[PLUG] downloading a website (that has java scripts, &c.)
Pelster, John
John.Pelster at usi.net
Sat Mar 23 06:56:22 UTC 2002
The first thing that makes this a tricky proposition are the frames... When
you go to http://www.colorado.edu/physics/2000 right click in Netscape on
the main frame and chose "Open frame in a new window." First problem
solved.
Now go to your applets... I think the URLs you are looking for are:
http://www.colorado.edu/physics/2000/lasers/index.html
http://www.colorado.edu/physics/2000/lasers/lasers2.html
http://www.colorado.edu/physics/2000/lasers/lasers3.html
http://www.colorado.edu/physics/2000/lasers/lasers4.html
Go ahead and use wget (or I like curl) to get these... Now, you say your
having problems with the applets... I'll walk you through the first one:
View the source of the first page... You'll see, in APPLET tags:
CODE="laser.LaserApplet" CODEBASE="../applets"
Now, open up http://www.colorado.edu/physics/2000/applets/laser.LaserApplet,
you won't get anything. Very frustrating... But what kind of a name for an
applet is laser.LaserApplet? It should have an extension of .class.
Furthermore, on the Java platform, a dot shows the package heirarchy, which
is in turn reflected by the file system... So, open up:
http://www.colorado.edu/physics/2000/applets/laser/LaserApplet.class and
you'll be prompted to download the file... Download it.
Now, when you're daughter demonstrates this to her class, I recommend
setting up Apache on the laptop to serve the HTML and Applets... If I
remember correctly, this makes things a lot easier.
Good luck!
-- John Pelster
-----Original Message-----
From: Dean S. Messing [mailto:deanm at sharplabs.com]
Sent: Friday, March 22, 2002 5:23 PM
To: plug at pdxlinux.org
Subject: [PLUG] downloading a website (that has java scripts, &c.)
As I've revealed many times in the past, I'm pretty much of an ignoramous
when it comes to lots of areas that most on PLUG know a great deal about.
Here's yet one more.
My (12 year old) daughter is giving a talk on lasers on Monday (something I
_do_ know something about (finally!!)).
She has cobbled together a nice talk, based on what I've taught her but it
lacks one thing: some nice "demos" of the various ideas. She's used xfig to
draw some pictures of "population inversion", "light pumping" &c., but I'd
like to go further.
She's giving it on my laptop using powerpoint (but running under win4lin on
linux :-).
So what's this got to do with downloading the contents of a website, you
ask? Well, there's a wonderful educational physics site
www.colorado.edu/physics/2000
which has a subsection on lasers. There are some gorgeous Java applets
that would make perfect little on-screen demos.
So I tried downloading the whole site with
`wget -r -l 8 -k -nh -p http://www.colorado.edu/physics/2000'
and got a bunch of stuff (about 9.5 Megs worth).
All the web pages, the .jpg images, &c. appear to be there.
But the "applets" directory is nearly empty. Furthermore the site uses
(according to a colleague) "dynamic web pages". So, e.g. index.html is
(evidently) generated by something called index.pl (a Perl script?). When I
click on my local copy of index.html (which references index.pl) Netscapce
asks me if I want to download it. Not the behaviour I was expecting.
Anyway, all this is way out of my areas of expertise (and comfort zone). Can
you sing: "Donno much about java_scripts, donno much about ...)
You get the idea.
Can anyone help me? She needs only three or four of the applets but I
thought it would be oh, so much easier to simply download the whole she-bang
and then just have the desired applets running in Netscrape and switch to
them as needed (win4lin/windows on one x-server on VT <ctl-F8>,
KDE/netscrape on another server on VT <ctl-F7>.
I do it all the time.
Thanks
Dean
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