content: package com.jiron.common.core.context;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  import com.alibaba.ttl.TransmittableThreadLocal;
  import com.jiron.common.core.utils.StringUtils;
  import com.jiron.common.core.constant.SecurityConstants;
  import com.jiron.common.core.text.Convert;
  
  /**
   * 获取当前线程变量中的 用户id、用户名称、Token等信息
   * 注意： 必须在网关通过请求头的方法传入，同时在HeaderInterceptor拦截器设置值。 否则这里无法获取
   *
   * @author ruoyi
   */
  public class SecurityContextHolder
  {
      private static final TransmittableThreadLocal<Map<String, Object>> THREAD_LOCAL = new TransmittableThreadLocal<>();
  
      public static void set(String key, Object value)
      {
          Map<String, Object> map = getLocalMap();
          map.put(key, value == null ? StringUtils.EMPTY : value);
      }
  
      public static String get(String key)
      {
          Map<String, Object> map = getLocalMap();
          return Convert.toStr(map.getOrDefault(key, StringUtils.EMPTY));
      }
  
      public static <T> T get(String key, Class<T> clazz)
      {
          Map<String, Object> map = getLocalMap();
          return StringUtils.cast(map.getOrDefault(key, null));
      }
  
      public static Map<String, Object> getLocalMap()
      {
          Map<String, Object> map = THREAD_LOCAL.get();
          if (map == null)
          {
              map = new ConcurrentHashMap<String, Object>();
              THREAD_LOCAL.set(map);
          }
          return map;
      }
  
      public static void setLocalMap(Map<String, Object> threadLocalMap)
      {
          THREAD_LOCAL.set(threadLocalMap);
      }
  
      public static Long getUserId()
      {
          return Convert.toLong(get(SecurityConstants.DETAILS_USER_ID), 0L);
      }
  
      public static void setUserId(String account)
      {
          set(SecurityConstants.DETAILS_USER_ID, account);
      }
  
      public static String getUserName()
      {
          return get(SecurityConstants.DETAILS_USERNAME);
      }
  
      public static void setUserName(String username)
      {
          set(SecurityConstants.DETAILS_USERNAME, username);
      }
  
      public static String getUserKey()
      {
          return get(SecurityConstants.USER_KEY);
      }
  
      public static void setUserKey(String userKey)
      {
          set(SecurityConstants.USER_KEY, userKey);
      }
  
      public static String getPermission()
      {
          return get(SecurityConstants.ROLE_PERMISSION);
      }
  
      public static void setPermission(String permissions)
      {
          set(SecurityConstants.ROLE_PERMISSION, permissions);
      }
  
      public static void remove()
      {
          THREAD_LOCAL.remove();
      }
  }
  