如何在 go 中更改 struct XML 标签？

Question

我从 Amazon 检索到 2 段非常相似的 XML。

<?xml version="1.0"?><GetLowestPricedOffersForASINResponse xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
<GetLowestPricedOffersForASINResult MarketplaceID="A1F83G8C2ARO7P" ItemCondition="New" ASIN="0195019199" status="Success">
    <Identifier>
        <MarketplaceId>A1F83G8C2ARO7P</MarketplaceId>
        <ASIN>0195019199</ASIN>
        <ItemCondition>New</ItemCondition>
        <TimeOfOfferChange>2018-11-07T02:05:14.342Z</TimeOfOfferChange>
    </Identifier>
    <Summary>
        <TotalOfferCount>45</TotalOfferCount>
        <NumberOfOffers>
            <OfferCount condition="used" fulfillmentChannel="Merchant">14</OfferCount>
            <OfferCount condition="new" fulfillmentChannel="Amazon">1</OfferCount>
            <OfferCount condition="new" fulfillmentChannel="Merchant">30</OfferCount>
        </NumberOfOff........ etc xml continues

</GetLowestPricedOffersForASINResult>
<ResponseMetadata>
    <RequestId>fef8c86d-c563-4373-81c9-78dcf691283c</RequestId>
</ResponseMetadata>
</GetLowestPricedOffersForASINResponse>

我目前使用自定义类型和自定义解组将其解组为如下所示的结构：

type LowestPricedPricedOffers struct {

Error AmazonError `xml:"Error"`
All   struct {

        /*The only way I found to retrieve 'status' from the GetLowestPricedOffersForASINResult element was to wrap in the struct 'All'.
        This is the only reason the All struct exists.  Ideally would like to remove*/
        Status            string     `xml:"status,attr"` 

    ASIN              string     `xml:"Identifier>ASIN"`
    ItemCondition     string     `xml:"Identifier>ItemCondition"`
    TimeOfOfferChange string     `xml:"Identifier>TimeOfOfferChange"`
    TotalOfferCount   int        `xml:"Summary>TotalOfferCount"`
    ListPrice         float32    `xml:"Summary>ListPrice>Amount"`
    OfferCount        offerCount `xml:"Summary>NumberOfOffers"`

    //Want to take Currency code from LowestPrices below but cannot think of a way to achieve this against the lowestPrices type
    //CurrencyCode         string               `xml:"CurrencyCode"` 

    BuyBoxPrices         buyBoxPrices         `xml:"Summary>BuyBoxPrices"`
    LowestPrices         lowestPrices         `xml:"Summary>LowestPrices"`
    BuyBoxEligibleOffers buyBoxEligibleOffers `xml:"Summary>BuyBoxEligibleOffers"`

    Offers []struct {
        SubCondition                 string  `xml:"SubCondition"`
        SellerPositiveFeedbackRating float32 `xml:"SellerFeedbackRating>SellerPositiveFeedbackRating"`
        FeedbackCount                int     `xml:"SellerFeedbackRating>FeedbackCount"`
        ShippingTime                 struct {
            MinimumHours     int    `xml:"minimumHours,attr"`
            MaximumHours     int    `xml:"maximumHours,attr"`
            AvailabilityType string `xml:"availabilityType,attr"`
        }
        ListingPrice        float32 `xml:"ListingPrice>Amount"`
        Shipping            float32 `xml:"Shipping>Amount"`
        ShipsFrom           string  `xml:"ShipsFrom>Country"`
        IsFulfilledByAmazon bool    `xml:"IsFulfilledByAmazon"`
        IsBuyBoxWinner      bool    `xml:"IsBuyBoxWinner"`
        IsFeaturedMerchant  bool    `xml:"IsFeaturedMerchant"` //true if the seller of the item is eligible to win the Buy Box.
    } `xml:"Offers>Offer"`
} `xml:"GetLowestPricedOffersForASINResult"`

}

除了元素“GetLowestPricedOffersForASINResult”被称为“GetLowestPricedOffersForSKUResult”之外，我还有一些结构相同的 XML 数据。

如果我手动将标签 xml:"GetLowestPricedOffersForASINResult" 更改为 xml:"GetLowestPricedOffersForSKUResult"，那么代码将愉快地处理其他 XML。

我想让这个通用，如果你愿意，我的选择似乎是：

1. 复制代码并有 2 个基本相同的大块。这很容易，但在我看来是错误的方法。

2. 通过对 XML 原始字符串进行搜索和替换并简单地将 GetLowestPricedOffersForSKUResult 替换为 GetLowestPricedOffersForASINResult 来解决它，然后代码会愉快地处理数据，这似乎又是错误的。

3. 可能使用反射动态更改结构标记。这可能吗？

有没有人有任何建议来完成 3 或其他想法/方法来处理这个问题？

GetLowestPricedOffersForASINResult 结果集的代码位于go playground（不完整但有效）

Answer 1

使用@mkopriva 提供的建议，我制作了我的go playground 脚本的更新版本。

我不确定我的更改是否完美或是否准确反映了他的想法，但总的来说，它似乎满足了问题的要点。

如果有人有任何改进，他们会受到欢迎。