django下载生成的文件

Question

下载生成的文件（.xlsx）。这是一个视图的片段。 比这更好的解决方案吗？

inventory_file = open(file_path, "rb")
response = HttpResponse(inventory_file, content_type='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename=%s' % filename
return response

Answer 1

可能你应该将文件作为一个块发送，这是一个内存效率

import os
import mimetypes
from django.http import StreamingHttpResponse
from wsgiref.util import FileWrapper


def download_file(request):
   the_file = open(file_path, "rb")
   filename = os.path.basename(the_file)
   chunk_size = 8192
   response = StreamingHttpResponse(FileWrapper(open(the_file, 'rb'), chunk_size),
                           content_type=mimetypes.guess_type(the_file)[0])
   response['Content-Length'] = os.path.getsize(the_file)    
   response['Content-Disposition'] = "attachment; filename=%s" % filename
   return response