亚马逊产品广告 API 返回“SignatureDoesNotMatch”当请求url包含“！”时
我制作了一个使用亚马逊产品广告 API 的 VBA 程序。通常它工作得很好，但是当请求 url 包含 ! 或 ( 时，API 返回错误代码 SignatureDoesNotMatch。但是，签名和 URL 我的程序发送与 http://associates-amazon.s3.amazonaws.com/signed-requests/helper/index.html 生成（因此生成的 url 也会出现错误）
。 (, ), *, ! 和
@ / [ ] { } + - = , : ; # $ % & ^ ~ ` 不。（似乎它们被忽略了。）
从参数中删除这些字符是一个解决方案，但如果有人知道问题的原因和/或更好的解决方案，请告诉我。 .
程序在这里。 入口点是“main.searchBookInfo”和“助手.getSignature”生成签名
示例：
未签名的 URL：
http://ecs.amazonaws.jp/onca/xml?AWSAccessKeyId=AKIAIL7NZCKP32A32LQQ&AssociateTag=attentiveada-20&Author=&Operation=ItemSearch&Publisher=&ResponseGroup=ItemAttributes&SearchIndex=Books&Service=AWSECommerceService&Timestamp=2011-12-03T20%3A26%3A16%2B0900&Title=!&Version=2011-08-01
要签名的字符串：
GET ecs.amazonaws.jp /onca/xml AWSAccessKeyId=AKIAIL7NZCKP32A32LQQ&AssociateTag=attentiveada-20&Author=&Operation=ItemSearch&Publisher=&ResponseGroup=ItemAttributes&SearchIndex=Books&Service=AWSECommerceService&Timestamp=2011-12-03T20%3A26%3A16%2B0900&Title=!&Version=2011-08-01
签名：
fmQKEfrtYkdWoJNHUryWIPoybM%2FqzOdFFmlgrQkBS2E%3D
I made a VBA program that uses Amazon Product Advertising API. Usually it works well, but when the request url contains ! or ( the API returns error code SignatureDoesNotMatch. But, the signature and URL my program sends is completely the same with the one http://associates-amazon.s3.amazonaws.com/signed-requests/helper/index.html generates (so the generated url also gets the error).
The error is caused by (, ), *, ! and '.
@ / [ ] { } + - = . , : ; \ | _ ? " # $ % & ^ ~ ` don't. (Seemingly they're simply ignored.)
Removing those characters from parameters is a solution. But if anyone knows the cause of the problem and/or better solution, please let me know.
The program is here. The entry point is "main.searchBookInfo" and "helper.getSignature" generates signature.
Example:
Unsigned URL:
http://ecs.amazonaws.jp/onca/xml?AWSAccessKeyId=AKIAIL7NZCKP32A32LQQ&AssociateTag=attentiveada-20&Author=&Operation=ItemSearch&Publisher=&ResponseGroup=ItemAttributes&SearchIndex=Books&Service=AWSECommerceService&Timestamp=2011-12-03T20%3A26%3A16%2B0900&Title=!&Version=2011-08-01
String to sign:
GET ecs.amazonaws.jp /onca/xml AWSAccessKeyId=AKIAIL7NZCKP32A32LQQ&AssociateTag=attentiveada-20&Author=&Operation=ItemSearch&Publisher=&ResponseGroup=ItemAttributes&SearchIndex=Books&Service=AWSECommerceService&Timestamp=2011-12-03T20%3A26%3A16%2B0900&Title=!&Version=2011-08-01
Signature:
fmQKEfrtYkdWoJNHUryWIPoybM%2FqzOdFFmlgrQkBS2E%3D
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评论（1）
我能够通过不编码
!字符来重现此 (SignatureDoesNotMatch)。因此，我假设如果您在签名之前对!字符进行编码，那么这将起作用。尽管我没有测试其他角色，但情况可能也是如此。仅供参考，当我使用
!作为ItemSearch操作的Title参数时，我确实得到了结果。I was able to reproduce this (
SignatureDoesNotMatch) by not encoding the!character. So I'm going to assume that if you encode the!character before you sign then this will work. The same is probably true of the other characters although I didn't test them.Just FYI, I did get results back when using
!as aTitleparameter for anItemSearchoperation.