我正在尝试访问一个简单的AWS IOT REST服务,但我还没有成功。以下是我所做的:
- 在我的AWS中创建了一个IAM用户,并下载了访问密钥和秘密密钥。
- 使用该用户登录AWS IOT并创建了一个"thing"。
- 从thing的属性中找到了阴影的REST URL。
- 使用带有新"aws signature"功能的Postman,并提供访问密钥、秘密密钥、区域(us-east-1)和服务名称(iot)。
试图"GET"该端点,但结果是:
{ "message": "Credential should be scoped to correct service. ", "traceId": "be056198-d202-455f-ab85-805defd1260d" }
我认为Postman可能有问题,因此尝试使用连接到S3的aws-sdk-sample示例,并将其更改为连接到IOT URL。以下是我的程序片段(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"}
------------------------------------
有人能告诉我我做错了什么吗?AWS文档上关于这个错误的信息很少。请帮帮我。