django中下载文件，三种方式

1：使用HttpResponse

from django.shortcuts import HttpResponse

def file_download(request):

    file=open('/home/dianwei/new_project/media/down_load.tar.gz','rb')  # 可以改变读的方式

    response =HttpResponse(file)

    response['Content-Type']='application/octet-stream'

    response['Content-Disposition']='attachment;filename="down_load.tar.gz"'

   return response

2：使用StreamingHttpResponse

from django.http import StreamingHttpResponse

def file_download(request):

    file=open('/home/dianwei/new_project/media/down_load.tar.gz','rb')

    response =StreamingHttpResponse(file)

    response['Content-Type']='application/octet-stream'

    response['Content-Disposition']='attachment;filename="down_load.tar.gz"'

    return response

3：使用FileResponse

from django.http import FileResponse

def file_download(request):

    file=open('/home/dianwei/new_project/media/down_load.tar.gz','rb')

    response =FileResponse(file)

    response['Content-Type']='application/octet-stream'

    response['Content-Disposition']='attachment;filename="down_load.tar.gz"'

    return response