期货主力、连续合约日行情

获取国内期货日行情信息（底层数据与期货日行情一致，区别是此接口可从主力连续合约角度获取连续行情），包含昨收盘、昨结算、开盘价、最高价、最低价、收盘价、结算价、成交量、成交金额、持仓量、主力合约标记、连续合约标记等。 其中主力合约按持仓量计算，完整的主力连续标记可从getMktFutPre获取。中金所结算价的更新时间为16:20，上期所无成交合约的结算价有可能在16:00左右修正。

This dataset provides domestic futures daily market data. The underlying data is consistent with standard futures daily market data, with the key distinction that this interface enables retrieval of continuous market quotes from the perspective of the main continuous contract. The dataset includes the following fields: previous closing price, previous settlement price, opening price, daily highest price, daily lowest price, closing price, settlement price, trading volume, trading turnover, open interest, main contract identifier, and continuous contract identifier. The main contract is selected based on open interest. Complete main continuous contract identifiers can be obtained via the getMktFutPre interface. For contracts traded on the China Financial Futures Exchange (CFFEX), settlement prices are updated at 16:20. For the Shanghai Futures Exchange (SHFE), settlement prices of contracts with no trading activity may be revised around 16:00.