下面的XML响应是亚马逊对其中一个API的响应示例。它包括2条记录。我需要弄清楚如果状态是“ClientError”,或者如果它包含一个Error节点,如何从XML文档中删除记录。任何一个都可以工作。我在Rails项目中使用Nokogiri。如果存在这些条件之一,如何从XML文档中删除它的任何想法?
<?xml version="1.0"?>
<GetMyPriceForASINResponse
xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
<GetCompetitivePricingForASINResult ASIN="1933893445" status="ClientError">
<Error>
<Type>Sender</Type>
<Code>InvalidParameterValue</Code>
<Message>ASIN 1933893445 is not valid for marketplace ATPOWSJGJFNC</Message>
</Error>
</GetCompetitivePricingForASINResult>
<GetMyPriceForASINResult ASIN="1933890517" status="Success">
<Product xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01"
xmlns:ns2="http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd">
<Identifiers>
<MarketplaceASIN>
<MarketplaceId>ATVPDKIKX0DER</MarketplaceId>
<ASIN>1933890517</ASIN>
</MarketplaceASIN>
</Identifiers>
<Offers>
<Offer>
<BuyingPrice>
<LandedPrice>
<CurrencyCode>USD</CurrencyCode>
<Amount>303.99</Amount>
</LandedPrice>
<ListingPrice>
<CurrencyCode>USD</CurrencyCode>
<Amount>300.00</Amount>
</ListingPrice>
<Shipping>
<CurrencyCode>USD</CurrencyCode>
<Amount>3.99</Amount>
</Shipping>
</BuyingPrice>
<RegularPrice>
<CurrencyCode>USD</CurrencyCode>
<Amount>300.00</Amount>
</RegularPrice>
<FulfillmentChannel>MERCHANT</FulfillmentChannel>
<ItemCondition>Used</ItemCondition>
<ItemSubCondition>Acceptable</ItemSubCondition>
<SellerId>A1IMEXAMPLEWRC</SellerId>
<SellerSKU>SKU2468</SellerSKU>
</Offer>
</Offers>
</Product>
</GetMyPriceForASINResult>
<ResponseMetadata>
<RequestId>a3381684-87bd-416e-9b95-EXAMPLE9c236</RequestId>
</ResponseMetadata>
</GetMyPriceForASINResponse>
答案 0 :(得分:0)
<强>解决方案强>
# xml is initialized to XML string given in the question
doc = Nokogiri::XML(xml)
doc.search("[status='ClientError']").remove
puts doc.to_xml
<强>输出强>
<?xml version="1.0"?>
<GetMyPriceForASINResponse xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
<GetMyPriceForASINResult ASIN="1933890517" status="Success">
<Product xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01" xmlns:ns2="http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd">
<Identifiers>
<MarketplaceASIN>
<MarketplaceId>ATVPDKIKX0DER</MarketplaceId>
<ASIN>1933890517</ASIN>
</MarketplaceASIN>
</Identifiers>
<Offers>
<Offer>
<BuyingPrice>
<LandedPrice>
<CurrencyCode>USD</CurrencyCode>
<Amount>303.99</Amount>
</LandedPrice>
<ListingPrice>
<CurrencyCode>USD</CurrencyCode>
<Amount>300.00</Amount>
</ListingPrice>
<Shipping>
<CurrencyCode>USD</CurrencyCode>
<Amount>3.99</Amount>
</Shipping>
</BuyingPrice>
<RegularPrice>
<CurrencyCode>USD</CurrencyCode>
<Amount>300.00</Amount>
</RegularPrice>
<FulfillmentChannel>MERCHANT</FulfillmentChannel>
<ItemCondition>Used</ItemCondition>
<ItemSubCondition>Acceptable</ItemSubCondition>
<SellerId>A1IMEXAMPLEWRC</SellerId>
<SellerSKU>SKU2468</SellerSKU>
</Offer>
</Offers>
</Product>
</GetMyPriceForASINResult>
<ResponseMetadata>
<RequestId>a3381684-87bd-416e-9b95-EXAMPLE9c236</RequestId>
</ResponseMetadata>
</GetMyPriceForASINResponse>