Java 使用DefaultAWSCredentialsProviderChain（）创建DynamoDbAsyncClient

我正在使用以下代码片段创建DynamoDbAsyncClient：

@Bean
public DynamoDbAsyncClient dynamoDbAsyncClient() throws URISyntaxException{
    return DynamoDbAsyncClient.builder()
            .credentialsProvider(software.amazon.awssdk.auth.credentials.DefaultCredentialsProvider.create())
            .region(Region.of(region))
            .overrideConfiguration(DynamoProperties.getOverrideConfiguration(dynamoProperties.getAsync()))
            .endpointOverride(new URI(amazonDynamoDBEndpoint))
            .build();
}

如何使用默认凭据提供程序链创建相同的客户端。如下所示：

 clientBuilder.withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(amazonDynamoDBEndpoint, region))
           .withCredentials(new DefaultAWSCredentialsProviderChain());

任何帮助都将不胜感激