我是dynamodb的新手，它试图从dynamodb获取数据。
我的python代码
import boto3
from boto3 import dynamodb
from boto3.session import Session
from boto3.dynamodb.conditions import Key, Attr
dynamodb_session = Session(aws_access_key_id='XXXXXXXXXXXXXXX',
aws_secret_access_key='XXXXXXXXXXXXXXXXXXXXXXXXXXXX',
region_name='us-east-1')
dynamodb = dynamodb_session.resource('dynamodb')
table=dynamodb.Table('Garbage_collector_table')
my_topic = "$aws/things/garbage_collector_thing/shadow/update/accepted"
response = table.get_item(TableName='Garbage_collector_table', Key={'topic':my_topic})
for res in response:
print "result ",res
我收到以下错误
Traceback (most recent call last):
File "get-data-dynamodb-boto3.py", line 19, in <module>
response = table.get_item(TableName='Garbage_collector_table', Key={'topic': my_topic}) File
"/usr/local/lib/python2.7/dist-packages/boto3/resources/factory.py",
line 518, in do_action
response = action(self, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/boto3/resources/action.py",
line 83, in __call__
response = getattr(parent.meta.client, operation_name)(**params) File "/usr/local/lib/python2.7/dist-packages/botocore/client.py", line
258, in _api_call
return self._make_api_call(operation_name, kwargs) File /usr/local/lib/python2.7/dist-packages/botocore/client.py", line 548,
in _make_api_call
raise ClientError(parsed_response, operation_name)
botocore.exceptions.ClientError：调用GetItem操作时发生错误（ValidationException）：提供的键元素与架构不匹配
我的代码中缺少任何内容吗？
您正在混合使用不同方法的资源和客户端对象。更多信息在这里。
资源的正确语法是：
response = table.get_item(Key={'topic': my_topic})
但我个人建议使用boto客户端：
client = boto3.client('dynamodb')
response = client.get_item(TableName='Garbage_collector_table', Key={'topic':{'S':str(my_topic)}})
http://boto3.readthedocs.io/en/latest/reference/services/dynamodb.html
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我来说两句