Re: getting input from local devices
Re: getting input from local devices
- Subject: Re: getting input from local devices
- From: Johann Werner <email@hidden>
- Date: Mon, 21 Jul 2008 09:03:14 +0200
Hi Neil,
thanks for your reply.
Am 20.07.2008 um 21:37 schrieb Neil MacLennan:
Johann,
You could either use a web app or a Java Client here. Many input
devices simply emulate the keyboard and so can enter their scanned
data directly into a regular INPUT element on a web page. Some
Javascript here could automatically submit the form to your WOApp or
do some Ajaxy stuff.
I did not think of that. That would make it really easy though only on
situations when the user actively uses the device. If I want to
display a page and automatically fetch input data from a device is JC
the only way to go?
If I would want to stay with a web app (just can't afford the time to
learn Swing & Co. at the moment) would it be the only solution to have
something like a local web server running that can be accessed by some
Ajax stuff on the page and triggers a script that in turn polls the
device and returns the data? Seems like breaking a fly on the wheel
for such (seemingly) simple situation.
jw
However, I implemented a GUI JavaClient App when I needed to use a
handheld barcode scanner. It's remarkably simple to hook up your
JavaClient EOs to the WOApp on the server in order to send your
input data to it.
http://web.mac.com/flor385/eSwamp/software/wojc_tutorial.html
Florijan's page is all you need, but if you want I could probably
resurrect what I did to get you started.
.neilmac
On 20 Jul 2008, at 16:47, Johann Werner wrote:
Hi list,
I am just thinking about what possibilities exist to get input data
from a device that is connected locally to the client (e.g. a
security card reader or a barcode scanner) into WO. An app deployed
as Java Client could easily interact with local devices but what if
a have a "normal" WO app? AFAIK JavaScript cannot access resources
other than the webbrowser itself and I didn't find any helpful
information on that matter.
Did anyone solve that problem or has any insight on how it could be
done? I can't imagine that this is a totally uncommon situation.
jw
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