AWS Local DynamoDB请求中包含的安全令牌无效

Question

我是新来的AWS和我试图执行CRUD操作本地DynamoDB从一个Java程序。Java程序是一个AWS示例。

我安装了AWS CLI并设置了以下配置-根据AWS文档，我不需要本地DynamoDB的真正AWS访问和密钥。

我在~/中设置了以下值。aws/config和~/。通过在aws CLI中运行aws configure获得aws/credentials。

[default]
aws_access_key_id = ''
aws_secret_access_key = ''
[default]
region = ap-south-1

我有本地DYnamoDB JAR与此运行。

java-Djava。图书馆路径=/DynamoDBLocal_lib-jar DynamoDBLocal。jar-sharedDb

我试图运行的代码是这样的。

https://github.com/aws-samples/aws-dynamodb-examples/blob/master/src/main/java/com/amazonaws/codesamples/datamodeling/ObjectPersistenceCRUDExample.java

然而，我得到了这个例外。

亚马逊动态数据库异常：请求中包含的安全令牌无效。

完整的堆栈如下所示。

    Exception in thread "main" com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: The security token included in the request is invalid. (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: UnrecognizedClientException; Request ID: UPGRD2BRNUN6S1702EN6N6S8RJVV4KQNSO5AEMVJF66Q9ASUAAJG)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1695)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1350)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1101)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:758)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:732)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:714)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:674)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:656)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:520)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:4192)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:4159)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.executeUpdateItem(AmazonDynamoDBClient.java:3868)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.updateItem(AmazonDynamoDBClient.java:3835)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper$SaveObjectHandler.doUpdateItem(DynamoDBMapper.java:854)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper$2.executeLowLevelRequest(DynamoDBMapper.java:594)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper$SaveObjectHandler.execute(DynamoDBMapper.java:733)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.save(DynamoDBMapper.java:623)
    at com.amazonaws.services.dynamodbv2.datamodeling.AbstractDynamoDBMapper.save(AbstractDynamoDBMapper.java:123)
    at com.stackroute.Main.testCRUDOperations(Main.java:60
    at com.stackroute.Main.main(Main.java:17)

任何帮助将高度赞赏。提前感谢。

Answer 1

确切地说，问题似乎确实指向AWS上的DynamoDB，而不是本地的，尽管我无法验证原始评论中的这一点，因为链接现在断开了，至少这是发生在我身上的事情。

解决方案是显式连接到本地DynamoBD（需要安装），这是实现此功能的代码：

AmazonDynamoDBClientBuilder.standard().withEndpointConfiguration(
            // we can use any region here
            new AwsClientBuilder.EndpointConfiguration("http://localhost:8000", "us-west-2"))
            .build();

这是指向先前注释中提到的已删除的示例类的链接（您需要单击DynamoDBLocalFixture.java类的Load Diff）：https://github.com/aws-samples/aws-dynamodb-examples/commit/461b0e85bfad58f4a62c63f38426c650896fb870#diff-B331539C5E8B0398D9BBB85C5B87A4CDFA32EFB27F68F3402C2223B243B178

Answer 2

据我所知，引用的代码中没有任何内容指向DynamoDB本地实例。它看起来像是指向DynamoDB本身。

您需要将endpoint更改为本地版本。请看这一页。它有一个将endpoint更改为localhost:8080的示例。