通过DynamoDbMapper从Dynamodb返回动态对象

import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBScanExpression;
import com.amazonaws.services.dynamodbv2.document.Item;
import com.amazonaws.services.dynamodbv2.document.ScanOutcome;
import com.amazonaws.services.dynamodbv2.document.Table;
import com.amazonaws.services.dynamodbv2.document.DynamoDB;
import com.amazonaws.services.dynamodbv2.document.DynamoDBClientBuilder;

public class DynamoDBMapperExample {
    public static void main(String[] args) {
        // 创建DynamoDBMapper对象
        DynamoDBMapper mapper = new DynamoDBMapper(AmazonDynamoDBClientBuilder.defaultClient());

        // 创建DynamoDBScanExpression对象
        DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();

        // 执行查询操作
        List<Item> items = mapper.scan(Item.class, scanExpression);

        // 处理返回结果
        for (Item item : items) {
            // 对每个动态对象进行处理
            System.out.println(item.toJSON());
        }
    }
}