/**
  * 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);
 }