调用 Amazon Rekognition Custom Labels 操作

运行以下代码，确认您可以调用 Amazon Rekognition Custom Labels API。该代码列出了您 AWS 账户中当前 AWS 区域中的项目。如果您之前未创建项目，则响应为空，但确实会确认您可以调用 DescribeProjects 操作。

通常，调用示例函数需要 AWS SDK Rekognition 客户端和任何其他所需的参数。AWS SDK 客户端会在主函数中声明。

如果该代码失败，请检查所用的用户是否具有正确的权限。另请检查您用作亚马逊 Rekognition 自定义标签的 AWS 地区并非在所有地区都可用。 AWS

调用 Amazon Rekognition Custom Labels 操作

1. 如果您尚未这样做，请安装和配置和 AWS SDK。 AWS CLI 有关更多信息，请参阅 步骤 4：设置 AWS CLI 和 AWS 软件开发工具包。

2. 使用以下示例代码查看您的项目。

   CLI

   使用 describe-projects 命令列出您账户中的项目。

   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);
           }
   
       }
   
   }