在Django中上载图像：“utf8”编解码器无法解码位置246中的字节0x89：无效的开始字节

Question

我尝试使用纯json在api中上载图像，但当我尝试在request.Files中上载图像并在request.body中上载令牌时，我遇到以下错误：

UnicodeDecodeError at /api/auth/set-profile-image/
'utf-8' codec can't decode byte 0x89 in position 246: invalid start byte

上面写着：

Unicode error hint
The string that could not be encoded/decoded was: " �PNG

但我正在发送JPG！：D

View.py

@csrf_exempt
def set_profile_image(request):
    if request.method == 'POST':
        request_info = json.loads(request.body)
        token = request_info.get('token')
        img = request.FILES['image']
        if token is not None and img is not None:
            user = User.objects.filter(token=token)
            if user.exists():
                user = user.get()
                form = UploadImage(request.POST, request.FILES['image'])
                if form.is_valid():
                    user.profile_image = form.cleaned_data['image']
                    user.save()
                    response = {
                        'status_code': 200,
                        'image_set': True,
                        'image_url': user.profile_image.url
                    }

Form.py

from django import forms

class UploadImage(forms.Form):
    image = forms.ImageField()

我的测试代码是：

import requests

data = {
    'token': 'helloworld1--_aFsV-ZVG9lVpi0KSydrx3pG3TSMPqqHVKWD2Yc8bE'
}

url = 'http://localhost:8000/api/auth/set-profile-image/'

with open('test.jpg', 'rb') as img:

    response = requests.post(
        url=url,
        data=data,
        files={
            'image': img
        }
    )

    # print(response.text)
    f = open('test.html', 'wb')
    f.write(response.content)
    f.close()

我正在models.py中使用ImageField作为我的db字段

致以最热烈的问候， 可怜的维护人员被其他代码卡住了

Answer 1

好的，经过一些测试，感谢Jacob See的回答，我找到了一个解决方案：

首先，我将图像编码到base64并通过API发送，如下所示：

with open('test.jpg', 'rb') as img:
    data = {
        "token": "some token"
    }

    response = requests.post(
        url=url,
        data={
            'data': json.dumps(data),
            'image': b64encode(img.read())
        }
    )

在我的API中，我执行以下操作：

new_base64_img = request.POST.get('image', None)

try:
    image = Image.open(BytesIO(b64decode(new_base64_img)))
    image_content = ContentFile(b64decode(new_base64_img))
    file_name = "some file name" + image.format

    user.profile_image.save(file_name, image_content, save=True)
    return JsonResponse({"OK"})

except IOError:
    return JsonResponse({"Image should be base64 encoded!"})

问题解决：D