from Zhejiang Gongshang university to Hangzhou (Xiasha) International airport

Oh, you must refer to Xiasha Campus of this university, right?
You can take a taxi to Xisha Xincheng Bus Station first. The cab fare is CNY11-12 in the day time. After arriving, there are many direct shuttle buses that can take you to the airport. The bus schedules are 07:15, 09:10, 10:30, 12:10, 13:40, 15:10, 16:30 and 18:15. It takes around 70 mins on the way. The ticket fare is CNY 20 per person.