3 ways to achieve django file downloads

方法一：使用HttpResponse
from django.shortcuts import HttpResponse  
def file_down(request):  
    file=open('/home/amarsoft/download/example.tar.gz','rb')  
    response =HttpResponse(file)  
    response['Content-Type']='application/octet-stream'  
    response['Content-Disposition']='attachment;filename="example.tar.gz"'  
    return response

方法二：使用StreamingHttpResponse
from django.http import StreamingHttpResponse  
def file_down(request):  
    file=open('/home/amarsoft/download/example.tar.gz','rb')  
    response =StreamingHttpResponse(file)  
    response['Content-Type']='application/octet-stream'  
    response['Content-Disposition']='attachment;filename="example.tar.gz"'  
    return response


方法三：使用FileResponse
from django.http import FileResponse  
def file_down(request):  
    file=open('/home/amarsoft/download/example.tar.gz','rb')  
    response =FileResponse(file)  
    response['Content-Type']='application/octet-stream'  
    response['Content-Disposition']='attachment;filename="example.tar.gz"'  
    return response

Summary: Comparison 
Although the use of these three methods can achieve, but recommended FileResponse, 
use the cache FileResponse, the more economical resource. 

Although it is three ways, but the same principle, it means one way.