在Python中将Protobuf转换为JSON [英] Protobuf to json in python

问题描述

我有一个对象，该对象在Python中使用protobuf反序列化.当我打印对象时，它看起来像一个python对象，但是当我尝试将其转换为json时，我遇到了各种各样的问题.

I have an object that I de-serialize using protobuf in Python. When I print the object it looks like a python object, however when I try to convert it to json I have all sorts of problems.

例如，如果我使用json.dumps()，我会得到该对象(从protoc生成的代码)不包含_ dict _错误.

For example, if I use json.dumps() I get that the object (the generated code from protoc) does not contain a _ dict _ error.

如果我使用jsonpickle，则会得到UnicodeDecodeError: 'utf8' codec can't decode byte 0x9d in position 97: invalid start byte.

If I use jsonpickle I get UnicodeDecodeError: 'utf8' codec can't decode byte 0x9d in position 97: invalid start byte.

下面的测试代码正在使用jsonpickle并显示上面的错误.

Test code below is using jsonpickle with the error shown above.

if len(sys.argv) < 2:
    print ("Error: missing ser file")
    sys.exit()
else :
    fileLocation = sys.argv[1]

org = BuildOrgObject(fileLocation) 

org = org.Deserialize()


#print (org)
jsonObj = jsonpickle.encode(org)
print (jsonObj)

推荐答案

我建议使用Google的 protobuf 库:

I'd recommend using protobuf↔json converters from google's protobuf library:

from google.protobuf.json_format import MessageToJson

jsonObj = MessageToJson(org)

请参阅protobuf程序包API: https://developers.google.com /protocol-buffers/docs/reference/python/(请参阅模块google.protobuf.json_format).

Refer to protobuf package API: https://developers.google.com/protocol-buffers/docs/reference/python/ (see module google.protobuf.json_format).

请注意，您也可以将protobuf序列化为Dict

Note you can also serialise the protobuf to a Dict

from google.protobuf.json_format import MessageToDict
dict_obj = MessageToDict(org)

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