package com.hope.interceptor;import org.springframework.lang.Nullable;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 * * @author newcityman * @date 2019/11/28 - 23:57 */public class MyInterceptor1 implements HandlerInterceptor { /** * 拦截器前处理方法 * * @param request * @param response * @param handler * @return * @throws Exception */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("MyInterceptor执行了....前处理方法");// request.getRequestDispatcher("/WEB-INF/pages/error.jsp").forward(request,response); return true; } /** * 拦截器后处理方法 * @param request * @param response * @param handler * @param modelAndView * @throws Exception */ public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception { System.out.println("MyInterceptor执行了....后处理方法"); request.getRequestDispatcher("/WEB-INF/pages/error.jsp").forward(request,response); } /** * success.jsp页面执行后，该方法会执行 * @param request * @param response * @param handler * @param ex * @throws Exception */ public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception { System.out.println("MyInterceptor执行了....最后"); }}
<?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"> <!--指定spring扫描的包--> <context:component-scan base-package="com.hope"></context:component-scan> <!--视图解析器--> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 配置文件解析器对象,处理文件上传处理--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="10485760"></property> </bean> <!-- 指定前端控制器哪些资源不拦截--> <!--前端控制器，哪些静态资源不拦截--> <mvc:resources location="/css/" mapping="/css/**"/> <mvc:resources location="/images/" mapping="/images/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <!--配置拦截器--> <mvc:interceptors> <!--配置拦截器--> <mvc:interceptor> <!--要拦截的具体的方法--> <mvc:mapping path="/user/*"/> <!--不要拦截的具体方法--> <!--<mvc:exclude-mapping path=""/>--> <!-- 配置拦截器对象--> <bean class="com.hope.interceptor.MyInterceptor1"></bean> </mvc:interceptor> </mvc:interceptors> <!--开启springmvc框架注解的支持,包含开启处理器映射器和处理器适配器--> <mvc:annotation-driven /></beans>
