呼叫 Amazon Rekognition 自訂標籤操作

執行下列程式碼，以確認您可以撥打 Amazon Rekognition 自訂標籤的呼叫。API該代碼列出了您的項目 AWS 帳戶，在目前 AWS 地區。如果您之前尚未建立專案，則回應為空白，但確認您可以呼叫該 DescribeProjects操作。

一般而言，呼叫範例函數需要 AWS SDK Rekognition 用戶端和任何其他必要的參數。AWSSDK客戶端在 main 函數中聲明。

如果程式碼失敗，請檢查您使用的使用者是否擁有正確的權限。還要檢查 AWS 並非所有區域都提供您作為 Amazon Rekognition 自訂標籤使用的區域 AWS 地區。

若要呼叫 Amazon Rekognition 自訂標籤操作

1. 如果您尚未這樣做，請安裝並配置 AWS CLI 和 AWS SDKs。如需詳細資訊，請參閱步驟 4：設定 AWS CLI 以及 AWS SDKs。

2. 使用以下的範例程式碼來檢視您的專案。

   CLI

   使用 describe-projects 指令列出您帳戶中的專案。

   aws rekognition describe-projects \
   --profile custom-labels-access
    

   Python

   
   # Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
   # SPDX-License-Identifier: Apache-2.0
   
   """
   This example shows how to describe your Amazon Rekognition Custom Labels projects.
   If you haven't previously created a project in the current AWS Region,
   the response is an empty list, but does confirm that you can call an
   Amazon Rekognition Custom Labels operation.
   """
   from botocore.exceptions import ClientError
   import boto3
   
   def describe_projects(rekognition_client):
       """
       Lists information about the projects that are in in your AWS account
       and in the current AWS Region.
   
       : param rekognition_client: A Boto3 Rekognition client.
       """
       try:
           response = rekognition_client.describe_projects()
           for project in response["ProjectDescriptions"]:
               print("Status: " + project["Status"])
               print("ARN: " + project["ProjectArn"])
               print()
           print("Done!")
       except ClientError as err:
           print(f"Couldn't describe projects. \n{err}")
           raise
   
   
   def main():
       """
       Entrypoint for script.
       """
   
       session = boto3.Session(profile_name='custom-labels-access')
       rekognition_client = session.client("rekognition")
   
       describe_projects(rekognition_client)
   
   
   if __name__ == "__main__":
       main()
   

   Java V2

   /*
      Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
      SPDX-License-Identifier: Apache-2.0
   */
   
   package com.example.rekognition;
   
   import java.util.ArrayList;
   import java.util.List;
   import java.util.logging.Level;
   import java.util.logging.Logger;
   
   import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
   import software.amazon.awssdk.regions.Region;
   import software.amazon.awssdk.services.rekognition.RekognitionClient;
   import software.amazon.awssdk.services.rekognition.model.DatasetMetadata;
   import software.amazon.awssdk.services.rekognition.model.DescribeProjectsRequest;
   import software.amazon.awssdk.services.rekognition.model.DescribeProjectsResponse;
   import software.amazon.awssdk.services.rekognition.model.ProjectDescription;
   import software.amazon.awssdk.services.rekognition.model.RekognitionException;
   
   public class Hello {
   
       public static final Logger logger = Logger.getLogger(Hello.class.getName());
   
       public static void describeMyProjects(RekognitionClient rekClient) {
   
           DescribeProjectsRequest descProjects = null;
   
           // If a single project name is supplied, build projectNames argument
   
           List<String> projectNames = new ArrayList<String>();
   
   
           descProjects = DescribeProjectsRequest.builder().build();
   
           // Display useful information for each project.
   
           DescribeProjectsResponse resp = rekClient.describeProjects(descProjects);
   
           for (ProjectDescription projectDescription : resp.projectDescriptions()) {
   
               System.out.println("ARN: " + projectDescription.projectArn());
               System.out.println("Status: " + projectDescription.statusAsString());
               if (projectDescription.hasDatasets()) {
                   for (DatasetMetadata datasetDescription : projectDescription.datasets()) {
                       System.out.println("\tdataset Type: " + datasetDescription.datasetTypeAsString());
                       System.out.println("\tdataset ARN: " + datasetDescription.datasetArn());
                       System.out.println("\tdataset Status: " + datasetDescription.statusAsString());
                   }
               }
               System.out.println();
           }
   
       }
   
       public static void main(String[] args) {
   
           try {
   
               // Get the Rekognition client
               RekognitionClient rekClient = RekognitionClient.builder()
                   .credentialsProvider(ProfileCredentialsProvider.create("custom-labels-access"))
                   .region(Region.US_WEST_2)
                   .build();
               
               // Describe projects
   
               describeMyProjects(rekClient);
   
               rekClient.close();
   
           } catch (RekognitionException rekError) {
               logger.log(Level.SEVERE, "Rekognition client error: {0}", rekError.getMessage());
               System.exit(1);
           }
   
       }
   
   }