字符串格式化为base64到base64对象

Question

从帖子请求中，我收到了一个JSON的base64。问题是我不能将文件类型从字符串更改为base64，因为它已经格式化为base64。需要base64将其转换回图像。

json_data = request.get_json(force=True)
img = json_data['img']
print(img)
with open("imageToSave.png", "wb") as fh:
   fh.write(base64.decodebytes(img))

Answer 1

为了解码它，添加第三行将字符串解码为base64

json_data = request.get_json(force=True)
img = json_data['img']
imgdata = base64.b64decode(img)
filename = 'upload/newimg.jpg'  # I assume you have a way of picking unique filenames
    with open(filename, 'wb') as f:
        f.write(imgdata)