web.xml文件
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<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"><!-- 配置springMvc中央处理器--> <servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><!-- 初始化的时候配置加载springmvc的配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet><!-- 3、修改web.xml中的请求路径地址方式--> <servlet-mapping> <servlet-name>springMVC</servlet-name><!-- 3、修改web.xml中的请求路径地址方式--> <url-pattern>/</url-pattern><!-- <url-pattern>*.do</url-pattern>--> </servlet-mapping><!-- 1、将css文件使用默认处理方式进行处理，不再交由中央控制器处理， 设置路径的更高匹配优先级 --><!-- <servlet-mapping>--><!-- <servlet-name>default</servlet-name>--><!-- <url-pattern>*.css</url-pattern>--><!-- <url-pattern>*.js</url-pattern>--><!-- <url-pattern>*.jpg</url-pattern>--><!-- <url-pattern>*.png</url-pattern>--><!-- <url-pattern>*.html</url-pattern>--><!-- </servlet-mapping>--></web-app> |
springMVC配置文件：
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<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!--自动扫描包--> <!-- 开启ioc 注解事务支持--> <context:component-scan base-package="cn"></context:component-scan> <!--开启spiring mvc注解支持--> <mvc:annotation-driven></mvc:annotation-driven> <!--配置spring 中的视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="resolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> <mvc:interceptors> <bean id="interceptor1" class="cn.hp.interceptor.TestInterceptor1"></bean> <mvc:interceptor> <mvc:mapping path="/**"/> <bean id="interceptor1" class="cn.hp.interceptor.TestInterceptor1"></bean> </mvc:interceptor> <mvc:interceptor> <mvc:mapping path="/test1.do"/> <mvc:exclude-mapping path="/test2.do"/> <bean id="interceptor2" class="cn.hp.interceptor.TestInterceptor2"></bean> </mvc:interceptor> </beans> |
controller类：
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package cn.hp.action;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import javax.servlet.http.HttpSession;@Controllerpublic class UserAction { @RequestMapping("/test1.do") public String test01(){ System.out.println("正在执行test1这个业务逻辑"); return "index"; } @RequestMapping("/test2.do") public String test02(){ System.out.println("正在执行test2这个业务逻辑"); return "index"; }} |
第一个拦截器配置：
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package cn.hp.interceptor;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class TestInterceptor1 implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("第一个拦截器，执行业务逻辑之前执行此方法"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { System.out.println("第一个拦截器，执行业务逻辑之后，视图渲染之前执行此方法"); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { System.out.println("第一个拦截器，执行视图渲染之后执行此方法"); }} |
第二个拦截器：
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package cn.hp.interceptor;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class TestInterceptor2 implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("第二个拦截器，执行业务逻辑之前执行此方法"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { System.out.println("第二个拦截器，执行业务逻辑之后，视图渲染之前执行此方法"); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { System.out.println("第二个拦截器，执行视图渲染之后执行此方法"); }} |
总结
本篇文章就到这里了，希望能给你带来帮助，也希望您能够多多关注服务器之家的更多内容！
原文链接：https://blog.csdn.net/best_p1/article/details/118637785
