如何在python中将任意文件类型序列化为json字符串 [英] how to serialize arbitrary file types to json string in python

问题描述

我的服务器将通过套接字将JSON(序列化为字符串)发送到另一台客户端计算机.我将使用我的最终json并执行以下操作:

My server is going to be sending a JSON, serialized as a string, through a socket to another client machine. I'll take my final json and do this:

import json
python_dict_obj = { "id" : 1001, "name" : "something", "file" : <???> }
serialized_json_str = json.dumps(python_dict_obj)

我想让JSON中的字段之一具有作为文件编码为字符串的值.

I'd like to have one of the fields in my JSON have the value that is a file, encoded as a string.

从性能角度(也从互操作性角度出发)，使用python编码文件的最佳方法是什么? Base64?二进制?只是原始字符串文本?

Performance-wise (but also interoperability-wise) what is the best way to encode a file using python? Base64? Binary? Just the raw string text?

编辑-对于那些建议base64，是这样的吗?

EDIT - For those suggestion base64, something like this?

# get file
import base64
import json

with open(filename, 'r') as f:
    filecontents = f.read()
encoded = base64.b64encode(filecontents)
python_dict_obj['file'] = encoded
serialized_json_str = json.dumps(python_dict_obj)

# ... sent to client via socket

# decrpyting
json_again = json.loads(serialized)
filecontents_again = base64.b64decode(json_again['file'])

推荐答案

我将使用base64. JSON并非旨在传递二进制数据.因此，除非您的文件内容是纯文本，否则应该"将其编码为使用纯文本.几乎所有内容都可以对base64进行编码和解码.如果改用(例如)Python的repr(file_content)，它也会产生纯文本"，但是接收端将需要知道如何解码Python的repr()使用的字符串.

I'd use base64. JSON isn't designed to communicate binary data. So unless your file's content is vanilla text, it "should be" encoded to use vanilla text. Virtually everything can encode and decode base64. If you instead use (for example) Python's repr(file_content), that also produces "plain text", but the receiving end would need to know how to decode the string escapes Python's repr() uses.

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