正常来说我们无法用json格式来传输图片的，我们需要将图片文件转换为base64格式，从而可以用json格式来传输，下面介绍两种格式互转的python代码
1、PIL转base64
import base64
from io import BytesIO
from PIL import Image
def PIL_to_base64(image):
output = BytesIO()
image.save(output,format='png')
contents = output.getvalue()
output.close()
string = base64.b64encode(contents)
return string
2、base64转PIL
import base64
import six
from PIL import Image
def base64_to_PIL(string):
"""
base64 string to PIL
"""
try:
base64_data = base64.b64decode(string)
buf = six.BytesIO()
buf.write(base64_data)
buf.seek(0)
img = Image.open(buf).convert('RGB')
return img
except:
return None
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