摘要：
必备知识：https://docs.djangoproject.com/en/dev/ref/files/storage/#django.core.files.storage.FileSystemStorage https://docs.djangoproject.com/en/dev/ref/request-response/#django.http.HttpResponse http://www.python.org/doc//current/library/mimetypes.html 关于mimetypesmimetypes模块根据文件扩展名在一个文件名或URL和M... 阅读全文