Hi I think i got the last question wrong. I read somewhere that fsp:forward can ONLY forward to a URL on the local server (or within the same context ?) while this is not so with sendRedirect()? Isn't this a big limitation then ? sree bk
I guess it could be looked at as limitation, but with <jsp:forward> you can also send parameters to the next page. Sure you can do it using: res.sendRedirect("www.website.com?var1=33");, but then you will see what you've sent once the redirected page is loaded, with jsp:forward I don't think you will.
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From http://java.oreilly.com/news/jsptips_1100.html (Top Ten JSP Tips) 4.Choosing Between Forward and Redirect If you want to pass the control from one page to another, you can either forward to the other page, as described above, or redirect to the new page (using the sendRedirect() method of the implicit response object). There's an important difference between a forward and a redirect. When you forward, the target page is invoked by the JSP container through an internal method call; the new page continues to process the same request and the browser is not aware of the fact that more than one page is involved. A redirect, on the other hand, means that the first page tells the browser to make a new request to the target page. The URL shown in the browser therefore changes to the URL of the new page when you redirect, but stays unchanged when you use forward. A redirect is slower than a forward because the browser has to make a new request. Another difference is that request scope objects are no longer available after a redirect because it results in a new request. If you need to pass data to the page you redirect to, you have to use a query string and pass them as request parameters (or save the data as session or application scope objects). So how do you decide if you should use forward or redirect? I look at it like this: Forwarding is always faster, so that's the first choice. But since the URL in the browser refers to the start page even after the forward, I ask myself what happens if the user reloads the page (or just resizes the window; this often reloads the page automatically). If the start page is a page that updates some information, such as adding an item to the shopping cart or inserting information in a database, I don't want it to be invoked again on a reload. To show the result of the processing, I therefore redirect to a page with a confirmation message, instead of using forward.
Tony Alicea Senior Java Web Application Developer, SCPJ2, SCWCD
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