package com.qiudeqing.web.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by qiudeqing on 16/12/18.
 */
public class HelloInterceptor implements HandlerInterceptor {


    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {

        System.out.println("HelloInterceptor.preHandle()");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
        System.out.println("HelloInterceptor.postHandle");
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        System.out.println("afterCompletion.afterCompletion()");
    }
}

<!-- 拦截器 -->
<mvc:interceptors>
    <mvc:interceptor>
        <mvc:mapping path="/index"/>
        <bean class="com.qiudeqing.web.interceptor.HelloInterceptor"></bean>
    </mvc:interceptor>
</mvc:interceptors>