Pass variables from servlet to jsp

It will fail to work when:

1. You are redirecting the response to a new request by response.sendRedirect("page.jsp"). The newly created request object will of course not contain the attributes anymore and they will not be accessible in the redirected JSP. You need to forward rather than redirect. E.g.

   request.setAttribute("name", "value");
   request.getRequestDispatcher("page.jsp").forward(request, response);
   

2. You are accessing it the wrong way or using the wrong name. Assuming that you have set it using the name "name", then you should be able to access it in the forwarded JSP page as follows:

   ${name}
   

Simple way which i found is,

In servlet:

You can set the value and forward it to JSP like below

req.setAttribute("myname",login);
req.getRequestDispatcher("welcome.jsp").forward(req, resp); 

In Welcome.jsp you can get the values by

.<%String name = (String)request.getAttribute("myname"); %>
<%= name%>

(or) directly u can call

<%= request.getAttribute("myname") %>.

Use

request.setAttribute("attributeName");

and then

getServletContext().getRequestDispatcher("/file.jsp").forward();

Then it will be accessible in the JSP.

As a side note - in your jsp avoid using java code. Use JSTL.

Besides using an attribute to pass information from a servlet to a JSP page, one can also pass a parameter. That is done simply by redirecting to a URL that specifies the JSP page in question, and adding the normal parameter-passing-through-the-URL mechanism.

An example. The relevant part of the servlet code:

protected void doGet( HttpServletRequest request, HttpServletResponse response )
throws ServletException, IOException
{
    response.setContentType( "text/html" );
    // processing the request not shown...
    //
    // here we decide to send the value "bar" in parameter
    // "foo" to the JSP page example.jsp:
    response.sendRedirect( "example.jsp?foo=bar" );
}

And the relevant part of JSP page example.jsp:

<%
    String fooParameter = request.getParameter( "foo" );
    if ( fooParameter == null )
    {
%>
    <p>No parameter foo given to this page.</p>
<%
    }
    else
    {
%>
    <p>The value of parameter foo is <%= fooParameter.toString() %>.</p>
<%
    }
%>