嘗試使用 AWS DynamoDB Java API 創建AmazonDynamoDBClient對象并收到錯誤按照這個例子：https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/CodeSamples.Java.html使用 AWS DynamoDB SDK (Java)：完整內容pom.xml如下代碼：AmazonDynamoDBClient dynamoDBclient = new AmazonDynamoDBClientBuilder.standard()                 .withRegion(Regions.US_WEST_2)                 .build();錯誤：無法解析符號“標準”我使用 Java 8、IntelliJ IDE 和 Maven 作為構建工具我的進口：import com.amazonaws.regions.Regions;import com.amazonaws.services.dynamodbv2.document.DynamoDB;import com.amazonaws.services.dynamodbv2.document.Item;import com.amazonaws.services.dynamodbv2.document.PutItemOutcome;import com.amazonaws.services.dynamodbv2.document.spec.PutItemSpec;import com.amazonaws.services.dynamodbv2.model.ConditionalCheckFailedException;import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;