SessionUtils

 import com.diyfintech.constant.Constant.SuperAdmin;
 import com.diyfintech.pojo.SysUser;
 import org.apache.log4j.Logger;

 import javax.servlet.http.HttpServletRequest;
 import java.util.List;
 import java.util.Map;

 /**
  *
  * Session 工具类
  *
  */
 public final class SessionUtils {

     protected static final Logger logger = Logger.getLogger(SessionUtils.class);

     private static final String SESSION_USER = "session_user";

     private static final String SESSION_VALIDATECODE = "session_validatecode";//验证码

     private static final String SESSION_ACCESS_URLS = "session_access_urls"; //系统能够访问的URL

     private static final String SESSION_MENUBTN_MAP = "session_menubtn_map"; //系统菜单按钮

     /**
       * 设置session的值
       * @param request
       * @param key
       * @param value
       */
      public static void setAttr(HttpServletRequest request,String key,Object value){
          request.getSession(true).setAttribute(key, value);
      }

      /**
       * 获取session的值
       * @param request
       * @param key
       */
      public static Object getAttr(HttpServletRequest request,String key){
          return request.getSession(true).getAttribute(key);
      }

      /**
       * 删除Session值
       * @param request
       * @param key
       */
      public static void removeAttr(HttpServletRequest request,String key){
          request.getSession(true).removeAttribute(key);
      }

      /**
       * 设置用户信息 到session
       * @param request
       * @param user
       */
      public static void setUser(HttpServletRequest request,SysUser user){
          request.getSession(true).setAttribute(SESSION_USER, user);
      }

      /**
       * 从session中获取用户信息
       * @param request
       * @return SysUser
       */
      public static SysUser getUser(HttpServletRequest request){
         return (SysUser)request.getSession(true).getAttribute(SESSION_USER);
      }

      /**
       * 从session中获取用户信息
       * @param request
       * @return SysUser
       */
      public static void removeUser(HttpServletRequest request){
         removeAttr(request, SESSION_USER);
      }

      /**
       * 设置验证码 到session
       * @param request
       * @param validateCode
       */
      public static void setValidateCode(HttpServletRequest request,String validateCode){
          request.getSession(true).setAttribute(SESSION_VALIDATECODE, validateCode);
      }

      /**
       * 从session中获取验证码
       * @param request
       * @return SysUser
       */
      public static String getValidateCode(HttpServletRequest request){
         return (String)request.getSession(true).getAttribute(SESSION_VALIDATECODE);
      }

      /**
       * 从session中获删除验证码
       * @param request
       * @return SysUser
       */
      public static void removeValidateCode(HttpServletRequest request){
         removeAttr(request, SESSION_VALIDATECODE);
      }

      /**
       * 判断当前登录用户是否超级管理员
       * @param request
       * @return
       */
      public static boolean isAdmin(HttpServletRequest request){ //判断登录用户是否超级管理员
          SysUser user =  getUser(request);
          if(user == null  || !SuperAdmin.YES.key.endsWith(user.getIsSuperAdmin())){
              return false;
          }
          return true;
      }

      /**
      *设置当前用户可以访问的urls
      * @param request
      * @param accessUrls
      */
     public static void setAccessUrl(HttpServletRequest request,List<String> accessUrls){
          setAttr(request, SESSION_ACCESS_URLS, accessUrls);
      }

      /**
       * 判断URL是否可访问
       * @param request
       * @return
       */
      public static boolean isAccessUrl(HttpServletRequest request,String url){
          List<String> accessUrls = (List)getAttr(request, SESSION_ACCESS_URLS);
          if(accessUrls == null ||accessUrls.isEmpty() || !accessUrls.contains(url)){
              return false;
          }
          return true;
      }

      /**
       * 设置菜单按钮
       * @param request
       * @param btnMap
       */
      public static void setMemuBtnMap(HttpServletRequest request,Map<String,Object> btnMap){ //判断登录用户是否超级管理员
          setAttr(request, SESSION_MENUBTN_MAP, btnMap);
      }

      /**
       * 获取菜单按钮
       * @param request
       * @param menuUri
       */
      public static List<String> getMemuBtnListVal(HttpServletRequest request,String menuUri){
          Map btnMap  = (Map)getAttr(request, SESSION_MENUBTN_MAP);
          if(btnMap == null || btnMap.isEmpty()){
              return null;
          }
          return (List<String>)btnMap.get(menuUri);
      }

 }