最近刚学python,遇到上传下载文件功能需求，记录下！

django web项目，前端上传控件用的是uploadify。

文件上传 - 后台view 的 Python代码如下：

@csrf_exempt

@require_http_methods(["POST"])

def uploadFiles(request):

try:

user = request.session.get('user')

allFimeNames = ""

#获取所有上传文件

files = request.FILES.getlist("file")

for file in files:

# 获取文件名 解析文件后缀 获取新文件名

oldName = file.name

filename = str(int(time.time() * 10))+"."+oldName.split(".")[1]

now = datetime.now()

filePath = os.path.join("developmentTask",str(user.get("userId"))+"-"+now.strftime('%Y-%m-%d'))

dirpath = os.path.join(settings.UPLOADFILES_DIRS , filePath)

#写入服务器

if not os.path.exists(dirpath):

os.makedirs(dirpath)

newFilePath = os.path.join(dirpath, filename)

with open(newFilePath, 'wb+') as destination:

for chunk in file.chunks():

destination.write(chunk)

#返回新文件名 多个用逗号隔开

allFimeNames = os.path.join(filePath,filename)

except Exception:

return JsonResponse(data={'error': "系统异常"}, status=400)

return JsonResponse(data={'filePath': allFimeNames})

request.FILES.getlist("file")此处的file 是前端页面的文件提交的名称，可以在uploadify中配置。

文件下载：

@csrf_exempt

@require_http_methods(["GET"])

def downloadFile(request):

filePath = request.GET.get("filepath")

fileName = request.GET.get("filename")

file_name = os.path.join(settings.UPLOADFILES_DIRS, filePath)

if os.path.exists(file_name):

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(file_name))

response['Content-Type'] = 'application/octet-stream'

response['Content-Disposition'] = 'attachment;filename="{0}"'.format(fileName)

return response

response = StreamingHttpResponse("文件不存在！")

response['Content-Type'] = 'application/octet-stream'

response['Content-Disposition'] = 'attachment;filename="{0}"'.format("")

return response

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

时间： 2017-07-22