上传文件¶
There are two parts necessary for handling file uploads. The first is to make sure you have a form that's been setup correctly to accept files. This means adding enctype
attribute to your form
element with the value of multipart/form-data
. A very simple example would be a form that accepts an mp3 file. Notice we've setup the form as previously explained and also added an input
元素 file
类型。
1<form action="/store_mp3_view" method="post" accept-charset="utf-8"
2 enctype="multipart/form-data">
3
4 <label for="mp3">Mp3</label>
5 <input id="mp3" name="mp3" type="file" value="" />
6
7 <input type="submit" value="submit" />
8</form>
The second part is handling the file upload in your view callable (above, assumed to answer on /store_mp3_view
)The uploaded file is added to the request object as a cgi.FieldStorage
object accessible through the request.POST
多重字典。The two properties we're interested in are the file
和 filename
我们将使用它们将文件写入磁盘:
1import os
2import shutil
3
4from pyramid.response import Response
5
6def store_mp3_view(request):
7 # ``filename`` contains the name of the file in string format.
8 #
9 # WARNING: Internet Explorer is known to send an absolute file
10 # *path* as the filename. This example is naive; it trusts
11 # user input.
12 filename = request.POST['mp3'].filename
13
14 # ``input_file`` contains the actual file data which needs to be
15 # stored somewhere.
16 input_file = request.POST['mp3'].file
17
18 # Using the filename like this without cleaning it is very
19 # insecure so please keep that in mind when writing your own
20 # file handling.
21 file_path = os.path.join('/tmp', filename)
22 with open(file_path, 'wb') as output_file:
23 shutil.copyfileobj(input_file, output_file)
24
25 return Response('OK')