Redirect with a POST instead of a GET

["St-Pierre, Alain" <al...@cgi.com>]

Is there a built-in mechanism in Struts which allows a Redirect with an
HTTP POST method instead of GET method?

 

Here is my requirement:

I have two separate Application servers.  The server A will host my html
form.

When I submit my form, I want to go in an Action class of my server A,
which will prepare a new form (different one), to be sent out to server
B.  

In order to pass over the control the server B, from now on, which will
response to the browser, to render the end result.

 

Here is a sequence diagram to make it clearer:

 

Browser                       Server A
Server B

 

----------------post------------->

                                    >--prepare new form--<

<--------------redirect----------

--------------------------------------------------------------------new
form---->

<-------http response
(rendering)-----------------------------------------

 

 

My question is:

How can I create a new FORM to be POSTed, from Struts, and REDIRECT it
to the browser?  

The browser will, for sure have to sent that new form to the other
server.

 

Alain

 

 

Re: Redirect with a POST instead of a GET

[Michael Jouravlev <jm...@gmail.com>]

On 2/23/06, St-Pierre, Alain <al...@cgi.com> wrote:
> Here is my requirement:
>
> I have two separate Application servers.  The server A will host my html
> form.
>
> When I submit my form, I want to go in an Action class of my server A,
> which will prepare a new form (different one), to be sent out to server
> B.

Why would not you call B from A, then get response and send it back to
browser, so that browser would not even know about B existance?

> The browser will, for sure have to sent that new form to the
> other server.

Is this a requirement?

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Re: Redirect with a POST instead of a GET

[Neil Erdwien <ne...@k-state.edu>]

I don't think you want an HTTP redirect at all.  I would include, on the 
second form (the one created by A to be posted to B), client-side 
JavaScript that does the form submission when the page is loaded.

If there is any chance that JavaScript wouldn't be available, you could 
include static HTML on the page that says something to the effect of 
"Your transaction is in process.  Select the continue button to complete 
the process".  Then have the "continue" button be the form submission.

Another possibility would be to have A contact B for the client, and 
relay the response.

Michael Jouravlev wrote:
> On 2/23/06, St-Pierre, Alain <al...@cgi.com> wrote:
>> Is there a built-in mechanism in Struts which allows a Redirect with an
>> HTTP POST method instead of GET method?
> 
> Use HTTP response code 307. If browser supports it correctly, a user
> has to confirm redirection. Many browsers do not support this response
> code at all.
> 
> See: http://ppewww.ph.gla.ac.uk/~flavell/www/post-redirect.html
> 
> Michael.
> 
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-- 
Neil Erdwien, neil@k-state.edu, Web Technologies Manager
Computing and Network Services, Kansas State University

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Re: Redirect with a POST instead of a GET

[Michael Jouravlev <jm...@gmail.com>]

On 2/23/06, St-Pierre, Alain <al...@cgi.com> wrote:
> Is there a built-in mechanism in Struts which allows a Redirect with an
> HTTP POST method instead of GET method?

Use HTTP response code 307. If browser supports it correctly, a user
has to confirm redirection. Many browsers do not support this response
code at all.

See: http://ppewww.ph.gla.ac.uk/~flavell/www/post-redirect.html

Michael.

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