SUH wrote:
> Hi, all. Is there any way to check a request if it is coming from
> browser's cache ? The problem is :When users refresh web pages,
> browsers repost data to my servlet.My servlet should not do anything
> if the request is sent by refreshing web pages. Thanks in
> advance. Chang
Your servlet had better do something -- otherwise the user is going to
end up with a blank page and an error message like "The document
contained no data" when the reload request returns. Use one of the
techniques suggested in other responses, such as a transaction ID, that
your servlet can use to detect whether this is a repeat or not.
Craig McClanahan
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