springMVC-笔记010-拦截器

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编写一个拦截器：

package com.mvc.interceptor;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;public class TestInterceptor implements HandlerInterceptor {@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object obj) throws Exception {// 预处理System.out.println("预处理执行...");return false;}@Overridepublic void postHandle(HttpServletRequest request, HttpServletResponse response, Object obj, ModelAndView mav)throws Exception {// 返回处理System.out.println("返回处理执行...");}@Overridepublic void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object obj, Exception e)throws Exception {// 后处理System.out.println("后处理执行...");}}

配置到springmvc配置文件：

<!-- 拦截器 --><mvc:interceptors><mvc:interceptor><mvc:mapping path="/**" /><bean class="com.mvc.interceptor.TestInterceptor" /></mvc:interceptor></mvc:interceptors>

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