要使用 AWS Cognito 进行批量查询，您可以使用 AWS SDK 来实现。以下是一个使用 AWS SDK for Java 的示例代码：

import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProvider;
import com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClientBuilder;
import com.amazonaws.services.cognitoidentityprovider.model.AdminGetUserRequest;
import com.amazonaws.services.cognitoidentityprovider.model.AdminGetUserResult;
import com.amazonaws.services.cognitoidentityprovider.model.AttributeType;
import com.amazonaws.services.cognitoidentityprovider.model.ListUsersRequest;
import com.amazonaws.services.cognitoidentityprovider.model.ListUsersResult;
import com.amazonaws.services.cognitoidentityprovider.model.UserType;

import java.util.List;

public class CognitoBatchQueryExample {

    public static void main(String[] args) {
        // 设置您的 AWS 访问密钥和区域
        String accessKey = "YOUR_ACCESS_KEY";
        String secretKey = "YOUR_SECRET_KEY";
        String region = "YOUR_REGION";

        // 设置您的 Cognito 用户池 ID
        String userPoolId = "YOUR_USER_POOL_ID";

        // 创建 AWS 凭证对象
        BasicAWSCredentials awsCreds = new BasicAWSCredentials(accessKey, secretKey);

        // 创建 Cognito 客户端
        AmazonCognitoIdentityProvider cognitoClient = AmazonCognitoIdentityProviderClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(awsCreds))
                .withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(region, ""))
                .build();

        // 批量查询用户
        ListUsersResult listUsersResult = null;
        String paginationToken = null;
        do {
            ListUsersRequest listUsersRequest = new ListUsersRequest()
                    .withUserPoolId(userPoolId)
                    .withLimit(10) // 设置每次查询的用户数量
                    .withPaginationToken(paginationToken);
            listUsersResult = cognitoClient.listUsers(listUsersRequest);

            // 处理查询结果
            List users = listUsersResult.getUsers();
            for (UserType user : users) {
                String username = user.getUsername();
                List attributes = user.getAttributes();
                // 处理每个用户的属性
                System.out.println("Username: " + username);
                for (AttributeType attribute : attributes) {
                    String attributeName = attribute.getName();
                    String attributeValue = attribute.getValue();
                    System.out.println(attributeName + ": " + attributeValue);
                }
                System.out.println();
            }

            paginationToken = listUsersResult.getPaginationToken();
        } while (paginationToken != null);
    }
}

请确保将示例代码中的以下值替换为您自己的实际值：

• YOUR_ACCESS_KEY：您的 AWS 访问密钥的访问密钥 ID
• YOUR_SECRET_KEY：您的 AWS 访问密钥的秘密访问密钥
• YOUR_REGION：AWS 区域代码（例如，us-west-2）
• YOUR_USER_POOL_ID：您的 Cognito 用户池 ID

此示例代码将批量查询 Cognito 用户池中的用户，并打印每个用户的用户名和属性。您可以根据自己的需求对查询结果进行进一步处理。