Django的Httpresponse對象允許將迭代器作為傳入?yún)?shù)。StreamingHttpResponse對象取代HttpRseponse對象捧存，更適合與文件下載。服務(wù)器上的文件已經(jīng)通過文件流傳輸?shù)綖g覽器上镰官，單文件流會一亂碼的方式顯示在瀏覽器中吗货，而不是下載在硬盤中，可以給StreamHttpResponse對象的Content_type 和 Content_Disposition字段賦值 Content_type :http://tool.oschina.net/commons(指明文件的格式)
當(dāng)文件為多個文件是自動生成zip格式的壓縮包
from django.http import StreamingHttpResponse
def big_file_download(request):
def file_iterator(file_name, chunk_size=512):
with open('static/app/app.apk') as f:
while True:
c = f.read(chunk_size)
if c:
yield c
else:
break
the_file_name = "big_file.apk"
response = StreamingHttpResponse(file_iterator(the_file_name))
response['Content-Type'] = 'application/application/vnd.android.package-archive'
response['Content-Disposition'] = 'attachment;filename=" {0}"'.format(the_file_name)
return response
