Use link to forward Session entries instead of Request Dispatcher

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francan00@yahoo.com - 13 Sep 2007 01:57 GMT

I have objects that I pass from a Servlet to JSP using
RequestDispatcher type. Now, I was wondering if I can do the same with
a link but not sure how I do that:

Servlet called MyServlet.java (or MyServlet in web.xml mapping):

String firstname = request.getParameter("firstname");
String lastname = request.getParameter("lastname");
String city= request.getParameter("city");
String state= request.getParameter("state");
.....
HttpSession session = request.getSession();
session.setAttribute("firstname", firstname);
session.setAttribute("lastname", lastname);
session.setAttribute("city", city);
session.setAttribute("state", state);
RequestDispatcher dispatcher = getServletContex
().getRequestDispatcher("start.jsp");
dispatcher.forward(request, response);
...

The above servlet automatically goes to the JSP and shows the
firstname,lastname, city and state values that were submitted from a
form. What is the equivalent of the RequestDispatcher where I can put
a link instead so the user can click on the link and that will take
them to the JSP with the session values:

This is not working because takes to a null error page:

...
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n" +
"<HTML>\n" +
"<HEAD><TITLE>Hello WWW</TITLE></HEAD>\n" +
"<BODY>\n" +
"<p><a href="MyServlet">Link to JSP</a></p>\n" +
"</BODY></HTML>");
.....

Please advise.

Reply to this Message

Manish Pandit - 13 Sep 2007 02:08 GMT

On Sep 12, 5:57 pm, franca...@yahoo.com wrote:

> I have objects that I pass from a Servlet to JSP using
> RequestDispatcher type. Now, I was wondering if I can do the same with
[quoted text clipped - 38 lines]
>
> Please advise.

IMO you do not need a servlet for this task. You can submit the form
directly to the JSP.

<form name="myform" action="/start.jsp">
<input type="text" name="firstname"...../>
..
..
</form>

In start.jsp, use EL to get the values

<p> First Name: ${param.firstname} </p>
<p> Last Name: ${param.lastname} </p>
..
..

-cheers,
Manish

Reply to this Message

francan00@yahoo.com - 14 Sep 2007 00:55 GMT

> On Sep 12, 5:57 pm, franca...@yahoo.com wrote:
>
[quoted text clipped - 61 lines]
>
> - Show quoted text -

Thanks, I need the Servlet as a Controller for other stuff and I dont
have EL or JSTL in my Tomcat 4.1.27. Please advise.

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Use link to forward Session entries instead of Request Dispatcher

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