适用于 Java 的 Amazon SDK 1.x于2025年 end-of-support 12月31日达到。我们建议您迁移到 [Amazon SDK for Java 2.x](https://docs.amazonaws.cn/sdk-for-java/latest/developer-guide/home.html) 以继续获得新功能、可用性改进和安全更新。

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。

# 使用区域和可用区
<a name="examples-ec2-regions-zones"></a>

## 描述区域
<a name="describe-regions"></a>

要列出账户可用的区域，请调用 AmazonEC2Client 的 `describeRegions` 方法。该方法返回 [DescribeRegionsResult](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/DescribeRegionsResult.html)。调用返回对象的 `getRegions` 方法，获取表示各个区域的 [Region](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/Region.html) 对象的列表。

 **导入**。

```
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.DescribeRegionsResult;
import com.amazonaws.services.ec2.model.Region;
import com.amazonaws.services.ec2.model.AvailabilityZone;
import com.amazonaws.services.ec2.model.DescribeAvailabilityZonesResult;
```

 **代码** 

```
DescribeRegionsResult regions_response = ec2.describeRegions();

for(Region region : regions_response.getRegions()) {
    System.out.printf(
        "Found region %s " +
        "with endpoint %s",
        region.getRegionName(),
        region.getEndpoint());
}
```

请参阅[完整示例](https://github.com/awsdocs/aws-doc-sdk-examples/blob/master/java/example_code/ec2/src/main/java/aws/example/ec2/DescribeRegionsAndZones.java)。

## 描述可用区
<a name="describe-availability-zones"></a>

要列出账户可用的每个可用区，请调用 AmazonEC2Client 的 `describeAvailabilityZones` 方法。该方法返回 [DescribeAvailabilityZonesResult](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/DescribeAvailabilityZonesResult.html)。调用其 `getAvailabilityZones` 方法，获取表示各个可用区的 [AvailabilityZone](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/AvailabilityZone.html) 对象的列表。

 **导入**。

```
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.DescribeRegionsResult;
import com.amazonaws.services.ec2.model.Region;
import com.amazonaws.services.ec2.model.AvailabilityZone;
import com.amazonaws.services.ec2.model.DescribeAvailabilityZonesResult;
```

 **代码** 

```
DescribeAvailabilityZonesResult zones_response =
    ec2.describeAvailabilityZones();

for(AvailabilityZone zone : zones_response.getAvailabilityZones()) {
    System.out.printf(
        "Found availability zone %s " +
        "with status %s " +
        "in region %s",
        zone.getZoneName(),
        zone.getState(),
        zone.getRegionName());
}
```

请参阅[完整示例](https://github.com/awsdocs/aws-doc-sdk-examples/blob/master/java/example_code/ec2/src/main/java/aws/example/ec2/DescribeRegionsAndZones.java)。

## 描述账户
<a name="describe-accounts"></a>

要描述您的账户，请调用 AmazonEC2Client 的 `describeAccountAttributes` 方法。此方法返回 [DescribeAccountAttributesResult](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/DescribeAccountAttributesResult.html) 对象。调用此对象的 `getAccountAttributes` 方法以获取 [AccountAttribute](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/AccountAttribute.html) 对象的列表。您可以遍历该列表来检索 [AccountAttribute](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/AccountAttribute.html) 对象。

您可以通过调用 [AccountAttribute](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/AccountAttribute.html) 对象的 `getAttributeValues` 方法来获取您账户的属性值。此方法返回 [AccountAttributeValue](https://docs.amazonaws.cn/sdk-for-java/v1/reference/com/amazonaws/services/ec2/model/AccountAttributeValue.html) 对象的列表。您可以遍历第二个列表来显示属性的值（请参阅以下代码示例）。

 **导入**。

```
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.AccountAttributeValue;
import com.amazonaws.services.ec2.model.DescribeAccountAttributesResult;
import com.amazonaws.services.ec2.model.AccountAttribute;
import java.util.List;
import java.util.ListIterator;
```

 **代码** 

```
AmazonEC2 ec2 = AmazonEC2ClientBuilder.defaultClient();

try{
    DescribeAccountAttributesResult accountResults = ec2.describeAccountAttributes();
    List<AccountAttribute> accountList = accountResults.getAccountAttributes();

    for (ListIterator iter = accountList.listIterator(); iter.hasNext(); ) {

        AccountAttribute attribute = (AccountAttribute) iter.next();
        System.out.print("\n The name of the attribute is "+attribute.getAttributeName());
        List<AccountAttributeValue> values = attribute.getAttributeValues();

         //iterate through the attribute values
        for (ListIterator iterVals = values.listIterator(); iterVals.hasNext(); ) {
            AccountAttributeValue myValue = (AccountAttributeValue) iterVals.next();
            System.out.print("\n The value of the attribute is "+myValue.getAttributeValue());
        }
    }
    System.out.print("Done");
}
catch (Exception e)
{
    e.getStackTrace();
}
```

请参阅 GitHub 上的[完整示例](https://github.com/awsdocs/aws-doc-sdk-examples/blob/master/java/example_code/ec2/src/main/java/aws/example/ec2/DescribeAccount.java)。

## 更多信息
<a name="more-information"></a>
+  《Amazon EC2 用户指南（适用于 Linux 实例）》中的[区域和可用区](https://docs.amazonaws.cn/AWSEC2/latest/UserGuide/using-regions-availability-zones.html)
+  《Amazon EC2 API Reference》中的 [DescribeRegions](https://docs.amazonaws.cn/AWSEC2/latest/APIReference/API_DescribeRegions.html)
+  《Amazon EC2 API Reference》中的 [DescribeAvailabilityZones](https://docs.amazonaws.cn/AWSEC2/latest/APIReference/API_DescribeAvailabilityZones.html)