SDK适用于 Java 2.x 的 Amazon Cognito 身份示例

以下代码示例向您展示了如何使用 AWS SDK for Java 2.x 与 Amazon Cognito Identity 配合使用来执行操作和实现常见场景。

操作是大型程序的代码摘录，必须在上下文中运行。您可以通过操作了解如何调用单个服务函数，还可以通过函数相关场景的上下文查看操作。

每个示例都包含一个指向完整源代码的链接，您可以在其中找到有关如何在上下文中设置和运行代码的说明。

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以下代码示例显示了如何使用CreateIdentityPool。

SDK适用于 Java 2.x

注意

还有更多相关信息 GitHub。查找完整示例，学习如何在 AWS 代码示例存储库中进行设置和运行。


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentity.CognitoIdentityClient;
import software.amazon.awssdk.services.cognitoidentity.model.CreateIdentityPoolRequest;
import software.amazon.awssdk.services.cognitoidentity.model.CreateIdentityPoolResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;

/**
 * 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
 */
public class CreateIdentityPool {
    public static void main(String[] args) {
        final String usage = """
                Usage:
                    <identityPoolName>\s

                Where:
                    identityPoolName - The name to give your identity pool.
                """;

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

        String identityPoolName = args[0];
        CognitoIdentityClient cognitoClient = CognitoIdentityClient.builder()
                .region(Region.US_EAST_1)
                .build();

        String identityPoolId = createIdPool(cognitoClient, identityPoolName);
        System.out.println("Unity pool ID " + identityPoolId);
        cognitoClient.close();
    }

    public static String createIdPool(CognitoIdentityClient cognitoClient, String identityPoolName) {
        try {
            CreateIdentityPoolRequest poolRequest = CreateIdentityPoolRequest.builder()
                    .allowUnauthenticatedIdentities(false)
                    .identityPoolName(identityPoolName)
                    .build();

            CreateIdentityPoolResponse response = cognitoClient.createIdentityPool(poolRequest);
            return response.identityPoolId();

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return "";
    }
}

有关API详细信息，请参阅 “AWS SDK for Java 2.x API参考 CreateIdentityPool” 中的。

以下代码示例显示了如何使用DeleteIdentityPool。

SDK适用于 Java 2.x

注意

还有更多相关信息 GitHub。查找完整示例，学习如何在 AWS 代码示例存储库中进行设置和运行。


import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
import software.amazon.awssdk.awscore.exception.AwsServiceException;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentity.CognitoIdentityClient;
import software.amazon.awssdk.services.cognitoidentity.model.DeleteIdentityPoolRequest;

/**
 * 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
 */
public class DeleteIdentityPool {

    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <identityPoolId>\s

                Where:
                    identityPoolId - The Id value of your identity pool.
                """;

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

        String identityPoold = args[0];
        CognitoIdentityClient cognitoIdClient = CognitoIdentityClient.builder()
                .region(Region.US_EAST_1)
                .credentialsProvider(ProfileCredentialsProvider.create())
                .build();

        deleteIdPool(cognitoIdClient, identityPoold);
        cognitoIdClient.close();
    }

    public static void deleteIdPool(CognitoIdentityClient cognitoIdClient, String identityPoold) {
        try {

            DeleteIdentityPoolRequest identityPoolRequest = DeleteIdentityPoolRequest.builder()
                    .identityPoolId(identityPoold)
                    .build();

            cognitoIdClient.deleteIdentityPool(identityPoolRequest);
            System.out.println("Done");

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

有关API详细信息，请参阅 “AWS SDK for Java 2.x API参考 DeleteIdentityPool” 中的。

以下代码示例显示了如何使用GetCredentialsForIdentity。

SDK适用于 Java 2.x

注意

还有更多相关信息 GitHub。查找完整示例，学习如何在 AWS 代码示例存储库中进行设置和运行。


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentity.CognitoIdentityClient;
import software.amazon.awssdk.services.cognitoidentity.model.GetCredentialsForIdentityRequest;
import software.amazon.awssdk.services.cognitoidentity.model.GetCredentialsForIdentityResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;

/**
 * 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
 */
public class GetIdentityCredentials {
    public static void main(String[] args) {

        final String usage = """

                Usage:
                    <identityId>\s

            Where:
                identityId - The Id of an existing identity in the format REGION:GUID.
            """;

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

        String identityId = args[0];
        CognitoIdentityClient cognitoClient = CognitoIdentityClient.builder()
                .region(Region.US_EAST_1)
                .build();

        getCredsForIdentity(cognitoClient, identityId);
        cognitoClient.close();
    }

    public static void getCredsForIdentity(CognitoIdentityClient cognitoClient, String identityId) {
        try {
            GetCredentialsForIdentityRequest getCredentialsForIdentityRequest = GetCredentialsForIdentityRequest
                    .builder()
                    .identityId(identityId)
                    .build();

            GetCredentialsForIdentityResponse response = cognitoClient
                    .getCredentialsForIdentity(getCredentialsForIdentityRequest);
            System.out.println(
                    "Identity ID " + response.identityId() + ", Access key ID " + response.credentials().accessKeyId());

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

有关API详细信息，请参阅 “AWS SDK for Java 2.x API参考 GetCredentialsForIdentity” 中的。

以下代码示例显示了如何使用ListIdentityPools。

SDK适用于 Java 2.x

注意

还有更多相关信息 GitHub。查找完整示例，学习如何在 AWS 代码示例存储库中进行设置和运行。


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentity.CognitoIdentityClient;
import software.amazon.awssdk.services.cognitoidentity.model.ListIdentityPoolsRequest;
import software.amazon.awssdk.services.cognitoidentity.model.ListIdentityPoolsResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;

/**
 * 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
 */
public class ListIdentityPools {
    public static void main(String[] args) {
        CognitoIdentityClient cognitoClient = CognitoIdentityClient.builder()
                .region(Region.US_EAST_1)
                .build();

        listIdPools(cognitoClient);
        cognitoClient.close();
    }

    public static void listIdPools(CognitoIdentityClient cognitoClient) {
        try {
            ListIdentityPoolsRequest poolsRequest = ListIdentityPoolsRequest.builder()
                    .maxResults(15)
                    .build();

            ListIdentityPoolsResponse response = cognitoClient.listIdentityPools(poolsRequest);
            response.identityPools().forEach(pool -> {
                System.out.println("Pool ID: " + pool.identityPoolId());
                System.out.println("Pool name: " + pool.identityPoolName());
            });

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

有关API详细信息，请参阅 “AWS SDK for Java 2.x API参考 ListIdentityPools” 中的。

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