你好,想问一下,为什么用exchange.IO("api", “GET”, “/api/v5/market/history-candles”, “instId=BTC-USDT&before=1639467042705&after=1639467642705”);查不出数据,而使用HttpQuery(“https://www.okex.com/api/v5/market/history-candles?instId=BTC-USDT&before=1639467042705&after=1639467642705”)却可以查出数据
小草 K线数据是公开接口,用HttpQuery访问