AWS Local DynamoDB 請求中包含的安全令牌無效

Question

我是 AWS 新手，我正在嘗試從 Java 程序對本地 DynamoDB 執行 CRUD 操作。 Java 程序是 AWS 示例。

我安裝了 AWS CLI 並設置了以下配置 - 根據 AWS 文檔，我不需要本地 DynamoDB 的真正 AWS 訪問和密鑰。

我通過在 AWS CLI 中運行 aws configure 在 ~/.aws/config 和 ~/.aws/credentials 中設置了以下值。

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

我有本地 DYnamoDB JAR 運行這個。

java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb

我試圖運行的代碼就是這個。

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

但是，我得到了這個例外。

AmazonDynamoDBException：請求中包含的安全令牌無效。

完整的堆棧是這樣的。

    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)

任何幫助將不勝感激。 提前致謝。

Answer 1

據我所知，引用的代碼中沒有任何內容指向 DynamoDB 本地實例。 看起來它指向正確的 DynamoDB。

您需要將端點更改為本地版本。 看看這個頁面。 它有一個將端點更改為 localhost:8080 的示例。

Answer 2

確切地說，問題似乎確實指向 AWS 上的 DynamoDB，而不是本地的，盡管我無法驗證原始評論的這一點，因為鏈接現在已損壞，至少這是發生在我身上的事情。

解決方案是顯式連接到本地 DynamoBD（需要安裝）這是實現它的代碼：

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

This is the link to the example class mentioned on previous comments that was deleted(you will need to click on Load Diff for the DynamoDBLocalFixture.java class): https://github.com/aws-samples/aws-dynamodb-examples/提交/461b0e85bfad58f4a62c63f38426c650896fb870#diff-b331539c5e8b0398d9bbb85c5b87a4cdfa32efbefb27f68f3402c223b243b178