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 ;
		     }
	      }
       }

}