1：配置（applicationContext.xml中）：

1     <!-- 拦截器配置   -->
2     <mvc:interceptors>
3         <mvc:interceptor>
4             <!-- 包括这个请求下面的所有的请求           -->
5             <mvc:mapping path="/**"/>
6             <bean class="com.lieyan.config.MyInterceptor"/>
7         </mvc:interceptor>
8     </mvc:interceptors>

 

2：实现例子（controller中的方法里）：

 1 package com.lieyan.config;
 2 
 3 import org.springframework.web.servlet.HandlerInterceptor;
 4 import org.springframework.web.servlet.ModelAndView;
 5 
 6 import javax.servlet.http.HttpServletRequest;
 7 import javax.servlet.http.HttpServletResponse;
 8 
 9 public class MyInterceptor implements HandlerInterceptor {
10 
11     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
12 
13         System.out.println("处理前============================");
14 
15         return true;
16     }
17 
18     public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
19         System.out.println("处理后============================");
20     }
21 
22     public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
23         System.out.println("清理============================");
24     }
25 }