Python: Post Request with image files
14,059
Add a this header:
request.add_header("Content-type", "application/x-www-form-urlencoded; charset=UTF-8")
Also, the image parameter you're sending is a string, not the contents of the image file. You need to b64 encode it
import base64
with open("image.jpg", "rb") as image_file:
encoded_image = base64.b64encode(image_file.read())
then use encoded_image
instead of '~/image.jpg
' in raw_params
Comments
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add-semi-colons almost 2 years
I have a server and I am trying to build a post request to get the data back. I think one way to achieve this is to add the parameters in the header and make the request. But I am getting few errors that I don't understand well enough to go forward.
Html Form
<html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body> <form method="POST" action="http://some.server.com:61235/imgdigest" enctype="multipart/form-data"> quality:<input type="text" name="quality" value="2"><br> category:<input type="text" name="category" value="1"><br> debug:<input type="text" name="debug" value="1"><br> image:<input type="file" name="image"><br> <input type="submit" value="Submit"> </form> </body> </html>
Python code: I have edited the question based on the answer
import urllib, urllib2 import base64 if __name__ == '__main__': page = 'http://some.site.com:61235/' with open("~/image.jpg", "rb") as image_file: encoded_image = base64.b64encode(image_file.read()) raw_params = {'quality':'2','category':'1','debug':'0', 'image': encoded_image} params = urllib.urlencode(raw_params) request = urllib2.Request(page, params) request.add_header("Content-type", "application/x-www-form-urlencoded; charset=UTF-8") page = urllib2.urlopen(request) info = page.info()
Errors:
page = urllib2.urlopen(request) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 126, in urlopen return _opener.open(url, data, timeout) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 406, in open response = meth(req, response) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 519, in http_response 'http', request, response, code, msg, hdrs) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 444, in error return self._call_chain(*args) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 378, in _call_chain result = func(*args) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 527, in http_error_default raise HTTPError(req.get_full_url(), code, msg, hdrs, fp) urllib2.HTTPError: HTTP Error 404: Not Found