ColdFusion 亚马逊商品搜索

Question

我正在尝试通过商品搜索和 return 商品列表来调用亚马逊，然后我想做的是来自特定卖家的 return 商品。

<cfscript>
    test = ItemLookup(ItemId="B00R6T0PLM",AWSAccessKeyId=request.awsaccesskeyid,AssociateTag=request.AssociateTag,secretkey=request.secretkey); 
</cfscript>



<cffunction name="ItemLookup" hint="AZ lookup by PID">
    <cfargument name="ItemId">
    <cfargument name="AWSAccessKeyId" required="false" default="XXXXXXXXXXXXX">
    <cfargument name="AssociateTag" required="false" default="zzzzz-">
    <cfargument name="secretkey" required="false" default="YYYYYYYYYYYYYYYYYYY">
    <cfargument name="ResponseGroup" required="false" default="Medium">
    <cfset ts = '#DateFormat(now(), "YYYY-MM-DD")#T'>
    <cfset tt = '#TimeFormat(now(), "HH:mm:ss")#Z'>
    <cfset encts = '#ts#' & urlencodedFormat('#tt#')>
    <cfset p = arraynew(1)>
    <cfset p[4] = 'Service=AWSECommerceService'>
    <cfset p[8] = 'AWSAccessKeyId=#arguments.AWSAccessKeyId#'>
    <cfset p[3] = 'Operation=ItemLookup'>
    <cfset p[2] = 'ItemId=#arguments.ItemId#'>
    <cfset p[5] = 'Timestamp=#encts#'>
    <cfset p[6] = 'AssociateTag=#arguments.AssociateTag#'>
    <cfset p[7] = 'Version=2011-08-01'>
    <cfset p[1] = 'ResponseGroup=#arguments.ResponseGroup#'>
    <cfset ArraySort(p,"text","asc")>
    <cfset req_params = '#p[1]#&#p[2]#&#p[3]#&#p[4]#&#p[5]#&#p[6]#&#p[7]#&#p[8]#'>
    <cfset lineBreak = Chr(10)>
    <cfset tosign = 'GET#lineBreak#webservices.amazon.in#lineBreak#/onca/xml#lineBreak##req_params#'>
    <cfset signed = URLEncodedFormat(ToBase64(HMAC_SHA256(tosign,"#arguments.secretkey#")))>
    <cfset req = 'http://webservices.amazon.com/onca/xml?Service=AWSECommerceService&Operation=ItemSearch&AWSAccessKeyId=arguments.AWSAccessKeyId&AssociateTag=arguments.AssociateTag&SearchIndex=Apparel&Keywords=Shirt&Timestamp=#ts##tt#&Signature=#signed#'>
    <cfhttp url='#req#' method="get" result="res"/>

    <cfreturn res.filecontent>
    <cfreturn tosign>

</cffunction>

<cffunction name="HMAC_SHA256" returntype="binary" access="public" output="no" hint="Sign for AZ request">
    <cfargument name="signMessage" type="string" required="true" />
    <cfargument name="signKey" type="string" required="true" />
    <cfset local.jMsg = JavaCast("string",arguments.signMessage).getBytes("iso-8859-1") />
    <cfset local.jKey = JavaCast("string",arguments.signKey).getBytes("iso-8859-1") />
    <cfset local.key = createObject("java","javax.crypto.spec.SecretKeySpec") />
    <cfset local.mac = createObject("java","javax.crypto.Mac") />
    <cfset local.key = local.key.init(local.jKey,"HmacSHA256") />
    <cfset local.mac = local.mac.getInstance(local.key.getAlgorithm()) />
    <cfset local.mac.init(local.key) />
    <cfset local.mac.update(local.jMsg) />
    <cfreturn local.mac.doFinal() />
</cffunction>

<cfdump var="#test#">

我返回的错误是...

<?xml version="1.0"?> <ItemSearchErrorResponse xmlns="http://ecs.amazonaws.com/doc/2005-10-05/"><Error><Code>RequestExpired</Code><Message>Request has expired. Timestamp date is 2016-08-09T11:42:19Z.</Message></Error><RequestId>c5852914-b6a1-474a-9977-28a20dcb5029</RequestId></ItemSearchErrorResponse>

Answer 1

我认为使用 Now() 作为时间戳的基础意味着请求在发送时已经过期。

尝试将 30 分钟添加到 Now() 值：

<cfset ts = '#DateFormat(DateAdd("n", 30, Now()), "YYYY-MM-DD")#T'> 
<cfset tt = '#TimeFormat(DateAdd("n", 30, Now()), "HH:mm:ss")#Z'>

Answer 2

error message 可能正是它所说的意思。时间戳值太旧：

RequestExpired - The request reached the service more than 15 minutes after the date stamp on the request or more than 15 minutes after the request expiration date (such as for pre-signed URLs), or the date stamp on the request is more than 15 minutes in the future. If you're using temporary security credentials, this error can also occur if the credentials have expired.

这可能是由于时区的原因。由于您的时间戳字符串使用 Z、it will be considered UTC time。如果您的 JVM 的实际时区有所不同，您提交的日期和时间可能已经过去或太远了（至少在 UTC 中）。先尝试将 now() 转换为 UTC：

<cfset utcNow = dateConvert("local2utc", now())>
<cfset ts = DateFormat(utcNow , "YYYY-MM-DD")&"T">
<cfset tt = TimeFormat(utcNow , "HH:mm:ss")&"Z">

ColdFusion 亚马逊商品搜索

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