Yes, the 3 16 snack line and the 320 snack line have been extended to Hongqiao airport.
Both midnight snack lines are fine. Get off at the Bund on Yan 'an Road, walk to the Bund on Nanjing East Road, take the No.307 snack line (direction of Wujiaochang) and get off along siping road to see where you are.