Django 之 下载文件

法I：

views.py

 #encoding:utf-8
 import os

 from django.core.servers.basehttp import FileWrapper
 from django.http import HttpResponse

 path = '/tmp/'
 def downloader(request):
     filename_tmp = 'test.tmp'   # test.tmp为将要被下载的文件名
     filename = os.path.join(path,filename_tmp)
     wrapper = FileWrapper(file(filename))
     response = HttpResponse(wrapper, content_type='text/plain')
     response['Content-Length'] = os.path.getsize(filename)
     response['Content-Disposition'] = 'attachment; filename="somefilename.csv"'    # somefilename.csv为下载后的文件名
     return response

法II：

test.html

<a href="download/file/">下载</a>

urls.py

 url(r'^download/file/$', 'xxx.views.download'),    # xxx为项目名

xxx中的views.py

 import os
 from django.http import HttpResponse
 from django.contrib.auth.decorators import login_required

 @login_required
 def download(request):
     response = HttpResponse()
     response['Content-Disposition'] = 'attachment;filename=downfile.txt'    # downfile.txt为下载后的文件名
     full_path = os.path.join('/tmp', 'filename.txt')    # filename.txt为将要被下载的文件名
     if os.path.exists(full_path):
         response['Content-Length'] = os.path.getsize(full_path)    #  可不加
         content = open(full_path, 'rb').read()
         response.write(content)
         return response
     else:
         return HttpResponse(u'文件未找到')

法III：

test.html

<a href="download/downfile.txt">下载</a>

urls.py

 1 url(r'^download/(?P.*)$', 'django.views.static.serve',{'document_root':文件路径}),