问题
Here is my request: https://maps.googleapis.com/maps/api/directions/json?origin=49.276951,-123.128559&destination=49.277874,-122.912404&mode=transit&sensor=false The result is: { "routes" : [], "status" : "INVALID_REQUEST" }
It worked before, but it does not work when i used it today. why is that? Note: it works fine when i change it to mode=walking
回答1:
https://maps.googleapis.com/maps/api/directions/json?origin=49.276951,-123.128559&destination=49.261566,-123.138399&mode=transit&sensor=false&departure_time=1346197500
The above request works. We can solve this problem by adding departure_time parameter since Google may updated the direction api and set departure time as a mandatory parameter.
回答2:
The problem here is probably that there is no public transit that can take you from your origin to your destination, thus the invalid request..
来源：https://stackoverflow.com/questions/11656445/google-direction-api-request-invalid-in-ios5