Spring Cookbook

Executing some code before and after controllers using interceptors

In this recipe, you'll learn how, with interceptors, we can execute some code across all controllers at different moments of a request workflow with the preHandle(), postHandle(), and afterCompletion() hooks:

Interceptors are used for authentication, logging, and profiling (among others).

How to do it…

Here are the steps to create and register an interceptor:

1. Create a class extending HandlerInterceptorAdapter:

   public class PerformanceInterceptor extends HandlerInterceptorAdapter {

2. Override the methods you want to use:

   @Override
   public boolean preHandle(HttpServletRequest request, HttpServletResponse ...