问题
I tried to use both http and https as suggested by read.csv("http://ichart.finance.yahoo.com/table.csv?s=SPY") Not Working. But none of both are working.
回答1:
The service is discontinued, read https://forums.yahoo.net/t5/Yahoo-Finance-help/Is-Yahoo-Finance-API-broken/td-p/250503
The Yahoo finance is now downloading historical data from https://query1.finance.yahoo.com/v7/finance/download/ using authorization token.
来源：https://stackoverflow.com/questions/44361361/the-ichart-finance-yahoo-com-table-csv-no-longer-working