Re-understanding redirects, using redirects to prevent users from repeating the form (also on SPRINGMVC redirection)

I use the SPRINGMVC framework for some time, but have been not clear when should be forwarded, when should be redirected. There may be too many things to forward so that you forget to redirect.

When a user submits a POST request, refreshing the page causes the data to be submitted again, which is often said to repeat the submission. On-line access to the relevant information, found that the use of redirection can effectively prevent the duplication of data submission.

Redirect that is, after the client sends a request to the server, the service side requests the request in accordance with the code specified in the program request again, in the development of SPRINGMVC, the return of a redirected view only need to precede the view name with "Redirect:" prefix, Of course you must provide the redirected view access path so that the request path cannot be found after redirection.

Re-understanding redirects, using redirects to prevent users from repeating the form (also on SPRINGMVC redirection)