【转】Django下载大文件和压缩zip文件

01.import os, tempfile, zipfile  
02.from django.http import HttpResponse  
03.from django.core.servers.basehttp import FileWrapper  
04. 
05. 
06.def send_file(request):  
07.    """                                                                          
08.    Send a file through Django without loading the whole file into               
09.    memory at once. The FileWrapper will turn the file object into an            
10.    iterator for chunks of 8KB.                                                  
11.    """ 
12.    filename = __file__ # Select your file here.                                  
13.    wrapper = FileWrapper(file(filename))  
14.    response = HttpResponse(wrapper, content_type='text/plain')  
15.    response['Content-Length'] = os.path.getsize(filename)  
16.    return response  
17. 
18. 
19.def send_zipfile(request):  
20.    """                                                                          
21.    Create a ZIP file on disk and transmit it in chunks of 8KB,                  
22.    without loading the whole file into memory. A similar approach can           
23.    be used for large dynamic PDF files.                                         
24.    """ 
25.    temp = tempfile.TemporaryFile()  
26.    archive = zipfile.ZipFile(temp, 'w', zipfile.ZIP_DEFLATED)  
27.    for index in range(10):  
28.        filename = __file__ # Select your files here.                             
29.        archive.write(filename, 'file%d.txt' % index)  
30.    archive.close()  
31.    wrapper = FileWrapper(temp)  
32.    response = HttpResponse(wrapper, content_type='application/zip')  
33.    response['Content-Disposition'] = 'attachment; filename=test.zip' 
34.    response['Content-Length'] = temp.tell()  
35.    temp.seek(0)  
36.    return response

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/zhangzhenhu/archive/2011/01/27/6165917.aspx