Error in json.loads() for data that has base64 decoding applied

问题

I am trying to use json.loads() in python

I get the error:

the JSON object must be str, not 'bytes'

a = {'h': '123', 'w': '12345', 'data': "b'eyJod2lkIjpwomfcwpvepovnepovqrepniLLKJAMSNDMSNDMAWEFMOEDAad='"}


a.update(json.loads(base64.b64decode(a['data'])))

Here the 'data' portion of a was being loaded in as a json dump with b64encoding.

'data':base64.b64encode(json.dumps(test).encode()); where test = some string eg('epovqrepniLLKJAMSNDMSNDMAWEFMOEDAad=')

I have tried using:

a.update(json.loads(base64.b64decode(a['data']).decode('utf-8')))

Giving me a 'utf-8' codec can't decode bytes in position: invalid continuation byte

I have also tried using decodebytes instead of b64decode to no avail.

I'd really appreciate any help!

回答1:

Thank you all for your help.

After lots of searching on Stackoverflow coupled with testing on my local machine I was able to drill it down to this.

The object (a['data']) that was being passed in had some values that were not utf-8 decodable.

It was in the form of b'xxxsknoen'

I ended up deleting the b and the quotes in the front and end and then converting it to an str.

var = base64.b64decode(str(a['data'])[2:-1]).decode('utf-8')
a.update(json.loads(var))

来源：https://stackoverflow.com/questions/50693871/error-in-json-loads-for-data-that-has-base64-decoding-applied