AWS SDKを使用してAWS Elastic Searchからインデックスを取得する際の403 forbiddenエラー

AWS SDKを使用してエラスティック検索に接続しています。私はhttps://docs.aws.amazon.com/elasticsearch-service/latest/developerguide/es-indexing.htmlに従っています

このトピックの他の質問は、許可の問題やelasticsearchへの書き込み中の問題のようなものでした。私にとって、書き込みはうまく機能していますが、読み取りだけでエラーが発生しています

POSTメソッドはすべて正常に機能し、インデックスを追加しています。同じ方法で検索のGETリクエストを作成しています

  public void getIndexedRecords(String index,String type,String id,String documentJSON){

        try {
            String endpoint = host +"/" +index+"/_search" ;
            // Builds the request. We need an AWS service, URI, HTTP method, and request
            // body (in this case, JSON).

            Request<?> request = new DefaultRequest<Void>(service);
            request.setEndpoint(new URI(endpoint));
            request.setHttpMethod(HttpMethodName.GET);
            request.setContent(new ByteArrayInputStream(documentJSON.getBytes()));

            // Retrieves our credentials from the computer. For more information on where
            // this class looks for credentials, see
            // http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/auth/DefaultAWSCredentialsProviderChain.html.

            String accessKey = CommonUtils.getCommonProperty("accessKey", "");
            String secretKey = CommonUtils.getCommonProperty("secretKey", "");;
            AWSCredentials creds = new BasicAWSCredentials(accessKey, secretKey);

            // Signs the request using our region, service, and credentials. AWS4Signer
            // modifies the original request rather than returning a new request.

            AWS4Signer signer = new AWS4Signer();
            signer.setRegionName(region);
            signer.setServiceName(service);
            signer.sign(request, creds);
            request.addHeader("Content-Type", "application/json");

            // Creates and configures the HTTP client, creates the error and response
            // handlers, and finally executes the request.

            ClientConfiguration config = new ClientConfiguration();
            config.setProtocol(Protocol.HTTPS);
            AmazonHttpClient client = new AmazonHttpClient(config);
            System.out.println(client);
            ExecutionContext context = new ExecutionContext(true);
            ESAWSErrorHandler errorHandler = new ESAWSErrorHandler();
            ESAWSResponseHandler<Void> responseHandler = new ESAWSResponseHandler<Void>();
            client.requestExecutionBuilder().executionContext(context).errorResponseHandler(errorHandler).request(request)
                    .execute(responseHandler);
        } catch (Exception e) {
            e.printStackTrace();
        }


    }

しかし、403禁止エラーが表示されます。エンドポイントURLでCurl XGETを実行すると、結果が得られます。ここで何が悪いのですか？

com.amazonaws.http.AmazonzonClients.http.AmazonHttpClient $ RequestExecutor.handleErrorResponse（AmazonHttpClient.java:1588）のcom.amazonawsでcom.amazonaws.AmazonServiceException：（Service：null; Status Code：403; Error Code：Forbidden; Request ID：null）。 http.AmazonHttpClient $ RequestExecutor.executeOneRequest（AmazonHttpClient.java:1258）at com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeHelper（AmazonHttpClient.java:1030）at com.amazonaws.http.AmazonHttpClient $ RequestExecutor.doExecute（AmazonHttpClient.java： 742）com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeWithTimer（AmazonHttpClient.java:716）at com.amazonaws.http.AmazonHttpClient $ RequestExecutor.execute（AmazonHttpClient.java:699）at com.amazonaws.http.AmazonHttpClient $ RequestExecutor .access $ 500（AmazonHttpClient.java:667）at com.amazonaws.http.AmazonHttpClient $ RequestExecutionBuilderImpl。実行（AmazonHttpClient.java:649）