@Override
 public int addSale(LiveDetailSale sale) {
   // 添加购买信息
   dbConn = JdbcUtil.connSqlServer();
   try {
     sta = dbConn.createStatement();
     return sta.executeUpdate(
         "INSERT INTO JCP_LiveDetailSale (FK_UserId,FK_TearchId,OrderCode,FK_LiveDetailId,InsertDate) VALUES ("
             + sale.getUserId()
             + ","
             + sale.getTeacherId()
             + ",'"
             + sale.getOrderCode()
             + "',"
             + sale.getLiveDetailId()
             + ",'"
             + sale.getInsertDate()
             + "')");
   } catch (SQLException e) {
     e.printStackTrace();
   } finally {
     try {
       JdbcUtil.closeConn(sta, dbConn, res);
     } catch (SQLException e) {
       e.printStackTrace();
     }
   }
   return 0;
 }