No I am not using any framework just the Websphere RAD tool using JSP
pages.
Also not using JQuery or Dojo
But sorry I looked again at the code and I am using an AJAX-style
XMLHttpRequest (this was written by software company)
Thanks again for your help.
RE: JAVA servlet sometimes not being run
Dan Kimmel
to:
Java Programming on and around the IBM i
21/11/2012
15:33
Sent by:
java400-l-bounces@xxxxxxxxxxxx
Please respond to Java Programming on and around the IBM i
Are you using JSP pages with Struts or some other framework?
If you haven't done XMLHttpRequest explicitly in your javascript, I doubt
RAD would do it for you. Are you using JQuery in your javascript? Or Dojo?
Either of those has methods that invoke XMLHttpRequest.
How does the payment processor know what page the request is coming from?
I'm guessing it comes from the Referer header (RFC2616 14.36). That's
something the browser puts in when it builds and sends a request to a
server. Basically, when you click a link to a url, the browser puts the url
of the page that contains the link into the Referer header. If you're using
frames, or some other mechanism that puts lots of pages into the viewport,
the browser can be confused as to which page actually is the referrer. I've
never actually tracked down what the browser puts in this header when you
use XMLHttpRequest as a scriptable substitute for clicking a link. The
protocol specifies certain conditions where this header should not be sent
at all, so it's possible XMLHttpRequest omits it.
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of mtodd@xxxxxxxxxxxx
Sent: Wednesday, November 21, 2012 3:07 AM
To: Java Programming on and around the IBM i
Subject: RE: JAVA servlet sometimes not being run
Don't be sorry! thanks for help.
App developed using Rational Application Developer running WAS(Websphere
Application Server) on our iSeries.
(If its OK I can send more info, but don't want to be to presumptious as
you do have your day jobs!)
I have not explictly used AJAX-style XMLHttpRequest calls but I think
WebSphere implements it.
Its not clear in Websphere how you explictly define the HTTP headers ? but
I am looking into it.
I can get the payment company to only allow the check out page URL into
their system, but given what you have said they maybe valid requests.
As I was thinking the other URL pages are invalid.
Thanks again.
RE: JAVA servlet sometimes not being run
Dan Kimmel
to:
Java Programming on and around the IBM i
20/11/2012
15:41
Sent by:
java400-l-bounces@xxxxxxxxxxxx
Please respond to Java Programming on and around the IBM i
Sorry. Not nearly enough information about your app to begin to make
suggestions. Are you using AJAX-style XMLHttpRequest calls to their site?
If so, you may need to be more explicit about what goes in the http headers
as you're at the mercy of the browser as to the default values it'll put in
there.
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of mtodd@xxxxxxxxxxxx
Sent: Tuesday, November 20, 2012 6:13 AM
To: Java Programming on and around the IBM i
Subject: RE: JAVA servlet sometimes not being run
Thanks for your idea, will try that.
But just found out from payment company that URL page they receive as
response from my app is not always the payment page from my application
(only page which has link to their website).
These pages are from my application but contain no code to go to their
link!
Thinking this is the problem, but cannot understand how this could happen.
Any ideas ??
RE: JAVA servlet sometimes not being run
Dan Kimmel
to:
Java Programming on and around the IBM i
19/11/2012
18:04
Sent by:
java400-l-bounces@xxxxxxxxxxxx
Please respond to Java Programming on and around the IBM i
Some customer's browser still has old version of the page or javascript
cached? Best practice is to change the name of your javascript file when
you make changes in it to prevent cached copies from being used.
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of mtodd@xxxxxxxxxxxx
Sent: Monday, November 19, 2012 5:19 AM
To: Java Programming on and around the IBM i
Subject: RE: JAVA servlet sometimes not being run
Hi,
Implemented Jeffs suggestion where my Java Script dynamically fills Action
variable.
But program still sometimes goes to payment company withour writing record
to iSeries.
I know this because I write a log record when Javscript writes to iSeries
(there is no record) but there is a log record stating that payment company
has called my response URL.
Have no idea how this keeps happening as Jeffs suggestion seemed foolproof.
Any ideas/help greatly appreciated.
RE: JAVA servlet sometimes not being run
Jeff Burcher
to:
'Java Programming on and around the IBM i'
06/11/2012
15:43
Sent by:
java400-l-bounces@xxxxxxxxxxxx
Please respond to Java Programming on and around the IBM i
I am an RPG programmer and have never really used JAVA for web development.
What I suggested should work regardless of the programming language. I use
PHP for my web development work, but I think RPG 4 can do web stuff as well
by building HTML on the fly? I have used BCD's WebSmart products in the
past to integrate that type of work on the AS400. Good Luck!
Thanks,
Jeff Burcher - IT Dept
Allred Metal Stamping
PO Box 2566
High Point, NC 27261
(336)886-5221 x229
jeff@xxxxxxxxxxxxxxx
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-
bounces@xxxxxxxxxxxx] On Behalf Of mtodd@xxxxxxxxxxxx
Sent: Tuesday, November 06, 2012 10:31 AM
To: Java Programming on and around the IBM i
Subject: RE: JAVA servlet sometimes not being run
OK thanks for quick reply.
Will give that ago, but might take me a while as not to proficient a
Java/Java
script porgrammer (more RPG!)
RE: JAVA servlet sometimes not being run
Jeff Burcher
to:
'Java Programming on and around the IBM i'
06/11/2012
15:22
Sent by:
java400-l-bounces@xxxxxxxxxxxx
Please respond to Java Programming on and around the IBM i
Set your Action destination for the Form as a variable and only the
JAVA servlet sets the variable as the pay site. Set the default for
the
variable as an
error or message page or wherever you need it to go if the JAVA
servlet
fails,
then it has to go through the JAVA servlet to get to the pay site. The
other
option is have the Form Submit to a processing page that does the JAVA
servlet that diverts it to the appropriate place from there.
Jeff
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-
bounces@xxxxxxxxxxxx] On Behalf Of mtodd@xxxxxxxxxxxx
Sent: Tuesday, November 06, 2012 9:23 AM
To: java400-l@xxxxxxxxxxxx
Subject: JAVA servlet sometimes not being run
When submit button on HTML form is pressed, JavaScript is run to
call a
JAVA
Servlet.
If processing in Servlet is successful I go to an external payment
company
site.
But have had instances where JavaScript is not run and user goes
directly
to
payment site without Servlet being run.
Application processes about 1000 users in a week, and maybe just 1
or
2
of
those will be as above.
I have never been able to recreate problem in my testing.
I am running app on a Websphere server running on an iSeries.
Please help!
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