Python+django实现文件下载

#后台处理函数
def downloadFile(req):
  filename=basePath+req.GET['url']
  def file_iterator(file_name, chunk_size=512):
    with open(file_name) as f:
      while True:
        c = f.read(chunk_size)
        if c:
          yield c
        else:
          break
  response = StreamingHttpResponse(file_iterator(filename))
  response['Content-Type'] = 'application/octet-stream'
  response['Content-Disposition'] = 'attachment;filename="{0}"'.format(filename)
  return response

（3）前台使用函数方法

①、a标签调用函数传入路径

②、button标签调用jq方法调用后台函数