Re: can a non struts application be called from inside stuts application.

Thu, 26 Aug 2004 11:40:28 -0700

I wouldn't use HttpClient for this if what you want to do is call the business logic called by the servlets -- particularly if you have access to the source code of the servlets.

My 3 cents ...

Shilpa Nalgonda wrote:

from where do i get this package, and where exactly will doPost method
go...i have never used httpClient Package, so can you point me to the
correct resource..

-----Original Message-----
From: Pingili, Madhupal [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 26, 2004 2:17 PM
To: 'Struts Users Mailing List'
Subject: RE: can a non struts application be called from inside stuts
application.


How about using HTTP Client package like this:
    public static String getUrlResponse(String url) {
      String result = null;
      HttpClient client = new HttpClient();
      // Create a method instance.
      HttpMethod method = new GetMethod(url);
      // Execute the method.
      try {
        int statusCode = client.executeMethod(method);
      } catch (HttpRecoverableException e) {
          //log the error
      } catch (IOException e) {
          //log the error
      }
      // Read the response body.
      byte[] responseBody = method.getResponseBody();
      if( result == null ) {
        result = new String(responseBody);
      }
      // Release the connection.
      method.releaseConnection();
      return result;
    }

In your case, have 3 methods method1, method2 and method3 for 3 servlets
and execute them one after the other.

Just try and see if it solves your problem.

------------
Reddy Pingili



-----Original Message-----
From:   Shilpa Nalgonda [SMTP:[EMAIL PROTECTED]
Sent:   Thursday, August 26, 2004 2:03 PM
To:     Struts Users Mailing List
Subject:        RE: can a non struts application be called from inside stuts
application.

O.k thats great, but i have make a 3 different servlet calls one by one in
my action class.
Like  gotoservlet1 then gotoServlet2 and then gotoServlet3,

how can i achieve that in one action forward...

-----Original Message-----
From: Jim Barrows [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 26, 2004 2:01 PM
To: Struts Users Mailing List
Subject: RE: can a non struts application be called from inside stuts
application.





-----Original Message-----
From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 26, 2004 10:53 AM
To: Struts Users Mailing List
Subject: RE: can a non struts application be called from inside stuts
application.




Servlets are accessed by URLs, action classes forward to
URLs.  So you can
forward to them, but call them directly akin to a method
call... I don't
think so... not without a lot of handwaving and chanting anyway.


so you mean to say that i have to rewrite my old servlet 

class into an
action class.
My old servlet class which takes httprequest and httpresponse
and calls do
post should be converted to an action class execute method having the
functionality of do post method.


Not really... if your forward can be the URL /gotoMyServlet, then your
okay... it will still work as is.  If in your code you want to do
something
like gotoMyServlet.doPut(blah), then your going to have to do some work to
set up the environment that the servlet expects to run in.





-----Original Message-----
From: Jim Barrows [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 26, 2004 1:43 PM
To: Struts Users Mailing List
Subject: RE: can a non struts application be called from inside stuts
application.





-----Original Message-----
From: Shilpa Nalgonda [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 26, 2004 10:37 AM
To: Struts Users Mailing List
Subject: can a non struts application be called from inside stuts
application.


i have  a shopping cart struts application, when update
button of a jsp is
clicked, some action is performed and after the successful
excution of that
action, a servlet which takes certain parameters should be
called from the
action class.

The servlets which i am talking about are non-struts based
and are already
implemented, and it would take much time to redo those using
struts, so i am
wondering if there is any way to reuse those and call those
servlets from
actions class.


Servlets are accessed by URLs, action classes forward to
URLs.  So you can
forward to them, but call them directly akin to a method
call... I don't
think so... not without a lot of handwaving and chanting anyway.







-----Original Message-----
From: Jim Barrows [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 10, 2004 4:33 PM
To: Struts Users Mailing List
Subject: RE: Servlet help for a Struts programmer





-----Original Message-----
From: Michael McGrady [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 10, 2004 1:22 PM
To: Struts Users Mailing List
Subject: Re: Servlet help for a Struts programmer


At 12:57 PM 8/10/2004, you wrote:

Yes, Struts is based on Servlets, but you don't have to know
anything about Servlets to make a useful Struts webapp.


I wonder if this is true.  I cannot imagine that it could be.
Maybe it
is.  I am beginning to think so.  ///;-)


Try it yourself.... no JSP's.  No struts, and basic CRUD
operations on an
address book.

Now today, you would probably be smart.  You would have a
CRUD servlet for
the "actions", that would redirect to a servlet for
generating HTML.  That's
4 serlvets handling CRUD, one servlet to generate the
add/edit form page,
one servlet to generate the list address page.

And no, you don't get to use jakarta's ECS either!!!  Nope.
Not at all..
you can however drool over it :)

out.println( "<html>");
        out.println( "<head>");
                out.println( "<title>THis is the title of my
page.</title>");
        <out.println( "</head>");

Or:

out.println( "<html>"
                +"<head>"
                +"  <title>This is the title of my page.</title>");
                +"</head>");




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