Request parameters missing

R

Ravion

Dear all,

I am writing this after a strenous effort for a whole week, but ended up
without any clue. Here is the problem.

An application called "External" is built with JSF technology. Our module ,
let it be "internal". Both External and Internal are within the same EAR
file.External module talks with Internal through an interface servlet.
Interface Servlet receives the request from External module, and adds a URL
parameter ( like http://localhost:8080/Controller?id=200&value=300) and
does a RequestDispatcher.forward.

The controller from internal module receives it and prints the query string.
This shows that the query string is id=200&value=300.

Now the million dollar question, the internal module takes
request.getParameter("id") and this gives me a NULL!!!! When I print
request.getParameterMap, I get so many parameters which were set by External
in the request. Note that External does a "POST" to interface servlet, which
in turn again does a "forward" to controller.

I searched google for about 8 hours to get a link or clue, but so sad.
Kindly help, please...

One small doubt I am getting - Is JSF ServletRequest different from
HttpServletRequest ? Then the method of the controller (doGet/doPost) could
not have been called right? Or a new instance is getting created? Then how I
am getting query string... ahhhh

Warmest regards,
Ravion
 
L

Lew

Ravion said:
An application called "External" is built with JSF technology. Our module ,
let it be "internal". Both External and Internal are within the same EAR
file.External module talks with Internal through an interface servlet.
Interface Servlet receives the request from External module, and adds a URL
parameter ( like http://localhost:8080/Controller?id=200&value=300) and

How do you add the parameter?
does a RequestDispatcher.forward. ....
Now the million dollar question, the internal module takes
request.getParameter("id") and this gives me a NULL!!!! When I print

Are you sure it doesn't give you a null?
request.getParameterMap, I get so many parameters which were set by External
in the request. Note that External does a "POST" to interface servlet, which
in turn again does a "forward" to controller.

Perhaps the URL was added as an attribute, not a parameter?
One small doubt I am getting - Is JSF ServletRequest different from
HttpServletRequest ? Then the method of the controller (doGet/doPost) could
not have been called right? Or a new instance is getting created? Then how I
am getting query string... ahhhh

A request is a request is a request.

The JSF Faces Servlet grabs it first. The Sun Java EE tutorial goes into
great detail about the JSF life cycle, plus there are many articles out there
about it.

SSCCE, please.
<http://www.physci.org/codes/sscce.html>

(P.S., Andrew, that page has some "<%@" litter peeking through.)
 
R

Ravion

Hi Lew,

I am not adding a parameter, because we cannot add a parameter to request
manually. I read the string directly from a configuration file, somehwta
like Struts.

The internal module "does" gove me null, when I get parameter.

When I check request.getAttribute("id") or request.getParameter("id") -
both are null.

One more info, if I do the same thing without being sent from a JSF
application, instead from a test JSP, it works, and it works exactly as
expected.

Please help, thanks.

(Regarding multipost, I am extremely sorry, let me continue this)

Thanks an dregards,
Ravion
 
R

Ravion

Dear all,

I found the reason finally.

The external module was passing "MulipartRequest", a wrapper class which
wraps HttpServletRequest. And when a multipartrequest is received in a
servlet, request.getParameter will be null. Very useful learning, which
about 100 people could not find...

Thanks and regards,
Ravion
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Members online

No members online now.

Forum statistics

Threads
473,744
Messages
2,569,484
Members
44,903
Latest member
orderPeak8CBDGummies

Latest Threads

Top