dynamodb "GetItem operation: Requested resource not found" / "The provided key element does not match the schema"

Question

我不知道怎么解释：

$aws dynamodb scan --table-name Todos-dev  
...
{
    "Items": [
        {
            "todoId": {
                "S": "9e6e7f0f-97ee-4289-93b9-cb1bf46d5190"
            },
            "createdAt": {
                "S": "2019-12-29T07:11:09.581Z"
            },
            "name": {
                "S": "test4"
            },
            "userId": {

和

$ aws dynamodb get-item --table-name Todos.dev --key file://key.json

An error occurred (ResourceNotFoundException) when calling the GetItem operation: Requested resource not found

哪里

$ cat key.json 
{"todoId": {"S": "9e6e7f0f-97ee-4289-93b9-cb1bf46d5190"}}

serverless.yml

    TodosTable:
      Type: AWS::DynamoDB::Table
      Properties:
        AttributeDefinitions:
          - AttributeName: todoId
            AttributeType: S
          - AttributeName: createdAt
            AttributeType: S
          - AttributeName: dueDate
            AttributeType: S
        KeySchema:
          - AttributeName: todoId
            KeyType: HASH
          - AttributeName: createdAt
            KeyType: RANGE
        BillingMode: PAY_PER_REQUEST
        TableName: ${self:provider.environment.TODOS_TABLE}
        LocalSecondaryIndexes:
          - IndexName: ${self:provider.environment.INDEX_NAME}
            KeySchema:
              - AttributeName: todoId
                KeyType: HASH
              - AttributeName: dueDate
                KeyType: RANGE
            Projection:
              ProjectionType: ALL

我收到的消息 "The provided key element does not match the schema" 来自 docClient.delete，尝试了多种组合来指定密钥，但没有任何效果。

Answer 1

关键元素与架构不匹配

您的 table 有一个散列键和一个范围键。您的 key.json 文件只有散列键。使用 getItem 时，您必须提供完整（散列和范围）键。如果要为同一个散列键获取多个值，或者如果范围键值未知，则可以仅使用散列键，但必须使用 query api 代替。

找不到资源

您在扫描调用中使用 Todos-dev，但在 getItem 调用中使用 Todos.dev。

dynamodb "GetItem operation: Requested resource not found" / "The provided key element does not match the schema"

dynamodb "GetItem operation: Requested resource not found" / "The provided key element does not match the schema"

amazon-web-services

amazon-dynamodb

serverless