使用Amazon Product Merchandising API构建自定义会员链接

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
<?php
namespace AppServices;
use ApplibvendorawsAWSSignedRequest;
class AmazonAssocHelper {
//AMAZON AFFILIATE PROGRAM ACCESS -- sign into affiliate-program.amazon.com
const AMZ_ASSOC_TAG = 'your-affiliate-id';
//AWS credentials -- sign into aws.amazon.com
const AMZ_ASSOC_ACCESSKEY = 'YOUR_ACCESS_KEY';
const AMZ_ASSOC_SECRETKEY = 'YOUR_SECRET_KEY';
//Set the values for some of the search parameters
private static $operation = "ItemSearch";
private static $version = "2013-08-01";
private static $response_group = "Small,Images,OfferSummary";
protected function __construct() {
}
/**
* Fetches relevant product data in product API from keyphrase and category
* returns: array of data from the top result node
*/
public static function fetch_product_data($keyphrase, $category) {
$result_xml = self::get_search_results($keyphrase, $category);
//return an array containing the item name, link, image, and price
return self::get_top_result_data($result_xml);
}
}

1
2
3
4
5
6
7
8
9
10
11
http://webservices.amazon.com/onca/xml?
AWSAccessKeyId=AKIAJILHUTAJ5MMQRJWA
&AssociateTag=envtut-20
&Operation=ItemSearch
&ResponseGroup=Small%2CImages%2COfferSummary
&SearchIndex=Movies
&Service=AWSECommerceService
&Timestamp=2015-11-06T20%3A34%3A52Z
&Title=Jurassic%20World
&Version=2013-08-01
&Signature=nwkfvvLCvl11Cunuthz6orXCbBMnBc1Z7S3HSfYW%2B14%3D

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
/**
* Runs search with signed request on product API using keyphrase and category name
* returns: XML object
*/
private static function get_search_results($keyphrase, $search_index) {
//Define the request
$params = array("SearchIndex"=>$search_index, //the category
"Title"=>$keyphrase,
"Operation"=>self::$operation,
"ResponseGroup"=>self::$response_group);
$request = AWSSignedRequest::get_signed_request('com', $params, self::AMZ_ASSOC_ACCESSKEY, self::AMZ_ASSOC_SECRETKEY, self::AMZ_ASSOC_TAG, self::$version);
$response = file_get_contents($request);
//for testing
/*header('Content-type: application/xml');
echo $response;
exit;*/
return simplexml_load_string($response);
}

1
2
3
4
5
6
7
8
9
<?php
namespace AppServices;
require_once getcwd() . '/App/app_global.php';
/**
*	Call the Product API by passing in the name of the product and the shopping category
*	("Books", "Movies", and "VideoGames" are examples -- see API documentation for full list)
*/
$product_data = AmazonAssocHelper::fetch_product_data("Jurassic World", "Movies");
?>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
<ItemSearchResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2013-08-01">
<OperationRequest>
<RequestId>807ede04-f196-44a0-99ff-ff1bb1c12fee</RequestId>
<Arguments>
<Argument Name="AWSAccessKeyId" Value="AWS_ACCESS_KEY"/>
<Argument Name="AssociateTag" Value="envtut-20"/>
<Argument Name="Operation" Value="ItemSearch"/>
<Argument Name="ResponseGroup" Value="Small,Images,OfferSummary"/>
<Argument Name="SearchIndex" Value="Movies"/>
<Argument Name="Service" Value="AWSECommerceService"/>
<Argument Name="Timestamp" Value="2015-11-03T21:32:57Z"/>
<Argument Name="Title" Value="Jurassic World"/>
<Argument Name="Version" Value="2013-08-01"/>
<Argument Name="Signature" Value="QhUpga/f2MReU4xpdzCr432hMvxeA72N+v+G0hVi17M="/>
</Arguments>
<RequestProcessingTime>0.0887890000000000</RequestProcessingTime>
</OperationRequest>
<Items>
<Request>...</Request>
<TotalResults>37</TotalResults>
<TotalPages>4</TotalPages>
<MoreSearchResultsUrl>...</MoreSearchResultsUrl>
<Item>
<ASIN>B016W01EXI</ASIN>
<DetailPageURL>
http://www.amazon.com/Jurassic-World-Chris-Pratt/dp/B016W01EXI%3FSubscriptionId%3DAKIAJILHUTAJ5MMQRJWA%26tag%3Denvtut-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB016W01EXI
</DetailPageURL>
<ItemLinks>
<ItemLink>
<Description>Technical Details</Description>
<URL>
http://www.amazon.com/Jurassic-World-Chris-Pratt/dp/tech-data/B016W01EXI%3FSubscriptionId%3DAKIAJILHUTAJ5MMQRJWA%26tag%3Denvtut-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D386001%26creativeASIN%3DB016W01EXI
</URL>
</ItemLink>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
/**
* Parses top result node, and its attributes, from XML object
* returns: array of product data
*/
private static function get_top_result_data($xml) {
if (!empty(self::handle_errors($xml))) {
return array('error'=>self::handle_errors($xml));
}
//get the first result node
$first_item = $xml->Items[0]->Item;
$item_title = $first_item->ItemAttributes->Title;
$item_link = $first_item->DetailPageURL;
$item_image = $first_item->LargeImage->URL;
$item_price = $first_item->OfferSummary->LowestNewPrice->FormattedPrice;
return array( 'title'=>(string)$item_title,
'link'=>(string)$item_link,
'image'=>(string)$item_image,
'price'=>(string)$item_price );
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/**
* Checks for errors in the request/ result
* returns: array with message(s) describing the "error"
*/
private static function handle_errors($xml) {
$errors_arr = array();
//process errors in request
foreach ($xml->OperationRequest->Errors->Error as $error) {
error_log("Error code: " . $error->Code . "rn");
error_log($error->Message . "rn");
error_log("rn");
array_push($errors_arr, (string)$error->Message);
}
//check for invalid category, no matches, or other search error
foreach ($xml->Items->Request->Errors->Error as $error) {
error_log("Error code: " . $error->Code . "rn");
error_log($error->Message . "rn");
error_log("rn");
array_push($errors_arr, (string)$error->Message);
}
return $errors_arr;
}

1
Array ( [title] => Jurassic World [link] => http://www.amazon.com/Jurassic-World-Chris-Pratt/dp/B016W01EXI%3FSubscriptionId%3DAKIAJILHUTAJ5MMQRJWA%26tag%3Denvtut-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB016W01EXI [image] => http://ecx.images-amazon.com/images/I/51ePeFXU2ML.jpg [price] => $5.99 )

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
<!doctype html>
<html>
<head>
<title>Tuts+ Demo: Amazon Product API</title>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<link rel="stylesheet" href="css/reset.css" />
<link rel="stylesheet" href="css/style.css" />
</head>
<body>
<?php if (!empty($product_data) && array_key_exists("error", $product_data) != 1): ?>
<div class="affiliate_wrap">
<a href="<?php echo $product_data['link']; ?>" target="_blank">
<img src="<?php echo $product_data['image']; ?>" alt="<?php echo $product_data['title']; ?>" />
</a>
<h2>
<a href="<?php echo $product_data['link']; ?>" target="_blank"><?php echo $product_data['title']; ?></a>
</h2>
<p><em><?php echo $product_data['price']; ?></em> on Amazon</p>
<a class="button" href="<?php echo $product_data['link']; ?>" target="_blank">Buy Now</a>
</div>
<?php endif ?>
</body>
</html>