Spring-MVC拦截器

   

1. <!-- 此配置拦截一切请求-->
2.     <mvc:interceptors>
3.         <bean id="myInterceptor" class="cn.tri.interceptor.MyInterceptor"></bean>
4.     </mvc:interceptors>

      

5. <!-- 此配置拦截所配置路径请求à

      

     <!-- <mvc:interceptors>
           <mvc:interceptor>
               <mvc:mapping path="/aaa"/>  拦截path  
               <mvc:exclude-mapping path="testUpload"/> 不拦截path
               <bean id="myInterceptor" class="cn.tri.interceptor.MyInterceptor"></bean>
           </mvc:interceptor>
       </mvc:interceptors> -->

   

   

•     //实现handlerInterceptor 接口
• public class MyInterceptor implements HandlerInterceptor{
•     
•         @Override
•         public boolean preHandle(HttpServletRequest request,
•                 HttpServletResponse response, Object handler) throws Exception {
•             System.out.println("prehandle拦截请求");
•             return true;
• //true 全部通过   false全部拦截
• }
•     
•         @Override
•         public void postHandle(HttpServletRequest request,
•                 HttpServletResponse response, Object handler,
•                 ModelAndView modelAndView) throws Exception {
•             System.out.println("postHandle");
•         }
•     
•         @Override
•         public void afterCompletion(HttpServletRequest request,
•                 HttpServletResponse response, Object handler, Exception ex)
•                 throws Exception {
•                 System.out.println("afterCompletion 渲染请求 ");        }
•     
•     }