文档 AWS SDK 示例 GitHub 存储库中还有更多 [S AWS DK 示例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。

# `DescribeApplications`与 AWS SDK 或 CLI 配合使用
<a name="elastic-beanstalk_example_elastic-beanstalk_DescribeApplications_section"></a>

以下代码示例演示如何使用 `DescribeApplications`。

------
#### [ CLI ]

**AWS CLI**  
**查看应用程序列表**  
以下命令检索有关当前区域中应用程序的信息：  

```
aws elasticbeanstalk describe-applications
```
输出：  

```
{
    "Applications": [
        {
            "ApplicationName": "ruby",
            "ConfigurationTemplates": [],
            "DateUpdated": "2015-08-13T21:05:44.376Z",
            "Versions": [
                "Sample Application"
            ],
            "DateCreated": "2015-08-13T21:05:44.376Z"
        },
        {
            "ApplicationName": "pythonsample",
            "Description": "Application created from the EB CLI using \"eb init\"",
            "Versions": [
                "Sample Application"
            ],
            "DateCreated": "2015-08-13T19:05:43.637Z",
            "ConfigurationTemplates": [],
            "DateUpdated": "2015-08-13T19:05:43.637Z"
        },
        {
            "ApplicationName": "nodejs-example",
            "ConfigurationTemplates": [],
            "DateUpdated": "2015-08-06T17:50:02.486Z",
            "Versions": [
                "add elasticache",
                "First Release"
            ],
            "DateCreated": "2015-08-06T17:50:02.486Z"
        }
    ]
}
```
+  有关 API 的详细信息，请参阅*AWS CLI 命令参考[DescribeApplications](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/elasticbeanstalk/describe-applications.html)*中的。

------
#### [ Ruby ]

**适用于 Ruby 的 SDK**  
 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/elasticbeanstalk#code-examples)中查找完整示例，了解如何进行设置和运行。

```
# Class to manage Elastic Beanstalk applications
class ElasticBeanstalkManager
  def initialize(eb_client, logger: Logger.new($stdout))
    @eb_client = eb_client
    @logger = logger
  end

  # Lists applications and their environments
  def list_applications
    @eb_client.describe_applications.applications.each do |application|
      log_application_details(application)
      list_environments(application.application_name)
    end
  rescue Aws::ElasticBeanstalk::Errors::ServiceError => e
    @logger.error("Elastic Beanstalk Service Error: #{e.message}")
  end

  private

  # Logs application details
  def log_application_details(application)
    @logger.info("Name:        #{application.application_name}")
    @logger.info("Description: #{application.description}")
  end

  # Lists and logs details of environments for a given application
  def list_environments(application_name)
    @eb_client.describe_environments(application_name: application_name).environments.each do |env|
      @logger.info("  Environment:  #{env.environment_name}")
      @logger.info("    URL:        #{env.cname}")
      @logger.info("    Health:     #{env.health}")
    end
  rescue Aws::ElasticBeanstalk::Errors::ServiceError => e
    @logger.error("Error listing environments for application #{application_name}: #{e.message}")
  end
end
```
+  有关 API 的详细信息，请参阅 *适用于 Ruby 的 AWS SDK API 参考[DescribeApplications](https://docs.aws.amazon.com/goto/SdkForRubyV3/elastic-beanstalk-2010-12-01/DescribeApplications)*中的。

------