如何为每个ASIN获取单独的XML？Amazon-MWS

Question

我有一个带有20个ASIN的请求。我得到了具有20个ASIN的XML形式的响应。我想得到一个XML响应一个ASIN和保存在txt文件(20个XML)。但我只能在请求1ASIN而不是20的情况下这样做，但这样做的过程非常慢。我该怎么办？问题2.如何创建1个全为ASIN (例如1000)的XML？

    $arr = file('asin.txt',FILE_IGNORE_NEW_LINES);
$arr_chunks = array_chunk($arr, 20);

$request->setMarketplaceId(MARKETPLACE_ID);
$asin_list = new MarketplaceWebServiceProducts_Model_ASINListType();

//$request->setASINList($asin_list);
$request->setItemCondition('used');

foreach ($arr_chunks as $value){
    $value = $value;
    $asin_list->setASIN($value);
$request->setASINList($asin_list);
 sleep(1);
 invokeGetLowestOfferListingsForASIN($service, $request);
}

  function invokeGetLowestOfferListingsForASIN(MarketplaceWebServiceProducts_Interface $service, $request)
  {
      try {
        $response = $service->GetLowestOfferListingsForASIN();


 file_put_contents('asin2.xml', $response->toXML());
        echo ("Service Response\n");
        echo ("=============================================================================\n");

        $dom = new DOMDocument();
        $dom->loadXML($response->toXML());
        $dom->preserveWhiteSpace = FALSE;
        $dom->formatOutput = true;
        echo $dom->saveXML();
       // echo("ResponseHeaderMetadata: " . $response->getResponseHeaderMetadata() . "\n");

下面是一个XML示例(asin2.xml)

<GetLowestOfferListingsForASINResponse
    xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
    <GetLowestOfferListingsForASINResult
        ASIN='3944660110' status='Success'>
        <AllOfferListingsConsidered>true</AllOfferListingsConsidered>
        <Product>
            <Identifiers>
                <MarketplaceASIN>
                    <MarketplaceId>A1PA6795UKMFR9</MarketplaceId>
                    <ASIN>3944660110</ASIN>
                </MarketplaceASIN>
            </Identifiers>
            <LowestOfferListings></LowestOfferListings>
        </Product>
    </GetLowestOfferListingsForASINResult>
    <GetLowestOfferListingsForASINResult
        ASIN='3000383964' status='Success'>
        <AllOfferListingsConsidered>true</AllOfferListingsConsidered>
        <Product>
            <Identifiers>
                <MarketplaceASIN>
                    <MarketplaceId>A1PA6795UKMFR9</MarketplaceId>
                    <ASIN>3000383964</ASIN>
                </MarketplaceASIN>
            </Identifiers>
            <LowestOfferListings>
                <LowestOfferListing>
                    <Qualifiers>
                        <ItemCondition>Used</ItemCondition>
                        <ItemSubcondition>Good</ItemSubcondition>
                        <FulfillmentChannel>Merchant</FulfillmentChannel>
                        <ShipsDomestically>True</ShipsDomestically>
                        <ShippingTime>
                            <Max>0-2 days</Max>
                        </ShippingTime>
                        <SellerPositiveFeedbackRating>98-100%
                        </SellerPositiveFeedbackRating>
                    </Qualifiers>
                    <NumberOfOfferListingsConsidered>1
                    </NumberOfOfferListingsConsidered>
                    <SellerFeedbackCount>1388</SellerFeedbackCount>
                    <Price>
                        <LandedPrice>
                            <CurrencyCode>EUR</CurrencyCode>
                            <Amount>31.80</Amount>
                        </LandedPrice>
                        <ListingPrice>
                            <CurrencyCode>EUR</CurrencyCode>
                            <Amount>28.80</Amount>
                        </ListingPrice>
                        <Shipping>
                            <CurrencyCode>EUR</CurrencyCode>
                            <Amount>3.00</Amount>
                        </Shipping>
                    </Price>
                    <MultipleOffersAtLowestPrice>False</MultipleOffersAtLowestPrice>
                </LowestOfferListing>
            </LowestOfferListings>
        </Product>
    </GetLowestOfferListingsForASINResult>
    <GetLowestOfferListingsForASINResult
        ASIN='3000556575' status='Success'>
        <AllOfferListingsConsidered>true</AllOfferListingsConsidered>
        <Product>
            <Identifiers>
                <MarketplaceASIN>
                    <MarketplaceId>A1PA6795UKMFR9</MarketplaceId>
                    <ASIN>3000556575</ASIN>
                </MarketplaceASIN>
            </Identifiers>
            <LowestOfferListings></LowestOfferListings>
        </Product>
    </GetLowestOfferListingsForASINResult>
    <ResponseMetadata>
        <RequestId>3caac4dc-ca52-446f-9f4b-a8da2d685ce7</RequestId>
    </ResponseMetadata>
</GetLowestOfferListingsForASINResponse>

Answer 1

一旦有了XML文档，就可以使用XPath列出每个ASIN，然后可以输出为XML，并且可以将每个段保存到适当的文件中……

   $dom = new DOMDocument ();
   $dom->load ( 't1.xml' );
   $xp = new DOMXPath($dom);
   $xp->registerNamespace("default", 
                "http://mws.amazonservices.com/schema/Products/2011-10-01");
    foreach ( $xp->query("//default:GetLowestOfferListingsForASINResult") as $asin ) {
        echo "For ASIN:".$asin->getAttribute('ASIN').PHP_EOL;
        echo "ASIN=".$xp->evaluate ("string(descendant::default:MarketplaceASIN/default:ASIN/text())", $asin) .PHP_EOL;

        echo $dom->saveXML($asin).PHP_EOL;
        $prices = $xp->query("descendant::default:Price", $asin );
        foreach ( $prices as $price )   {
            echo "LandedPrice=".$xp->evaluate("string(descendant::default:LandedPrice/default:Amount/text())",$price).PHP_EOL;
            echo "ListingPrice=".$xp->evaluate("string(descendant::default:ListingPrice/default:Amount/text())",$price).PHP_EOL;
            echo "Shipping=".$xp->evaluate("string(descendant::default:Shipping/default:Amount/text())",$price).PHP_EOL;

        }

    }