기계 번역으로 제공되는 번역입니다. 제공된 번역과 원본 영어의 내용이 상충하는 경우에는 영어 버전이 우선합니다.

# Java 2.x용 SDK를 사용하는 Amazon Cognito 자격 증명 공급자 예제
<a name="java_cognito-identity-provider_code_examples"></a>

다음 코드 예제에서는 Amazon Cognito 자격 증명 공급자와 AWS SDK for Java 2.x 함께를 사용하여 작업을 수행하고 일반적인 시나리오를 구현하는 방법을 보여줍니다.

*작업*은 대규모 프로그램에서 발췌한 코드이며 컨텍스트에 맞춰 실행해야 합니다. 작업은 개별 서비스 함수를 직접 호출하는 방법을 보여주며, 관련 시나리오의 컨텍스트에 맞는 작업을 볼 수 있습니다.

*시나리오*는 동일한 서비스 내에서 또는 다른 AWS 서비스와 결합된 상태에서 여러 함수를 직접적으로 호출하여 특정 태스크를 수행하는 방법을 보여주는 코드 예제입니다.

각 예시에는 전체 소스 코드에 대한 링크가 포함되어 있으며, 여기에서 컨텍스트에 맞춰 코드를 설정하고 실행하는 방법에 대한 지침을 찾을 수 있습니다.

**Topics**
+ [시작하기](#get_started)
+ [작업](#actions)
+ [시나리오](#scenarios)

## 시작하기
<a name="get_started"></a>

### Hello Amazon Cognito
<a name="cognito-identity-provider_Hello_java_topic"></a>

다음 코드 예시에서는 Amazon Cognito 사용을 시작하는 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUserPoolsResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUserPoolsRequest;

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

        listAllUserPools(cognitoClient);
        cognitoClient.close();
    }

    public static void listAllUserPools(CognitoIdentityProviderClient cognitoClient) {
        try {
            ListUserPoolsRequest request = ListUserPoolsRequest.builder()
                    .maxResults(10)
                    .build();

            ListUserPoolsResponse response = cognitoClient.listUserPools(request);
            response.userPools().forEach(userpool -> {
                System.out.println("User pool " + userpool.name() + ", User ID " + userpool.id());
            });

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [ListFunctions](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ListUserPools)를 참조하세요.

## 작업
<a name="actions"></a>

### `AdminGetUser`
<a name="cognito-identity-provider_AdminGetUser_java_topic"></a>

다음 코드 예시는 `AdminGetUser`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    public static void getAdminUser(CognitoIdentityProviderClient identityProviderClient, String userName,
            String poolId) {
        try {
            AdminGetUserRequest userRequest = AdminGetUserRequest.builder()
                    .username(userName)
                    .userPoolId(poolId)
                    .build();

            AdminGetUserResponse response = identityProviderClient.adminGetUser(userRequest);
            System.out.println("User status " + response.userStatusAsString());

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [AdminGetUser](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AdminGetUser)를 참조하세요.

### `AdminInitiateAuth`
<a name="cognito-identity-provider_AdminInitiateAuth_java_topic"></a>

다음 코드 예시는 `AdminInitiateAuth`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    public static AdminInitiateAuthResponse initiateAuth(CognitoIdentityProviderClient identityProviderClient,
            String clientId, String userName, String password, String userPoolId) {
        try {
            Map<String, String> authParameters = new HashMap<>();
            authParameters.put("USERNAME", userName);
            authParameters.put("PASSWORD", password);

            AdminInitiateAuthRequest authRequest = AdminInitiateAuthRequest.builder()
                    .clientId(clientId)
                    .userPoolId(userPoolId)
                    .authParameters(authParameters)
                    .authFlow(AuthFlowType.ADMIN_USER_PASSWORD_AUTH)
                    .build();

            AdminInitiateAuthResponse response = identityProviderClient.adminInitiateAuth(authRequest);
            System.out.println("Result Challenge is : " + response.challengeName());
            return response;

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

        return null;
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [AdminInitiateAuth](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AdminInitiateAuth)를 참조하세요.

### `AdminRespondToAuthChallenge`
<a name="cognito-identity-provider_AdminRespondToAuthChallenge_java_topic"></a>

다음 코드 예시는 `AdminRespondToAuthChallenge`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    // Respond to an authentication challenge.
    public static void adminRespondToAuthChallenge(CognitoIdentityProviderClient identityProviderClient,
            String userName, String clientId, String mfaCode, String session) {
        System.out.println("SOFTWARE_TOKEN_MFA challenge is generated");
        Map<String, String> challengeResponses = new HashMap<>();

        challengeResponses.put("USERNAME", userName);
        challengeResponses.put("SOFTWARE_TOKEN_MFA_CODE", mfaCode);

        AdminRespondToAuthChallengeRequest respondToAuthChallengeRequest = AdminRespondToAuthChallengeRequest.builder()
                .challengeName(ChallengeNameType.SOFTWARE_TOKEN_MFA)
                .clientId(clientId)
                .challengeResponses(challengeResponses)
                .session(session)
                .build();

        AdminRespondToAuthChallengeResponse respondToAuthChallengeResult = identityProviderClient
                .adminRespondToAuthChallenge(respondToAuthChallengeRequest);
        System.out.println("respondToAuthChallengeResult.getAuthenticationResult()"
                + respondToAuthChallengeResult.authenticationResult());
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [AdminRespondToAuthChallenge](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AdminRespondToAuthChallenge)를 참조하세요.

### `AssociateSoftwareToken`
<a name="cognito-identity-provider_AssociateSoftwareToken_java_topic"></a>

다음 코드 예시는 `AssociateSoftwareToken`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    public static String getSecretForAppMFA(CognitoIdentityProviderClient identityProviderClient, String session) {
        AssociateSoftwareTokenRequest softwareTokenRequest = AssociateSoftwareTokenRequest.builder()
                .session(session)
                .build();

        AssociateSoftwareTokenResponse tokenResponse = identityProviderClient
                .associateSoftwareToken(softwareTokenRequest);
        String secretCode = tokenResponse.secretCode();
        System.out.println("Enter this token into Google Authenticator");
        System.out.println(secretCode);
        return tokenResponse.session();
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [AssociateSoftwareToken](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AssociateSoftwareToken)을 참조하세요.

### `ConfirmSignUp`
<a name="cognito-identity-provider_ConfirmSignUp_java_topic"></a>

다음 코드 예시는 `ConfirmSignUp`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    public static void confirmSignUp(CognitoIdentityProviderClient identityProviderClient, String clientId, String code,
            String userName) {
        try {
            ConfirmSignUpRequest signUpRequest = ConfirmSignUpRequest.builder()
                    .clientId(clientId)
                    .confirmationCode(code)
                    .username(userName)
                    .build();

            identityProviderClient.confirmSignUp(signUpRequest);
            System.out.println(userName + " was confirmed");

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [ConfirmSignUp](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ConfirmSignUp)을 참조하세요.

### `CreateUserPool`
<a name="cognito-identity-provider_CreateUserPool_java_topic"></a>

다음 코드 예시는 `CreateUserPool`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CreateUserPoolRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CreateUserPoolResponse;

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

        final String usage = """

                Usage:
                    <userPoolName>\s

                Where:
                    userPoolName - The name to give your user pool when it's created.
                """;

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

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

        String id = createPool(cognitoClient, userPoolName);
        System.out.println("User pool ID: " + id);
        cognitoClient.close();
    }

    public static String createPool(CognitoIdentityProviderClient cognitoClient, String userPoolName) {
        try {
            CreateUserPoolRequest request = CreateUserPoolRequest.builder()
                    .poolName(userPoolName)
                    .build();

            CreateUserPoolResponse response = cognitoClient.createUserPool(request);
            return response.userPool().id();

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return "";
    }
}
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [CreateUserPool](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/CreateUserPool) 섹션을 참조하세요.

### `CreateUserPoolClient`
<a name="cognito-identity-provider_CreateUserPoolClient_java_topic"></a>

다음 코드 예시는 `CreateUserPoolClient`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CreateUserPoolClientRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CreateUserPoolClientResponse;

/**
 * A user pool client app is an application that authenticates with Amazon
 * Cognito user pools.
 * When you create a user pool, you can configure app clients that allow mobile
 * or web applications
 * to call API operations to authenticate users, manage user attributes and
 * profiles,
 * and implement sign-up and sign-in flows.
 *
 * 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 CreateUserPoolClient {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <clientName> <userPoolId>\s

                Where:
                    clientName - The name for the user pool client to create.
                    userPoolId - The ID for the user pool.
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String clientName = args[0];
        String userPoolId = args[1];
        CognitoIdentityProviderClient cognitoClient = CognitoIdentityProviderClient.builder()
                .region(Region.US_EAST_1)
                .build();

        createPoolClient(cognitoClient, clientName, userPoolId);
        cognitoClient.close();
    }

    public static void createPoolClient(CognitoIdentityProviderClient cognitoClient, String clientName,
            String userPoolId) {
        try {
            CreateUserPoolClientRequest request = CreateUserPoolClientRequest.builder()
                    .clientName(clientName)
                    .userPoolId(userPoolId)
                    .build();

            CreateUserPoolClientResponse response = cognitoClient.createUserPoolClient(request);
            System.out.println("User pool " + response.userPoolClient().clientName() + " created. ID: "
                    + response.userPoolClient().clientId());

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [CreateUserPoolClient](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/CreateUserPoolClient) 섹션을 참조하세요.

### `ListUserPools`
<a name="cognito-identity-provider_ListUserPools_java_topic"></a>

다음 코드 예시는 `ListUserPools`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUserPoolsResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUserPoolsRequest;

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

        listAllUserPools(cognitoClient);
        cognitoClient.close();
    }

    public static void listAllUserPools(CognitoIdentityProviderClient cognitoClient) {
        try {
            ListUserPoolsRequest request = ListUserPoolsRequest.builder()
                    .maxResults(10)
                    .build();

            ListUserPoolsResponse response = cognitoClient.listUserPools(request);
            response.userPools().forEach(userpool -> {
                System.out.println("User pool " + userpool.name() + ", User ID " + userpool.id());
            });

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [ListFunctions](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ListUserPools)를 참조하세요.

### `ListUsers`
<a name="cognito-identity-provider_ListUsers_java_topic"></a>

다음 코드 예시는 `ListUsers`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUsersRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUsersResponse;

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

        final String usage = """

                Usage:
                    <userPoolId>\s

                Where:
                    userPoolId - The ID given to your user pool when it's created.
                """;

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

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

        listAllUsers(cognitoClient, userPoolId);
        listUsersFilter(cognitoClient, userPoolId);
        cognitoClient.close();
    }

    public static void listAllUsers(CognitoIdentityProviderClient cognitoClient, String userPoolId) {
        try {
            ListUsersRequest usersRequest = ListUsersRequest.builder()
                    .userPoolId(userPoolId)
                    .build();

            ListUsersResponse response = cognitoClient.listUsers(usersRequest);
            response.users().forEach(user -> {
                System.out.println("User " + user.username() + " Status " + user.userStatus() + " Created "
                        + user.userCreateDate());
            });

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

    // Shows how to list users by using a filter.
    public static void listUsersFilter(CognitoIdentityProviderClient cognitoClient, String userPoolId) {

        try {
            String filter = "email = \"tblue@noserver.com\"";
            ListUsersRequest usersRequest = ListUsersRequest.builder()
                    .userPoolId(userPoolId)
                    .filter(filter)
                    .build();

            ListUsersResponse response = cognitoClient.listUsers(usersRequest);
            response.users().forEach(user -> {
                System.out.println("User with filter applied " + user.username() + " Status " + user.userStatus()
                        + " Created " + user.userCreateDate());
            });

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [ListUsers](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ListUsers)를 참조하세요.

### `ResendConfirmationCode`
<a name="cognito-identity-provider_ResendConfirmationCode_java_topic"></a>

다음 코드 예시는 `ResendConfirmationCode`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    public static void resendConfirmationCode(CognitoIdentityProviderClient identityProviderClient, String clientId,
            String userName) {
        try {
            ResendConfirmationCodeRequest codeRequest = ResendConfirmationCodeRequest.builder()
                    .clientId(clientId)
                    .username(userName)
                    .build();

            ResendConfirmationCodeResponse response = identityProviderClient.resendConfirmationCode(codeRequest);
            System.out.println("Method of delivery is " + response.codeDeliveryDetails().deliveryMediumAsString());

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [ResendConfirmationCode](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ResendConfirmationCode)를 참조하세요.

### `SignUp`
<a name="cognito-identity-provider_SignUp_java_topic"></a>

다음 코드 예시는 `SignUp`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    public static void signUp(CognitoIdentityProviderClient identityProviderClient, String clientId, String userName,
            String password, String email) {
        AttributeType userAttrs = AttributeType.builder()
                .name("email")
                .value(email)
                .build();

        List<AttributeType> userAttrsList = new ArrayList<>();
        userAttrsList.add(userAttrs);
        try {
            SignUpRequest signUpRequest = SignUpRequest.builder()
                    .userAttributes(userAttrsList)
                    .username(userName)
                    .clientId(clientId)
                    .password(password)
                    .build();

            identityProviderClient.signUp(signUpRequest);
            System.out.println("User has been signed up ");

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [SignUp](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/SignUp)를 참조하세요.

### `VerifySoftwareToken`
<a name="cognito-identity-provider_VerifySoftwareToken_java_topic"></a>

다음 코드 예시는 `VerifySoftwareToken`의 사용 방법을 보여줍니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예를 찾고 설정 및 실행하는 방법을 배워보세요.

```
    // Verify the TOTP and register for MFA.
    public static void verifyTOTP(CognitoIdentityProviderClient identityProviderClient, String session, String code) {
        try {
            VerifySoftwareTokenRequest tokenRequest = VerifySoftwareTokenRequest.builder()
                    .userCode(code)
                    .session(session)
                    .build();

            VerifySoftwareTokenResponse verifyResponse = identityProviderClient.verifySoftwareToken(tokenRequest);
            System.out.println("The status of the token is " + verifyResponse.statusAsString());

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 [VerifySoftwareToken](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/VerifySoftwareToken)을 참조하세요.

## 시나리오
<a name="scenarios"></a>

### MFA가 필요한 사용자 풀에 사용자 가입시키기
<a name="cognito-identity-provider_Scenario_SignUpUserWithMfa_java_topic"></a>

다음 코드 예제에서는 다음과 같은 작업을 수행하는 방법을 보여줍니다.
+ 사용자 이름, 암호 및 이메일 주소로 사용자를 가입시키고 확인합니다.
+ MFA 애플리케이션을 사용자와 연결하여 다중 인증을 설정합니다.
+ 암호와 MFA 코드를 사용하여 로그인합니다.

**SDK for Java 2.x**  
 GitHub에 더 많은 내용이 있습니다. [AWS 코드 예제 리포지토리](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cognito#code-examples)에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AdminGetUserRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AdminGetUserResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AdminInitiateAuthRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AdminInitiateAuthResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AdminRespondToAuthChallengeRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AdminRespondToAuthChallengeResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AssociateSoftwareTokenRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AssociateSoftwareTokenResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AttributeType;
import software.amazon.awssdk.services.cognitoidentityprovider.model.AuthFlowType;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ChallengeNameType;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ConfirmSignUpRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ResendConfirmationCodeRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ResendConfirmationCodeResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.SignUpRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.VerifySoftwareTokenRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.VerifySoftwareTokenResponse;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 *
 * TIP: To set up the required user pool, run the AWS Cloud Development Kit (AWS
 * CDK) script provided in this GitHub repo at
 * resources/cdk/cognito_scenario_user_pool_with_mfa.
 *
 * This code example performs the following operations:
 *
 * 1. Invokes the signUp method to sign up a user.
 * 2. Invokes the adminGetUser method to get the user's confirmation status.
 * 3. Invokes the ResendConfirmationCode method if the user requested another
 * code.
 * 4. Invokes the confirmSignUp method.
 * 5. Invokes the AdminInitiateAuth to sign in. This results in being prompted
 * to set up TOTP (time-based one-time password). (The response is
 * “ChallengeName”: “MFA_SETUP”).
 * 6. Invokes the AssociateSoftwareToken method to generate a TOTP MFA private
 * key. This can be used with Google Authenticator.
 * 7. Invokes the VerifySoftwareToken method to verify the TOTP and register for
 * MFA.
 * 8. Invokes the AdminInitiateAuth to sign in again. This results in being
 * prompted to submit a TOTP (Response: “ChallengeName”: “SOFTWARE_TOKEN_MFA”).
 * 9. Invokes the AdminRespondToAuthChallenge to get back a token.
 */

public class CognitoMVP {
    public static final String DASHES = new String(new char[80]).replace("\0", "-");

    public static void main(String[] args) throws NoSuchAlgorithmException, InvalidKeyException {
        final String usage = """

                Usage:
                    <clientId> <poolId>

                Where:
                    clientId - The app client Id value that you can get from the AWS CDK script.
                    poolId - The pool Id that you can get from the AWS CDK script.\s
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String clientId = args[0];
        String poolId = args[1];
        CognitoIdentityProviderClient identityProviderClient = CognitoIdentityProviderClient.builder()
                .region(Region.US_EAST_1)
                .build();

        System.out.println(DASHES);
        System.out.println("Welcome to the Amazon Cognito example scenario.");
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("*** Enter your user name");
        Scanner in = new Scanner(System.in);
        String userName = in.nextLine();

        System.out.println("*** Enter your password");
        String password = in.nextLine();

        System.out.println("*** Enter your email");
        String email = in.nextLine();

        System.out.println("1. Signing up " + userName);
        signUp(identityProviderClient, clientId, userName, password, email);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("2. Getting " + userName + " in the user pool");
        getAdminUser(identityProviderClient, userName, poolId);

        System.out
                .println("*** Conformation code sent to " + userName + ". Would you like to send a new code? (Yes/No)");
        System.out.println(DASHES);

        System.out.println(DASHES);
        String ans = in.nextLine();

        if (ans.compareTo("Yes") == 0) {
            resendConfirmationCode(identityProviderClient, clientId, userName);
            System.out.println("3. Sending a new confirmation code");
        }
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("4. Enter confirmation code that was emailed");
        String code = in.nextLine();
        confirmSignUp(identityProviderClient, clientId, code, userName);
        System.out.println("Rechecking the status of " + userName + " in the user pool");
        getAdminUser(identityProviderClient, userName, poolId);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("5. Invokes the initiateAuth to sign in");
        AdminInitiateAuthResponse authResponse = initiateAuth(identityProviderClient, clientId, userName, password,
                poolId);
        String mySession = authResponse.session();
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("6. Invokes the AssociateSoftwareToken method to generate a TOTP key");
        String newSession = getSecretForAppMFA(identityProviderClient, mySession);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("*** Enter the 6-digit code displayed in Google Authenticator");
        String myCode = in.nextLine();
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("7. Verify the TOTP and register for MFA");
        verifyTOTP(identityProviderClient, newSession, myCode);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("8. Re-enter a 6-digit code displayed in Google Authenticator");
        String mfaCode = in.nextLine();
        AdminInitiateAuthResponse authResponse1 = initiateAuth(identityProviderClient, clientId, userName, password,
                poolId);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("9.  Invokes the AdminRespondToAuthChallenge");
        String session2 = authResponse1.session();
        adminRespondToAuthChallenge(identityProviderClient, userName, clientId, mfaCode, session2);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("All Amazon Cognito operations were successfully performed");
        System.out.println(DASHES);
    }

    // Respond to an authentication challenge.
    public static void adminRespondToAuthChallenge(CognitoIdentityProviderClient identityProviderClient,
            String userName, String clientId, String mfaCode, String session) {
        System.out.println("SOFTWARE_TOKEN_MFA challenge is generated");
        Map<String, String> challengeResponses = new HashMap<>();

        challengeResponses.put("USERNAME", userName);
        challengeResponses.put("SOFTWARE_TOKEN_MFA_CODE", mfaCode);

        AdminRespondToAuthChallengeRequest respondToAuthChallengeRequest = AdminRespondToAuthChallengeRequest.builder()
                .challengeName(ChallengeNameType.SOFTWARE_TOKEN_MFA)
                .clientId(clientId)
                .challengeResponses(challengeResponses)
                .session(session)
                .build();

        AdminRespondToAuthChallengeResponse respondToAuthChallengeResult = identityProviderClient
                .adminRespondToAuthChallenge(respondToAuthChallengeRequest);
        System.out.println("respondToAuthChallengeResult.getAuthenticationResult()"
                + respondToAuthChallengeResult.authenticationResult());
    }

    // Verify the TOTP and register for MFA.
    public static void verifyTOTP(CognitoIdentityProviderClient identityProviderClient, String session, String code) {
        try {
            VerifySoftwareTokenRequest tokenRequest = VerifySoftwareTokenRequest.builder()
                    .userCode(code)
                    .session(session)
                    .build();

            VerifySoftwareTokenResponse verifyResponse = identityProviderClient.verifySoftwareToken(tokenRequest);
            System.out.println("The status of the token is " + verifyResponse.statusAsString());

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

    public static AdminInitiateAuthResponse initiateAuth(CognitoIdentityProviderClient identityProviderClient,
            String clientId, String userName, String password, String userPoolId) {
        try {
            Map<String, String> authParameters = new HashMap<>();
            authParameters.put("USERNAME", userName);
            authParameters.put("PASSWORD", password);

            AdminInitiateAuthRequest authRequest = AdminInitiateAuthRequest.builder()
                    .clientId(clientId)
                    .userPoolId(userPoolId)
                    .authParameters(authParameters)
                    .authFlow(AuthFlowType.ADMIN_USER_PASSWORD_AUTH)
                    .build();

            AdminInitiateAuthResponse response = identityProviderClient.adminInitiateAuth(authRequest);
            System.out.println("Result Challenge is : " + response.challengeName());
            return response;

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

        return null;
    }

    public static String getSecretForAppMFA(CognitoIdentityProviderClient identityProviderClient, String session) {
        AssociateSoftwareTokenRequest softwareTokenRequest = AssociateSoftwareTokenRequest.builder()
                .session(session)
                .build();

        AssociateSoftwareTokenResponse tokenResponse = identityProviderClient
                .associateSoftwareToken(softwareTokenRequest);
        String secretCode = tokenResponse.secretCode();
        System.out.println("Enter this token into Google Authenticator");
        System.out.println(secretCode);
        return tokenResponse.session();
    }

    public static void confirmSignUp(CognitoIdentityProviderClient identityProviderClient, String clientId, String code,
            String userName) {
        try {
            ConfirmSignUpRequest signUpRequest = ConfirmSignUpRequest.builder()
                    .clientId(clientId)
                    .confirmationCode(code)
                    .username(userName)
                    .build();

            identityProviderClient.confirmSignUp(signUpRequest);
            System.out.println(userName + " was confirmed");

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

    public static void resendConfirmationCode(CognitoIdentityProviderClient identityProviderClient, String clientId,
            String userName) {
        try {
            ResendConfirmationCodeRequest codeRequest = ResendConfirmationCodeRequest.builder()
                    .clientId(clientId)
                    .username(userName)
                    .build();

            ResendConfirmationCodeResponse response = identityProviderClient.resendConfirmationCode(codeRequest);
            System.out.println("Method of delivery is " + response.codeDeliveryDetails().deliveryMediumAsString());

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

    public static void signUp(CognitoIdentityProviderClient identityProviderClient, String clientId, String userName,
            String password, String email) {
        AttributeType userAttrs = AttributeType.builder()
                .name("email")
                .value(email)
                .build();

        List<AttributeType> userAttrsList = new ArrayList<>();
        userAttrsList.add(userAttrs);
        try {
            SignUpRequest signUpRequest = SignUpRequest.builder()
                    .userAttributes(userAttrsList)
                    .username(userName)
                    .clientId(clientId)
                    .password(password)
                    .build();

            identityProviderClient.signUp(signUpRequest);
            System.out.println("User has been signed up ");

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

    public static void getAdminUser(CognitoIdentityProviderClient identityProviderClient, String userName,
            String poolId) {
        try {
            AdminGetUserRequest userRequest = AdminGetUserRequest.builder()
                    .username(userName)
                    .userPoolId(poolId)
                    .build();

            AdminGetUserResponse response = identityProviderClient.adminGetUser(userRequest);
            System.out.println("User status " + response.userStatusAsString());

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+ API 세부 정보는 *AWS SDK for Java 2.x API 참조*의 다음 항목을 참조하세요.
  + [AdminGetUser](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AdminGetUser)
  + [AdminInitiateAuth](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AdminInitiateAuth)
  + [AdminRespondToAuthChallenge](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AdminRespondToAuthChallenge)
  + [AssociateSoftwareToken](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/AssociateSoftwareToken)
  + [ConfirmDevice](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ConfirmDevice)
  + [ConfirmSignUp](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ConfirmSignUp)
  + [InitiateAuth](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/InitiateAuth)
  + [ListUsers](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ListUsers)
  + [ResendConfirmationCode](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/ResendConfirmationCode)
  + [RespondToAuthChallenge](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/RespondToAuthChallenge)
  + [SignUp](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/SignUp)
  + [VerifySoftwareToken](https://docs.aws.amazon.com/goto/SdkForJavaV2/cognito-idp-2016-04-18/VerifySoftwareToken)