如何使用发布多部分/表单数据的请求来排列数据和文件的顺序? [英] How to arrange the order of data and file using requests to post multipart/form-data?
问题描述
我想在数据前面排列文件.如果尝试传统方式,数据将显示在文件前面.更具体地说,我希望myfile
出现在form_value
之前.
I want to arrange file in front of data. If I try the traditional way, the data appears in front of file. To be more specifically, I want myfile
to appear before form_value
.
form_value={'exp':'python', 'ptext':'text', 'board':'Pictures'}
myfile = {'up': ('aa.png', open('aa.png', 'rb'), 'image/png')}
r = requests.post(url, files=myfile, data=form_value, cookies=cookie)
结果
Content-Type: multipart/form-data; boundary=170e4a5db6d74d5fbb384dfd8f2d33ce
--170e4a5db6d74d5fbb384dfd8f2d33ce
Content-Disposition: form-data; name="ptext"
text
--170e4a5db6d74d5fbb384dfd8f2d33ce
Content-Disposition: form-data; name="board"
Pictures
--170e4a5db6d74d5fbb384dfd8f2d33ce
Content-Disposition: form-data; name="exp"
python
--170e4a5db6d74d5fbb384dfd8f2d33ce
Content-Disposition: form-data; name="up"; filename="aa.png"
Content-Type: image/png
推荐答案
requests
总是将files
放在data
之后,但是您可以将data
参数添加到files
参数中.
requests
always places files
after data
, but you can add your data
parameters to the files
argument instead.
然后,您必须使用带有键值元组的列表,而不是字典,以保留顺序.并且您需要提供文件名和内容类型条目作为None
,以确保requests
不会尝试为您提供错误的标题:
You then do have to use a list with key-value tuples, instead of a dictionary, to preserve order. And you need to provide the filename and content type entries as None
to make sure that requests
doesn't try and give you the wrong headers:
files = [
('up', ('aa.png', open('aa.png', 'rb'), 'image/png')),
('exp', (None, 'python', None)),
('ptext', (None, 'text', None)),
('board', (None, 'Pictures', None)),
]
r = requests.post(url, files=files, cookies=cookie)
这将产生:
Content-Type: multipart/form-data; boundary=6f9d948e26f140a289a9e8297c332a91
--0ca5f18576514b069c33bc436ce6e2cd
Content-Disposition: form-data; name="up"; filename="aa.png"
Content-Type: image/png
[ .. image data .. ]
--0ca5f18576514b069c33bc436ce6e2cd
Content-Disposition: form-data; name="exp"
python
--0ca5f18576514b069c33bc436ce6e2cd
Content-Disposition: form-data; name="ptext"
text
--0ca5f18576514b069c33bc436ce6e2cd
Content-Disposition: form-data; name="board"
Pictures
--0ca5f18576514b069c33bc436ce6e2cd--
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