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Posted to users@tomcat.apache.org by Peter Choe <ch...@mindspring.com> on 2003/01/09 17:40:19 UTC
reading forms
is there a way to specify the order of the parameters are read from a form
in a servlet?
it seems that if i do request.getParameterNames() there is no logic to
which parameters are read first.
Peter Choe
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Re: reading forms
Posted by Peter Choe <ch...@mindspring.com>.
thanks for the information.
i was just trying to write a generic servlet to read in any forms and email
or print the results to the users.
Peter Choe
At 11:54 AM 1/9/2003, Jason Pyeron wrote:
>for lack of a better description the names are radmonized. This is because
>they are in a hash.
>
>if you need them in a given order, you may want to "number" them.
>
>
>ex:
>
> <form>
> <input name="field_00_id"/>
> <input name="field_01_fname"/>
> <input name="field_99_memo"/>
> <input name="field_50_authnum"/>
> </form>
>
> then you can take request.getParameterNames() and sort it. if you still
>have trouble using it, then you can make a translation hash
>
>for all in (request.getParameterNames())
> xlatehash.put(val.substring(10),val);
>
>now you can access them in order or by unprefixed name.
>
>does this help?
>
>IMHO: if you need the names in order there is a problem with you logic,
>cause there is no gaurentee that the browser will send them in any give
>fasion.
>
>-jason pyeron
>
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>
>
>
>
>On Thu, 9 Jan 2003, Peter Choe wrote:
>
>is there a way to specify the order of the parameters are read from a form
>in a servlet?
>
>it seems that if i do request.getParameterNames() there is no logic to
>which parameters are read first.
>
>Peter Choe
>
>
>
>--
>To unsubscribe, e-mail: <ma...@jakarta.apache.org>
>For additional commands, e-mail: <ma...@jakarta.apache.org>
>
>
>
>
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Re: reading forms
Posted by "Craig R. McClanahan" <cr...@apache.org>.
On Thu, 9 Jan 2003, Peter Choe wrote:
> Date: Thu, 09 Jan 2003 11:40:19 -0500
> From: Peter Choe <ch...@mindspring.com>
> Reply-To: Tomcat Users List <to...@jakarta.apache.org>
> To: tomcat-user@jakarta.apache.org
> Subject: reading forms
>
> is there a way to specify the order of the parameters are read from a form
> in a servlet?
>
> it seems that if i do request.getParameterNames() there is no logic to
> which parameters are read first.
>
There is no guaranteed order. In fact, there's no guaranteed order for
the client to send request parameters to the server either.
> Peter Choe
>
Craig
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Re: reading forms
Posted by Dan Lipofsky <da...@nuserve.com>.
> for lack of a better description the names are radmonized. This is because
> they are in a hash.
>
> if you need them in a given order, you may want to "number" them.
If it is a GET request you can do request.getQueryString()
and parse the query string by hand. A bit painful and it
doesn't work for POST requests.
> IMHO: if you need the names in order there is a problem with you logic,
> cause there is no gaurentee that the browser will send them in any give
fasion.
unless it is a GET request and the URL is static or constructed
by javascript with the parameters in the URL. Then you have a
gaurenteed order.
- Dan
> On Thu, 9 Jan 2003, Peter Choe wrote:
>
> is there a way to specify the order of the parameters are read from a form
> in a servlet?
>
> it seems that if i do request.getParameterNames() there is no logic to
> which parameters are read first.
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Re: reading forms
Posted by Jason Pyeron <ja...@pyeron.com>.
for lack of a better description the names are radmonized. This is because
they are in a hash.
if you need them in a given order, you may want to "number" them.
ex:
<form>
<input name="field_00_id"/>
<input name="field_01_fname"/>
<input name="field_99_memo"/>
<input name="field_50_authnum"/>
</form>
then you can take request.getParameterNames() and sort it. if you still
have trouble using it, then you can make a translation hash
for all in (request.getParameterNames())
xlatehash.put(val.substring(10),val);
now you can access them in order or by unprefixed name.
does this help?
IMHO: if you need the names in order there is a problem with you logic,
cause there is no gaurentee that the browser will send them in any give fasion.
-jason pyeron
--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- -
- Jason Pyeron http://www.pyerotechnics.com -
- Owner & Lead Pyerotechnics Development, Inc. -
- +1 410 808 6646 (c) 500 West University Parkway #1S -
- +1 410 467 2266 (f) Baltimore, Maryland 21210-3253 -
- -
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
This message is for the designated recipient only and may contain
privileged, proprietary, or otherwise private information. If you
have received it in error, purge the message from your system and
notify the sender immediately. Any other use of the email by you
is prohibited.
On Thu, 9 Jan 2003, Peter Choe wrote:
is there a way to specify the order of the parameters are read from a form
in a servlet?
it seems that if i do request.getParameterNames() there is no logic to
which parameters are read first.
Peter Choe
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