springmvc中配置拦截器

2023-09-16

springmvc.xml

 <!--配置拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <!--配置需要拦截的请求的请求路径-->
            <mvc:mapping path="/**"/>
            <!--配置需要排除拦截的请求的请求路径-->
            <mvc:exclude-mapping path="/abc"/>
            <!--配置拦截器-->
            <ref bean="firstInterceptor"/>
        </mvc:interceptor>
    </mvc:interceptors>

 FirstInterceptor

package com.hh.interceptor;

import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

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

/**
 * @author hh
 * @version 1.0
 * @DATE 2023-09-16 10:35:31
 */
@Component
public class FirstInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("preHandle");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("postHandle");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("afterCompletion = ");
    }
}