Adding request Interceptor in Spring

In web applications/projects, we came across different scenarios where we need to check the request first before serving it or passing it to our main system or code.

For example in a MVC project we need to check every request that if it contains particular key/switch. That key/switch can inform us prior to processing that request to move it to particular system or portion e.g client side or admin side.

We came across the same case in which we need to verify the request first before passing it or mapping it to any controller class. For that purpose spring provides us with different listeners and hookups which can be used to overcome the cases like this.

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