Hans, I just got your book on JSP, looks to be the best one on the market BTW. I have just skimmed through it and thought I saw something in there where you talk about file upload? Is that the case or am I missing something.
Thanks, Stef ----- Original Message ----- From: "Hans Bergsten" <[EMAIL PROTECTED]> To: "Tag Libraries Users List" <[EMAIL PROTECTED]> Sent: Wednesday, November 06, 2002 11:30 PM Subject: Re: Tag for uploading > Martin Cooper wrote: > > [...] > > The Struts <html:file> tag generates an HTML <input type="file"> element, > > and doesn't actually handle the request. If the latter is what you are > > looking for, I'm not sure how feasible that really is in a JSP page. > > > > The issue is that parsing a multipart request consumes the input stream, so > > you can only do that once. Some containers (e.g. Resin) have built-in > > multipart handling, and if that's enabled, it should provide all you need. > > But your pages will have to "know" that the container did that, and have to > > "know" how to access the uploaded files. That's not portable. > > > > If your container doesn't support multipart handling, or you've disabled it, > > then you might be able to wrap a tag around a package such as Commons > > FileUpload: > > > > http://jakarta.apache.org/commons/fileupload/ > > > > The main issue with this is how you would access non-file parameter values > > in the rest of the JSP page. Calls to request.getParameter() (either direct > > or indirect, using tags) after parsing the multipart request will not work, > > since FileUpload will have "stolen" the parameters. You'd have to obtain the > > values directly from the FileUpload instance, since there is no way to tell > > the container about the parameters (short of creating your own JSP page base > > class and wrapping the request, but that's getting even more far fetched! > > :). > > > > In short - use a servlet! :-) > > An alternative that solves some of the issues Martin describes is to > use a filter, like the file upload filter described in this article > by Jason Hunter: > > <http://www.javaworld.com/javaworld/jw-06-2001/jw-0622-filters-p4.html> > > Hans > -- > Hans Bergsten [EMAIL PROTECTED] > Gefion Software http://www.gefionsoftware.com > JavaServer Pages http://TheJSPBook.com > > > -- > To unsubscribe, e-mail: <mailto:taglibs-user-unsubscribe@;jakarta.apache.org> > For additional commands, e-mail: <mailto:taglibs-user-help@;jakarta.apache.org> > -- To unsubscribe, e-mail: <mailto:taglibs-user-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:taglibs-user-help@;jakarta.apache.org>
