我试图将我的XSLT样式表应用于Amazon API xml输出并在页面
上显示电影标题这是我的XSLT文件(amazon.xsl):<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:aws="http://webservices.amazon.com/AWSECommerceService/2011-08-01">
<xsl:output method="xml" version="1.0" omit-xml-declaration="yes" indent="yes" media-type="text/html"/>
<xsl:template match="/">
<xml>
<root>
<xsl:apply-templates select="aws:ItemLookupResponse/aws:Items/aws:Item/aws:ItemAttributes/aws:Title" />
</root>
</xml>
</xsl:template>
<xsl:template match="aws:Title">
<xsl:text>Movie title</xsl:text>
<xsl:value-of select="."/>
</xsl:template>
</xsl:stylesheet>
这是Amazon API XML输出:
<ItemLookupResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2011-08-01">
<OperationRequest>
<HTTPHeaders>
<Header Name="UserAgent" Value="Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.172 Safari/537.22"/>
</HTTPHeaders>
<RequestId>a1138e89-4335-4650-80f2-641e3c58b623</RequestId>
<Arguments>
<Argument Name="Operation" Value="ItemLookup"/>
<Argument Name="Service" Value="AWSECommerceService"/>
<Argument Name="Signature" Value="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"/>
<Argument Name="AssociateTag" Value="xxxxxxxxxxxxxx"/>
<Argument Name="Version" Value="2011-08-01"/>
<Argument Name="ItemId" Value="B004LWZWGK"/>
<Argument Name="AWSAccessKeyId" Value="xxxxxxxxxxxxxxxxxxxx"/>
<Argument Name="Timestamp" Value="2013-03-21T13:56:55.000Z"/>
<Argument Name="ResponseGroup" Value="Small"/>
</Arguments>
<RequestProcessingTime>0.0189320000000000</RequestProcessingTime>
</OperationRequest>
<Items>
<Item>
<ItemAttributes>
<Title>
The Dark Knight Rises (Blu-ray/DVD Combo+UltraViolet Digital Copy)
</Title>
</ItemAttributes>
</Item>
</Items>
</ItemLookupResponse>
我已经找到并使用以下PHP代码来搜索电影标题并将其显示在页面上。然而,它只以纯文本形式显示它。我想将XSLT样式应用于它,但我不知道如何正确地将它包含在我的php代码中。
如果正确使用XSLT,它将在实际标题的正上方显示"Movie title"。
amazon.php
include('aws_signed_request.php');
$public_key = 'XXXXXXXXXXXXXXXXXXXX';
$private_key = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
$associate_tag = 'xxxxxxxxxxxxxxxxxxxxxxxxx';
// generate signed URL
$request = aws_signed_request('co.uk', array(
'Operation' => 'ItemLookup',
'ItemId' => 'B004LWZWGK',
'ResponseGroup' => 'Small'), $public_key, $private_key, $associate_tag);
// do request (you could also use curl etc.)
$response = @file_get_contents($request);
if ($response === FALSE) {
echo "Request failed.'n";
} else {
// parse XML
$xsl = new DOMDocument;
$xsl->load('amazon.xsl');
$proc = new XSLTProcessor();
$proc->importStyleSheet($xsl);
$doc = DOMDocument::loadXML($response);
$transform = $proc->transformToXML($doc);
$pxml = simplexml_load_string($transform);
if ($pxml === FALSE) {
echo "Response could not be parsed.'n";
} else {
if (isset($pxml->Items->Item->ItemAttributes->Title)) {
echo $pxml->Items->Item->ItemAttributes->Title, "'n";
}
}
}
* aws_signed_request.php * function aws_signed_request($region, $params, $public_key, $private_key, $associate_tag=NULL, $version='2011-08-01')
{
/*
Parameters:
$region - the Amazon(r) region (ca,com,co.uk,de,fr,co.jp)
$params - an array of parameters, eg. array("Operation"=>"ItemLookup",
"ItemId"=>"B000X9FLKM", "ResponseGroup"=>"Small")
$public_key - your "Access Key ID"
$private_key - your "Secret Access Key"
$version (optional)
*/
// some paramters
$method = 'GET';
$host = 'webservices.amazon.'.$region;
$uri = '/onca/xml';
// additional parameters
$params['Service'] = 'AWSECommerceService';
$params['AWSAccessKeyId'] = $public_key;
// GMT timestamp
$params['Timestamp'] = gmdate('Y-m-d'TH:i:s'Z');
// API version
$params['Version'] = $version;
if ($associate_tag !== NULL) {
$params['AssociateTag'] = $associate_tag;
}
// sort the parameters
ksort($params);
// create the canonicalized query
$canonicalized_query = array();
foreach ($params as $param=>$value)
{
$param = str_replace('%7E', '~', rawurlencode($param));
$value = str_replace('%7E', '~', rawurlencode($value));
$canonicalized_query[] = $param.'='.$value;
}
$canonicalized_query = implode('&', $canonicalized_query);
// create the string to sign
$string_to_sign = $method."'n".$host."'n".$uri."'n".$canonicalized_query;
// calculate HMAC with SHA256 and base64-encoding
$signature = base64_encode(hash_hmac('sha256', $string_to_sign, $private_key, TRUE));
// encode the signature for the request
$signature = str_replace('%7E', '~', rawurlencode($signature));
// create request
$request = 'http://'.$host.$uri.'?'.$canonicalized_query.'&Signature='.$signature;
return $request;
}
我知道这是很多的代码,但一切在PHP工作得很好,我得到一个电影标题显示在页面上。我只是想将我的XSLT样式表也应用到它。我对PHP很陌生,不知道如何正确地做到这一点
为了回答评论中的问题,以下是如何从该输入生成HTML页面的方法:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:aws="http://webservices.amazon.com/AWSECommerceService/2011-08-01"
exclude-result-prefixes="aws">
<xsl:output method="html" indent="yes" omit-xml-declaration="yes"/>
<xsl:template match="/">
<html>
<head>
<title></title>
</head>
<body>
<xsl:apply-templates />
</body>
</html>
</xsl:template>
<xsl:template match="aws:Title">
<h1>
<xsl:text>Movie Title</xsl:text>
</h1>
<xsl:value-of select="." />
</xsl:template>
<xsl:template match="text()" />
</xsl:stylesheet>
当在示例输入上运行时,将产生:
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<title></title>
</head>
<body>
<h1>Movie Title</h1>
The Dark Knight Rises (Blu-ray/DVD Combo+UltraViolet Digital Copy)
</body>
</html>
如果您只是想生成一个HTML片段以添加到您正在显示的更大的页面中,您可以使用以下命令:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:aws="http://webservices.amazon.com/AWSECommerceService/2011-08-01"
exclude-result-prefixes="aws">
<xsl:output method="html" indent="yes" omit-xml-declaration="yes"/>
<xsl:template match="aws:Title">
<div>
<h1>
<xsl:text>Movie Title</xsl:text>
</h1>
<xsl:value-of select="." />
</div>
</xsl:template>
<xsl:template match="text()" />
</xsl:stylesheet>
生产:
<h1>Movie Title</h1>
The Dark Knight Rises (Blu-ray/DVD Combo+UltraViolet Digital Copy)
您已经创建了处理器并在第6行导入了样式表& &;7在amazon.php
,但你仍然需要应用它使用XSLTProcessor::transformToXML
// parse XML
$doc = DOMDocument::loadXML($response);
$transform = $proc->transformToXML($doc);
$pxml = simplexml_load_string($transform);