How can I solve TypeError: expected str, bytes or os.PathLike object, not InMemoryUploadedFile

Question

我正在尝试使用 base64 对图像进行编码，以便将其作为字符串保存到数据库中。使用 django，我从 POST 请求中获取表单数据中的任何内容。为了指定图像，我使用了一个文件输入标签并将 enctype 更改为 multipart/form-data。但我收到此错误： TypeError: expected str, bytes or os.PathLike object, not InMemoryUploadedFile 我知道还有另一个页面有同样的问题，但我觉得它不能解决我的问题，因为我不处理该文件，因为它只是一个图像。我试过访问其他网站，但它们似乎没有那么有用

这是注册表，可以看到有文件输入标签


    <div class="login-cont">
        <h1>Register!</h1>
        <div class="form">
            <form action="{% url 'register' %}" method="POST" enctype="multipart/form-data">
                {% csrf_token %}
                <input type="text" name="username" placeholder="Username" class="form-control">
                <input type="text" name="fullname" placeholder="Full Name" class="form-control">
                <input type="email" name="email" placeholder="Email" class="form-control">
                <input type="password" name="password" placeholder="Password" class="form-control">
                <input type="text" name="area" placeholder="Which state did you study in?" class="form-control">
                <input type="text" name="school" placeholder="What university/college did you attend" class="form-control">
                <input type="file" name="propic" class="custom-file-input" id="validatedCustomFile" placeholder="Choose photo..">
                <input type="submit" value="Submit" class="btn btn-primary">
            </form>
        </div>
    </div>

这是处理它的视图


    def signup(request):
        if request.method == "POST":
            username = request.POST["username"]
            fullname = request.POST["fullname"]
            password = request.POST["password"]
            email = request.POST["email"]
            area = request.POST["area"]
            school = request.POST["school"]
            propic = request.FILES["propic"]
    
            with open(propic, 'rb') as binary_file:
                binary_file_data = binary_file.read()
                base64_encoded_data = base64.b64encode(binary_file_data)
                base64_message = base64_encoded_data.decode('utf-8')
    
                print(base64_message)
            try:
                user = User.objects.create_user(username=username, email=email, password=password, area=area, school=school, propic=propic)
                user.save()
            except IntegrityError:
                return render(request, "alumnas/register.html", {
                    'message':"Username taken"
                })
            login(request, user)
            return HttpResponseRedirect(reverse("index"))
        else:
            return render(request, "alumnas/register.html")

Answer 1

发生错误是因为您试图打开 uploaded file 并将其用作路径（查看您的回溯）。

上传的文件通常存储在内存中并已准备好工作，因此您不需要（几乎不能）直接打开它。

所以，而不是做

 with open(propic, 'rb') as binary_file:
                binary_file_data = binary_file.read()

做

binary_file_data = propic.read()

您还可以查看 Django 文档，了解如何work with files 使用有关使用文件的最佳实践，这可能比在数据库中存储 base64 表示形式容易得多。

How can I solve TypeError: expected str, bytes or os.PathLike object, not InMemoryUploadedFile

How can I solve TypeError: expected str, bytes or os.PathLike object, not InMemoryUploadedFile

python

base64