django上传下载大文件

上传

def upFile(file):
    upload_dir = ‘/tmp/upload/%s‘ % username
    if request.method == ‘POST‘:
        upload_file = request.FILES.get(‘file‘, None)

        if upload_file:
            if not os.path.exists(upload_dir):
                os.makedirs(upload_dir)
            filename = ‘%s/%s‘ % (upload_dir, upload_file.name)
            f = open(filename, ‘wb‘)
            for chunk in upload_file.chunks():
                f.write(chunk)
            f.close()

下载

import os, tempfile, zipfile
from django.http import HttpResponse
from django.core.servers.basehttp import FileWrapper

def send_file(request):
    """
    Send a file through Django without loading the whole file into
    memory at once. The FileWrapper will turn the file object into an
    iterator for chunks of 8KB.
    """
    filename = __file__ # Select your file here.
    wrapper = FileWrapper(file(filename))
    response = HttpResponse(wrapper, content_type=‘text/plain‘)
    response[‘Content-Length‘] = os.path.getsize(filename)
    return response

def send_zipfile(request):
    """
    Create a ZIP file on disk and transmit it in chunks of 8KB,
    without loading the whole file into memory. A similar approach can
    be used for large dynamic PDF files.
    """
    temp = tempfile.TemporaryFile()
    archive = zipfile.ZipFile(temp, ‘w‘, zipfile.ZIP_DEFLATED)
    for index in range(10):
        filename = __file__ # Select your files here.
        archive.write(filename, ‘file%d.txt‘ % index)
    archive.close()
    wrapper = FileWrapper(temp)
    response = HttpResponse(wrapper, content_type=‘application/zip‘)
    response[‘Content-Disposition‘] = ‘attachment; filename=test.zip‘
    response[‘Content-Length‘] = temp.tell()
    temp.seek(0)
    return response