本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 使用 Java AWS 開發套件取得 Secrets Manager 秘密值
<a name="retrieving-secrets-java-sdk"></a>

在應用程式中，您可以透過在任何 AWS SDKs `BatchGetSecretValue`中呼叫 `GetSecretValue`或 來擷取秘密。不過，建議您使用用戶端快取來快取您的秘密值。快取秘密可提高速度並降低成本。
+ 如果將資料庫憑證存放在秘密中，則請使用 [Secrets Manager SQL 連線驅動程式](retrieving-secrets_jdbc.md)，以使用秘密中的憑證連線至資料庫。
+ 對於其他類型的秘密，請使用 [Secrets Manager Java 型快取元件，](retrieving-secrets_cache-java.md)或使用 [https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/secretsmanager/model/GetSecretValueResult.html](https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/secretsmanager/model/GetSecretValueResult.html)或 直接呼叫 SDK[https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/secretsmanager/model/BatchGetSecretValueResult.html](https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/secretsmanager/model/BatchGetSecretValueResult.html)。

下列程式碼範例示範如何使用 `GetSecretValue`。

**必要許可：**`secretsmanager:GetSecretValue`

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.secretsmanager.SecretsManagerClient;
import software.amazon.awssdk.services.secretsmanager.model.GetSecretValueRequest;
import software.amazon.awssdk.services.secretsmanager.model.GetSecretValueResponse;
import software.amazon.awssdk.services.secretsmanager.model.SecretsManagerException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 *
 * We recommend that you cache your secret values by using client-side caching.
 *
 * Caching secrets improves speed and reduces your costs. For more information,
 * see the following documentation topic:
 *
 * https://docs.aws.amazon.com/secretsmanager/latest/userguide/retrieving-secrets.html
 */
public class GetSecretValue {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <secretName>\s

                Where:
                    secretName - The name of the secret (for example, tutorials/MyFirstSecret).\s
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String secretName = args[0];
        Region region = Region.US_EAST_1;
        SecretsManagerClient secretsClient = SecretsManagerClient.builder()
                .region(region)
                .build();

        getValue(secretsClient, secretName);
        secretsClient.close();
    }

    public static void getValue(SecretsManagerClient secretsClient, String secretName) {
        try {
            GetSecretValueRequest valueRequest = GetSecretValueRequest.builder()
                    .secretId(secretName)
                    .build();

            GetSecretValueResponse valueResponse = secretsClient.getSecretValue(valueRequest);
            String secret = valueResponse.secretString();
            System.out.println(secret);

        } catch (SecretsManagerException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```