特点就是：
在form_valid验证中，完成数据的验证或者解析
urls.py
from django.urls import path
from .views import UploadView
urlpatterns = [
path('', UploadView.as_view(), name='index'),
]
forms.py
from django import forms
from django.core.validators import FileExtensionValidator
class UploadForm(forms.Form):
file = forms.FileField(
validators=[FileExtensionValidator(['csv', ])])
views.py
import csv
import io
from django.http import HttpResponse
from django.views.generic import FormView
from .forms import UploadForm
# Create your views here.
class UploadView(FormView):
form_class = UploadForm
template_name = 'app/UploadForm.html'
def form_valid(self, form):
csvfile = io.TextIOWrapper(form.cleaned_data['file'])
# 这里需要替换你自己的逻辑。
reader = csv.reader(csvfile)
count = sum(1 for row in reader)
result = '数据总数为：{}条'.format(count)
# 需要在页面显示结果
return self.render_to_response(self.get_context_data(result=result))
# 如果需要下载文件，则按以下
# response = HttpResponse(result, content_type='text/plain')
# response['Content-Disposition'] = 'attachment; filename = "result.txt"'
# return response
UploadForm.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div>
<form action="{% url 'index' %}" method="POST" enctype="multipart/form-data">
{% csrf_token %}
<div>
<div>
{{ form.file }}
<p>{{ form.file.errors }}</p>
</div>
</div>
<input type="submit" value="アップロード">
</form>
<pre>{{ result }}</pre>
</div>
</div>
</body>
</html>
标签：form,验证,django,forms,UploadForm,result,import,解析,上传 From： https://www.cnblogs.com/lxgbky/p/17539017.html