Srinivas M wrote:
> Hi All,
>
> Could any body please explain the difference between the functions
> sendRedirect() and callPage().
> Both of these functions are used to redirect the browser request from
> the servlet to JSP.
>
> Thanks,
> Srinivas
First, a clarification -- the callPage() function from JSP 0.91 was replaced
by <jsp:forward> in JSP 1.0. In 1.0, there is also a <jsp:include> function
that essentially does server-side-includes of other JSP pages.
The key difference is that sendRedirect() sends a redirection back to the
client browser, saying "go here instead". A <jsp:forward> happens on the
server side, without the extra round trip, so it will be faster.
A second difference is that, with <jsp:forward>, you can pass attributes
specific to this request along with it by using beans with a "request"
lifetime. If you use sendRedirect, you have to store such things in a
session, or use some other sort of storage mechanism, instead.
Craig McClanahan
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