<!DOCTYPE web-app PUBLIC

 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>

  <display-name>Archetype Created Web Application</display-name>

  <!--配置前端控制器，让前端控制器去加载resources包下的springmvc.xml配置文件-->

  <servlet>

    <servlet-name>dispatcherServlet</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!--全局的初始化参数-->

    <init-param>

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:springmvc.xml</param-value>

    </init-param>

  </servlet>

  <servlet-mapping>

    <servlet-name>dispatcherServlet</servlet-name>

    <url-pattern>/</url-pattern>

  </servlet-mapping>

  <!--配置解决中文乱码的过滤器-->

  <filter>

    <filter-name>characterEncodingFilter</filter-name>

    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

    <init-param>

      <param-name>encoding</param-name>

      <param-value>UTF-8</param-value>

    </init-param>

  </filter>

  <filter-mapping>

    <filter-name>characterEncodingFilter</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

</web-app>

package lucky.controller;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

@Controller

@RequestMapping(path = "/user")

public class UserController {

    @RequestMapping(path = "/testInterceptor")

    public String testInterceptor(){

        System.out.println("testInterceptor执行了");

        return "success";

    }

}

package lucky.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

 * 自定义拦截器

 */

public class MyInterceptor1 implements HandlerInterceptor {

    /**

     * 预处理：该方法controller包下控制器类方法之前执行

     * @return  true 表示放行，执行下一个拦截器，如果没有下一个拦截器，则执行控制器类中方法

     *          false 表示不放行

     */

    @Override

    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        System.out.println("MyInterceptor1 执行了---前");

        return true;

    }

    /**

     * 后处理：该方法在controller包下控制器类方法之后执行，但在success.jsp执行之前

     */

    @Override

    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

        System.out.println("MyInterceptor1 执行了---后");

    }

}

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xsi:schemaLocation="

        http://www.springframework.org/schema/beans

        http://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-mvc.xsd

        http://www.springframework.org/schema/context

        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 开启注解扫描 -->

    <context:component-scan base-package="lucky"/>

    <!-- 视图解析器对象 -->

    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <!--配置控制器方法中return返回的字符串对应的同名文件所在目录-->

        <property name="prefix" value="/WEB-INF/pages/"/>

        <!--配置文件的后缀名-->

        <property name="suffix" value=".jsp"/>

    </bean>

    <!-- 开启SpringMVC框架注解的支持 -->

    <mvc:annotation-driven/>

    <!--配置拦截器-->

    <mvc:interceptors>

        <mvc:interceptor>

            <!--要拦截的方法-->

            <mvc:mapping path="/user/*"/>

            <!--配置拦截器对象-->

            <bean class="lucky.interceptor.MyInterceptor1"></bean>

        </mvc:interceptor>

    </mvc:interceptors>

</beans>