The request signature we calculated does not match the signature you provided

[hindos]

Hello, I want to generate AWS signature, but always getting InvalidSignatureException, not sure why ? anyone can support me here, Thanks !

	        TreeMap<String, String> awsHeaders = new TreeMap<String, String>();
	        ZonedDateTime time = ZonedDateTime.now(ZoneOffset.systemDefault());
            String datestamp = time.format(DateTimeFormatter.ofPattern("yyyyMMdd"));
            String timestamp = datestamp + "T" + time.format(DateTimeFormatter.ofPattern("HHmmss")) + "Z";
            

	        awsHeaders.put("content-type", "application/x-amz-json-1.1");
	        awsHeaders.put("host", "athena.us-east-1.amazonaws.com");
	        awsHeaders.put("x-amz-date", timestamp);
	        awsHeaders.put("x-amz-target", "AmazonAthena.ListDatabases");
	        	        TreeMap<String, String> queryParams = new TreeMap<String, String>();
	        queryParams.put("Action", "ListDatabases");
	        queryParams.put("Version", "2017-05-18");
	        
AWSV4Auth aWSV4Auth = new AWSV4Auth.Builder("AKIAWXXHGTINQ7TJRWF3", "5LHp6JbaDBxzpIIpLCclY6CXH709xKVzZn3F777")
	                                           .regionName("us-east-1")
	                                           .serviceName("athena") // es - elastic search. use your service name
	                                           .httpMethodName("POST") //GET, PUT, POST, DELETE, etc...
	                                          .canonicalURI("/?Action=ListDatabases&Version=2017-05-18") //end point
	                                         //  .canonicalURI("/")
	                                          // .queryParametes(queryParams) //query parameters if any
	                                          // .queryParametes()
	                                           .awsHeaders(awsHeaders) //aws header parameters
	                                        //   .payload() // payload if any
	                                          // .payload("{\"CatalogName\": \"AwsDataCatalog\"}")
	                                           .debug() // turn on the debug mode
	                                           .build();` 

[debora-ito]

@hindos I see you are manually writing the HTTP request using AWSV4Auth, have you tried using the SDK Athena client? Is there any reason why you're not using the client?