C#Amazon SP API CreateFeedDocument不工作

Question

通过Amazon SP API上传提要有3个步骤，第一个步骤是通过createFeedDocumentAPI获取提要加密信息。但我收到了错误请求作为以下内容的响应：

{
  "errors": [
    {
      "code": "InvalidInput",
      "message": "Invalid Input",
      "details": ""
    }
  ]
}

C#代码

        private async Task<IRestResponse> CreateFeedDocument()
        {
            IRestRequest restRequest = new RestRequest("feeds/2020-09-04/documents", Method.POST);
            restRequest.AddParameter("contentType", "application/xml; charset=UTF-8", ParameterType.RequestBody);
            restRequest.AddQueryParameter("MarketplaceIds", "A21TJRUUN4KGV");
            restClient = new RestClient(live_url_base);
            restRequest = await signRequest(restRequest, restClient);
            return restClient.Execute(restRequest);
        }

        private async Task<IRestRequest> signRequest(IRestRequest restRequest, RestClient restClient)
        {
            var roleAcccess = await GetAssumeRoleTokenDetail();
            restRequest.AddHeader("x-amz-access-token", accessToken);

            AWSAuthenticationCredentials AWSCredentials = new AWSAuthenticationCredentials();
            AWSCredentials.AccessKeyId = roleAcccess.Credentials.AccessKeyId;
            AWSCredentials.SecretKey = roleAcccess.Credentials.SecretAccessKey;
            AWSCredentials.Region = region;

            restRequest.AddHeader("X-Amz-Security-Token", roleAcccess.Credentials.SessionToken);
            return new AWSSigV4Signer(AWSCredentials).Sign(restRequest, restClient.BaseUrl.Host);
        }

我怀疑我没有正确使用restRequest.AddParameter，但我不确定。

我一直在以下链接：
https://github.com/amzn/selling-partner-api-docs/blob/main/references/feeds-api/feeds_2020-09-04.md#createfeeddocument

https://github.com/amzn/selling-partner-api-docs/blob/main/guides/en-US/use-case-guides/feeds-api-use-case-guide/feeds-api-use-case-guide-2020-09-04.md#step-1-create-a-feed-document

如何使用.net在Amzon中使用销售合作伙伴api加密和上载数据

更新我还尝试替换下面的行
restRequest.AddParameter（“contentType”，“application/xml；charset=UTF-8”，ParameterType.RequestBody） 进行编码

但后来我得到了InvalidSignature错误，如下所示：

{
  "errors": [
    {
      "message": "The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.

The Canonical String for this request should have been
'POST
/feeds/2020-09-04/documents

host:sellingpartnerapi-eu.amazon.com
x-amz-access-token:Atza|IwEBIA5KgrCsBbSXHmrXFS_FIgBTInh_xPAydLfi5q2P9xaFQf7p8Zl4NjqhHHxqRzUku__Q7GN1p2WQGRzuAoAa8oMkPLx57NJ05SqxEVXXG-fet3_XgKj8uBCU30HaGPsKltf4g2MD8Pqqt2OUrOXtkv4dAAjjCIxC-bFwVqOhvHktAur--NBv-bJaPZ608Av1GEu96GsNEV9eb0saVBwLaZD7NW3oOjzlCc8GPV9hdqHV5TUXY77QZgBLD1y94Vs1fSo54ShpyoMMOZebzbSr1K5gtf3wJZ.........................{ I hid it }...........................................
x-amz-date:20210524T175148Z
x-amz-security-token:FwoGZXIvYXdzEGsaDNUytY0xuP5/u61APiK2ARMZgv4IT+y2HLzdg5FjZOv6aL2bJ3baJPxBtCY2/7ASntTXfAF5s39P3/qspLLQfmqHPZiMGjweCE3Yf3aW5Q1mt+FLT2s2VUwuOawOQwDll51T2HB3wqyaDOSEpsWeR2Iym4TJXE2hbo7q5CQQBXissOo1Oruk5gcAp7uQHpnyuhCRCkfv/ErEpzdDA0JqfhMxdzmViVgsL1Kzalnbcy9lp+ACI4TL70iOl6j6xkyhFexe/aLXKLLPr4UGMi3Ver2CL6Q4kz.........................{ I hid it }...........................................

host;x-amz-access-token;x-amz-date;x-amz-security-token
4d719849acd655844ab5129f5e54a0ed16954c9580c7a9a737504faf42b309e2'

The String-to-Sign should have been
'AWS4-HMAC-SHA256
20210524T175148Z
20210524/eu-west-1/execute-api/aws4_request
a20e7ffe252dbf98d6a4b9213511ac1918f8bbad75ccbfd7ec46f5c9c1457b08'
",
     "code": "InvalidSignature"
    }
  ]
}

注意：我已经移除了一些代币的尾随字符并放置了……{I hide it}。。。。。。。。。。




Answer 1

我在我的开源库和它的工作中做到了这一点

https://github.com/abuzuhri/Amazon-SP-API-CSharp

这里是创建和提交提要的示例

 ConstructFeedService createDocument = new ConstructFeedService("A3J37AJU4O9RHK", "1.02");

        var list = new List<PriceMessage>();
        list.Add(new PriceMessage()
        {
            SKU = "8201031206122...",
            StandardPrice = new StandardPrice()
            {
                currency = BaseCurrencyCode.AED.ToString(),
                Value = (201.0522M).ToString("0.00")
            }
        });
        createDocument.AddPriceMessage(list);

        var xml = createDocument.GetXML();

        var feedID = amazonConnection.Feed.SubmitFeed(xml, FeedType.POST_PRODUCT_PRICING_DATA);

        Thread.Sleep(1000*30);

        var feedOutput=amazonConnection.Feed.GetFeed(feedID);

        var outPut=amazonConnection.Feed.GetFeedDocument(feedOutput.ResultFeedDocumentId);

        var reportOutpit = outPut.Url;

Answer 2

试试这个吧

restRequest.AddJsonBody("{\"contentType\":\"text/tab-separated-values; charset=UTF-8\"}");

RestClient restClient = new RestClient("https://sandbox.sellingpartnerapi-eu.amazon.com/");

IRestRequest restRequest = new RestRequest("/feeds/2021-06-30/documents", Method.POST);

restRequest.AddJsonBody("{\"contentType\":\"text/tab-separated-values; charset=UTF-8\"}");