zoukankan      html  css  js  c++  java
  • springboot学习笔记2---配置拦截器:

    package com.zs.springboot.interceptor;
    
    import org.springframework.boot.SpringBootConfiguration;
    import org.springframework.web.servlet.HandlerInterceptor;
    import org.springframework.web.servlet.ModelAndView;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    /**
     * 创建一个拦截器,在ssm框架中,创建拦截器时需要在xml做如下配置
     *      <mvc:interceptors>
     *         <mvc:interceptor>
     *             <mvc:mapping path="/**"/>
     *             <mvc:exclude-mapping path="/login"/>
     *             <bean class=""/>
     *         </mvc:interceptor>
     *     </mvc:interceptors>
     *     上面的配置如果使用springboot该如何使用java类配置?
     *     1.创建一个配置类,继承mvc配置适配器,表示这是一个mvc配置文件
     */
    @SpringBootConfiguration
    public class MvcInterceptorConfig extends WebMvcConfigurerAdapter {
    
        /**
         * 实现添加拦截器的方法
         * @param registry:拦截器注册器,相当于<mvc:interceptors>标签
         */
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            /**
             * 实现注册方法添加拦截器:相当于
             *  <mvc:interceptor>
             *      <mvc:mapping path="/**"/>
             *      <mvc:exclude-mapping path="/login"/>
             *      <bean class=""/>
             *  </mvc:interceptor>
            * */
            registry.addInterceptor(loginIngerceptor()).addPathPatterns("/**").excludePathPatterns("/login");
        }
    
        private HandlerInterceptor loginIngerceptor() {
            HandlerInterceptor handlerInterceptor = new HandlerInterceptor() {
                @Override
                public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
                    System.out.println("我是拦截器,我被访问了");
                    return true;
                }
    
                @Override
                public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
    
                }
    
                @Override
                public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
    
                }
            };
            return handlerInterceptor;
        }
    }
  • 相关阅读:
    本地启动项目后cookie跨域获取不到的处理方式
    相对URL:协议名跨域的一种处理方式
    window.open方法被浏览器拦截的处理方式
    高维前缀和
    比较函数大小
    链式前向星
    并查集
    Kruskal算法
    读书笔记 UltraGrid(4)
    读书笔记 UltraGrid(12)
  • 原文地址:https://www.cnblogs.com/Zs-book1/p/11372885.html
Copyright © 2011-2022 走看看