't have your picture installed on our machines. And a lot of us aren't running Windows either, so even if we had your picture it would have a different file path. You need to point the image tag at a web-accessible URL and not at your local file system. We can't just randomly retrieve stuff from your file system (I'll bet you're glad about that). So put the picture somewhere that huchentoot will serve it and get to it with an http: URL instead. -- Thomas A. Russ, USC/Information Sciences Institute
From: Rupert Swarbrick on 22 Jun 2010 20:03
"Haris Bogdanoviæ" <fbogdanovic(a)xnet.hr> writes: > I put img instead of image and put the image in lispworks working dir > and tried relative pathname to the image but no success. > I guess hunchentoot has it's own current working dir > so I should put my picture in that directory. > How do I find out or set that directory ? The answer from Hannah is right. Would you like it if going to http://www.evilhaxors.com allowed them to force your browser to access any file on your file system (via sticking it in an <img> tag's href attribute)? The point is that http://localhost:5000 or whatever is treated as an internet address, whereas the html file you load straight from the hard drive is a local file (and seemingly allowed to refer to a literal file:/// url). This is not related to the fact you're serving it from hunchentoot I don't think. Rupert |