定义：
上传规则-前端【html】：
上传规则-后端【Django】：
urlpatterns = [path('upload',views.test_upload)
]
例子：
settings添加:
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')主路由：
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
分路由：
urlpatterns = [path('upload',views.test_upload)
]models:
class Content(models.Model):title = models.CharField('标题', max_length=100)picture = models.FileField(upload_to='picture')views：
def test_upload(request):if request.method == 'POST':file = request.FILES.get('file')title = request.POST.get('title')Content.objects.create(title=title,file=file)return HttpResponse('上传成功')elif request.method == 'GET':return render(request,'node/test_upload.html')
