``` package com.sn511.demo.interceptor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class LoginInterceptor implements HandlerInterceptor { Logger logger = LoggerFactory.getLogger(this.getClass()); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { logger.debug("pre ......"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { logger.debug("post...."); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { logger.debug("after...."); } } ```