In all our previous chapters, we have only seen how to map a request to the Controller's method; once the request reaches the Controller method, we execute some logic and return a logical View name, which can be used by the view resolver to resolve Views, but what if we want to execute some logic before actual request processing happens? Similarly, what if we want to execute some other instruction before dispatching the response?
Spring MVC interceptor intercepts the actual request and response. Interceptors are a special web programming technique, where we can execute a certain piece of logic before or after a web request is processed. In this chapter, we are going to learn more about interceptors. After finishing this chapter, you will know:
How to configure an interceptor
How to add internalization support
Data auditing using an interceptor
Conditional redirecting using an interceptor