AWS上的DynamoDB JSON格式Lambda

Question

我使用Python和AWS Lambda检索DynamoDB项目。我无法解析响应中包含的值。

例如，这将返回响应[ '项目'] [ 'GUID']

【U'S '：u'8898f389-c282-4c4f-952A-87a0fbbb6d70'}

在端，我只想要没有无关信息DynamoDB插入的实际值。如何最好地处理使用Python 2.7的DynamoDB的JSON格式？

Answer 1

这是一个例子： `dynamo_GUID = json.dumps（响应[ '项目'] [ 'GUID']）` ：

def lambda_handler(event, context): 

     print("Received event: " + json.dumps(event, indent=2)) 

     if 'Records' not in event: 
      print ('records not in event') 
      return 

     for record in event['Records']: 
      if record['eventName'] == 'INSERT': 
       print 'do something on insert' 

      your_integer_hash_key = record['dynamodb']['Keys']['your_hash_key']['N'] 

      # if all image is stream 
      if not 'NewImage' in record['dynamodb']: 
       continue 

      # get new image  
      new_image = record['dynamodb']['NewImage']