retrieving parameter stored in req.getParameter()

[Santhosh Puttu]

Hi, Good Afternoon,
I need to pass page numbers from jsp to action class.
I need to display some finite values in first page, then some in second page, ie page wise I need to display information.

In my jsp:

   
<tr align="center" valign="top">
    <td>	   
                  <html:link action="/User.do?method=searchStudent&page=1"> 1 </html:link>
                  <html:link action="/User.do?method=searchStudent&page=2"> 2 </html:link>          
    </td>
  </tr> 
 

In my Action class:

   
public ActionForward searchStudent(ActionMapping map, ActionForm form,
			HttpServletRequest req, HttpServletResponse res) throws Exception
	{
		System.out.println("page no:"+ req.getParameter("page"));      // here output is showing 1 as expected
		System.out.println("page no:"+ req.getParameter("page"));
		System.out.println("page no:"+ req.getParameter("page"));
		int pageNo=new Integer(req.getParameter("page"));                // null pointer exception in this line
		System.out.println("page no after Conversion:"+ req.getParameter("page"));     
		System.out.println("page no after Conversion:"+ req.getParameter("page"));
                return map.findForward("searchUser");
	}

 

How to retrieve the value stored in request.getParameter();

[Santhosh Puttu]

I think I was wrong in other steps.
I will check that.