如何查询抢占式实例近 30 天内的历史价格

https://ecs.aliyuncs.com/?Action=DescribeSpotHistory

&RegionId=cn-hangzhou

&ZoneId=cn-hanghzhou-c

&NetworkType=vpc

&InstanceType=ecs.t1.xsmall

&IoOptimized=none

&UtcStartTime=2017-08-22T08:45:08Z...

&<公共请求参数>

<DescribeSpotPriceHistoryResponse>

    <RequestId>xxxxxxxxxxxxxx</RequestId>

    <NextOffset>1000</NextOffset>

    <SpotPrices>

        <SpotPriceType>

            <IoOptimized>none</IoOptimized>

            <OriginPrice>0.028</OriginPrice>

            <NetworkType>classic</NetworkType>

            <Timestamp>2017-09-18T11:00:00Z</Timestamp>

            <ZoneId>cn-hangzhou-c</ZoneId>

            <SpotPrice>0.006</SpotPrice>

            <InstanceType>ecs.t1.xsmall</InstanceType>

        </SpotPriceType>

        <SpotPriceType>

            <IoOptimized>none</IoOptimized>

            <OriginPrice>0.028</OriginPrice>

            <NetworkType>classic</NetworkType>

            <Timestamp>2017-09-18T12:00:00Z</Timestamp>

            <ZoneId>cn-hangzhou-c</ZoneId>

            <SpotPrice>0.006</SpotPrice>

            <InstanceType>ecs.t1.xsmall</InstanceType>

    </SpotPriceType>

</SpotPrices>

</DescribeSpotPriceHistoryResponse>