AWS IOT - Credential的范围应该是正确的服务

Question

我正在尝试访问一个简单的AWS IOT REST服务,但我还没有成功.这就是我做的.

1. 我在我的aws中创建了一个iam用户,并下载了访问密钥和密钥
2. 使用该用户登录AWS IOT并创建"事物"
3. 从thing的属性中我找到了影子的REST URL
4. 使用Postman的新"aws签名"功能,并为其提供访问密钥,密钥,区域(us-east-1)和服务名称(iot)

5. 试图"获取"端点,这就是我得到的 -

   { "message": "Credential should be scoped to correct service. ", "traceId": "be056198-d202-455f-ab85-805defd1260d" }

6. 我认为邮递员有问题,所以我尝试使用连接到S3的aws-sdk-sample示例并将其更改为连接到IOT URL.这是我的程序片段(Java)

   String awsAccessKey = "fasfasfasdfsdafs";
   String awsSecretKey = "asdfasdfasfasdfasdfasdf/asdfsdafsd/fsdafasdf";
   
   URL  endpointUrl = null;
   String regionName = "us-east-1";
   try {
       endpointUrl = new URL("https://dasfsdfasdf.iot.us-east-1.amazonaws.com/things/SOMETHING/shadow");
   }catch (Exception e){
       e.printStackTrace();
   }
   Map<String, String> headers = new HashMap<String, String>();
   headers.put("x-amz-content-sha256", AWSSignerBase.EMPTY_BODY_SHA256);
   
   AWSSignerForAuthorizationHeader signer = new AWSSignerForAuthorizationHeader(
           endpointUrl, "GET", "iot", regionName);
   String authorization = signer.computeSignature(headers,
           null, // no query parameters
           AWSSignerBase.EMPTY_BODY_SHA256,
           awsAccessKey,
           awsSecretKey);
   
   // place the computed signature into a formatted 'Authorization' header
   // and call S3
   headers.put("Authorization", authorization);
   String response = HttpUtils.invokeHttpRequest(endpointUrl, "GET", headers, null);
   System.out.println("--------- Response content ---------");
   System.out.println(response);
   System.out.println("------------------------------------");
   

这给了我同样的错误 -

--------- Request headers ---------
x-amz-content-sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Authorization: AWS4-HMAC-SHA256 Credential=fasfasfasdfsdafs/20160212/us-east-1/iot/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=3b2194051a8dde8fe617219c78c2a79b77ec92338028e9e917a74e8307f4e914
x-amz-date: 20160212T182525Z
Host: dasfsdfasdf.iot.us-east-1.amazonaws.com
--------- Response content ---------
{"message":"Credential should be scoped to correct service. ","traceId":"cd3e0d96-82fa-4da5-a4e1-b736af6c5e34"}
------------------------------------

有人可以告诉我,我做错了吗？AWS文档没有关于此错误的大量信息.请帮忙

Answer 1

iotdata如果iot
示例, 请使用相应的方式签署您

AWSSignerForAuthorizationHeader signer = new AWSSignerForAuthorizationHeader(
    endpointUrl, "GET", "iotdata", regionName);