/**
   * 删除gift_user表中的数据
   *
   * @param gift_user_id
   * @param param
   */
  public static void delGiftUserColumn(String gift_user_id) {
    String sql =
        "delete from xuanniu_trade.gift_user where gift_user_id in('" + gift_user_id + "')";
    int delColumn = xdb.delRow("xuanniu_trade", sql);
    // System.out.println("delColumn: "+delColumn);

  }
 /**
  * gift_user表中、查找记录、
  *
  * @param gift_user_id
  * @param param
  * @return
  */
 public static String getGu2param(String gift_user_id, String param) {
   String sql =
       "select * from xuanniu_trade.gift_user where gift_user_id in('" + gift_user_id + "')";
   String paramStr = null;
   JSONObject jsob = xdb.searchColumn("xuanniu_trade", sql);
   if (jsob.toString().equals("{}")) {
     // System.out.println("jsob is: null");
     paramStr = null;
   } else {
     paramStr = jsob.getString(param);
   }
   return paramStr;
 }
 /**
  * xuanniu_security.recommend中插入推荐数据
  *
  * @param uid
  * @param recommend_type
  * @param source_id
  * @param activity_id
  */
 public static void insertRecommend(
     String uid, String recommend_type, String source_id, String activity_id) {
   String sql =
       "insert into xuanniu_security.recommend (uid,recommend_type,source_id,create_time,activity_id) value ('"
           + uid
           + "','"
           + recommend_type
           + "','"
           + source_id
           + "',now(),'"
           + activity_id
           + "')";
   xdb.insert("xuanniu_trade", sql);
 }
 /**
  * 删除recommend表中的推荐人
  *
  * @param source_id
  */
 public static void delRecoment(String source_id) {
   String sql = "delete from xuanniu_security.recommend where source_id in('" + source_id + "')";
   xdb.delRow("xuanniu_trade", sql);
 }