SpringMVC拦截器（包括自定以拦截器--实现HandlerInterceptorAdapter）（资源和权限管理）

一，springmvc的配置

 <!-- 访问拦截  -->
       <mvc:interceptors>
         <mvc:interceptor>
             <mvc:mapping path="/**/**"/>
             <bean class="com.fh.interceptor.LoginHandlerInterceptor"/>
         </mvc:interceptor>
     </mvc:interceptors>

二，拦截类

 public class LoginHandlerInterceptor extends HandlerInterceptorAdapter{
 
     @Override
     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
         // TODO Auto-generated method stub
         String path = request.getServletPath();
         if(path.matches(Const.NO_INTERCEPTOR_PATH)){
             return true;
         }else{
             User user = (User)Jurisdiction.getSession().getAttribute(Const.SESSION_USER);
             if(user!=null){
                 path = path.substring(1, path.length());
                 boolean b = Jurisdiction.hasJurisdiction(path); //访问权限校验
                 if(!b){
                     response.sendRedirect(request.getContextPath() + Const.LOGIN);
                 }
                 return b;
             }else{
                 //登陆过滤
                 response.sendRedirect(request.getContextPath() + Const.LOGIN);
                 return false;
             }
         }
     }
 
 }

三，静态类

     public static final String NO_INTERCEPTOR_PATH = ".*/((login)|(logout)|(code)|(app)|(weixin)|(static)|(main)|(websocket)).*";    //不对匹配该值的访问路径拦截（正则）

四，解释

只要进入Controller之前都会进入这个拦截器