AWS DynamoDB Local-AmazonDynamoDBException：请求中包含的安全令牌已过期

Question

Test class code is below
`private static AmazonDynamoDB ddb;
    private static DynamoDB dynamoDB ;
ddb = AmazonDynamoDBClientBuilder
                .standard()
                .withEndpointConfiguration(
                new AwsClientBuilder.EndpointConfiguration
                        ("http://localhost:8000",
                        "us-west-2"))
                .build();
        dynamoDB = new DynamoDB(ddb);
`
i have created Dynamodb local using docker

docker run -p 8000:8000 -v $(pwd)/local/dynamodb:/data/ amazon/dynamodb-local -jar DynamoDBLocal.jar -sharedDb -inMemory

包含以下代码的实际类 client = AmazonDynamoDBClientBuilder.standard().build(); dynamoDB = new DynamoDB(client);

在测试用例类中，我可以创建表，向表中插入数据，从表中读取数据以及从表中删除数据。

但是当我调用实际的类来读取dynamodb local的数据时，我得到了以下错误 com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: The security token included in the request is expired (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ExpiredTokenException