Re: communicate servlet from jsp

hi partha,

my problem is not like this,calling get and post methods of servlets from jsps are working.

this is not my problem.my problem is calling other than get,post methods.

i am sending some sample code.

Servlet1.java

-------------------

import java.io.*;
import javax.servlet.http.*;
import javax.servlet.*;
public class Servlet1 extends HttpServlet{
public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException{
  PrintWriter out=res.getWriter();
  out.println("Hello this is Servlet1.....");
  getServletConfig().getServletContext().setAttribute("add",this);
}
public int add(int a,int b){

  return a+b;
}
}

Servlet2.java

------------------

import java.io.*;
import javax.servlet.http.*;
import javax.servlet.*;
public class Servlet2 extends HttpServlet{
public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException{
  PrintWriter out=res.getWriter();
  out.println("Hello i am Servlet2...");
  Servlet1 s=(Servlet1)(getServletConfig().getServletContext().getAttribute("add"));
  int a=s.add(4,5);
  out.println("the result is:"+a);
}
}

these 2 are working fine.2nd servlet displaying the result.

insteadof 2nd servlet i want jsp.

plz. help me for this.

thanks in advance

shiva.

Partharanjan Das <partharanjan.d@SONATA-SOFTWARE.COM> wrote:

Hi,

There are two ways of calling a servelt method from a jsp:

1. for any public method on the servlet, you can call getServlet() from
the JSP for any servlet within the same container specifying the name of the
servlet as specified in the web.xml. This will however bypass the http call
interposition that is done by the container and you are responsible for any
synchronisation or any call interposition requirement. Not recommended.
2. You can make a URLConnection to the servlet from your JSP and call
doGet() or doPost(). The logic should be there in these two methods.

Of course, you can use request dispatcher for mundane uses.

Hope this helps.

Regards,
Partha

----------
From: Sireesha Beeram [SMTP:sireesha_beeram@HOTMAIL.COM]
Sent: Wednesday, June 16, 2004 4:29 PM
To: SERVLET-INTEREST@JAVA.SUN.COM
Subje ct: Re: communicate servlet from jsp

To send the call to the servlet page:

1.In your jsp page, put

-->"aa" servlet's doPost() method
will be
called. From here you can direct the call to different places

or
2. You can include java beans in the jsp page using->

and you can call methods on this included bean
${bean.property}

You can also check:
http://www.javaworld.com/javaworld/jw-05-2003/jw-0523-calltag.html

hope this is what you are asking for..

>From: Shiva Kumar
>Reply-To: "A mailing list for discussion about Sun Microsystem's
Java
> Servlet API Technology."
>To: SERVLET-INTEREST@JAVA.SUN.COM
>Subject: communicate servlet from jsp
>Date: Wed, 16 Jun 2004 01:29:22 -0600
>
>hi all,
>
>my servlet has some methods,and it has deployed in webserver .i
want to
>call that servlet methods from a j sp page.
>plz help me how to call servlet methods from a jsp.
>the path is like this.webapps is webserver root folder.
>individual jsp files and servlets are working fine.
>
>webapps--->*.jsp
>webapps-->WEB-INF-->web.xml (description of all servlets)
>webapps-->WEB-INF-->classes-->*.class (servlet classes)
>
>
>
>thanks in advance
>shiva kumar
>

>___________________________________________________________________________
>To unsubscribe, send email to listserv@java.sun.com and include in
the body
>of the message "signoff SERVLET-INTEREST".
>
>Archives:
http://archives.java.sun.com/archives/servlet-interest.html
>Resources:
http://java.sun.com/products/servlet/external-resources.html
>LISTSERV Help: http://www.lsoft.com/manuals/user/user.html

_________________________________________________________________
Getting marri ed? Find great tips, tools and the latest trends at MSN
Life
Events. http://lifeevents.msn.com/category.aspx?cid=married

___________________________________________________________________________
To unsubscribe, send email to listserv@java.sun.com and include in
the body
of the message "signoff SERVLET-INTEREST".

Archives:
http://archives.java.sun.com/archives/servlet-interest.html
Resources:
http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
*********************************************************************
Disclaimer: The information in this e-mail and any attachments is
confidential / privileged. It is intended solely for the addressee or
addressees. If you are not the addressee indicated in this message, you may
not copy or deliver this message to anyone. In such case, you should destroy
this message and kindly notify the sender by reply email. P lease advise
immediately if you or your employer does not consent to Internet email for
messages of this kind.
*********************************************************************

___________________________________________________________________________
To unsubscribe, send email to listserv@java.sun.com and include in the body
of the message "signoff SERVLET-INTEREST".

Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html

Do you Yahoo!?
Yahoo! Mail - 50x more storage than other providers! ___________________________________________________________________________ To unsubscribe, send email to listserv@java.sun.com and include in the body of the message "signoff SERVLET-INTEREST".

Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html

Re: communicate servlet from jsp

shiv juluru

2004-06-25