import itertools import mimetools import mimetypes from cStringIO import StringIO import urllib import urllib2 class MultiPartForm(object): """Accumulate the data to be used when posting a form.""" def __init__(self): self.form_fields = [] self.files = [] self.boundary = mimetools.choose_boundary() return def get_content_type(self): return 'multipart/form-data; boundary=%s' % self.boundary def add_field(self, name, value): """Add a simple field to the form data.""" self.form_fields.append((name, value)) return def add_file(self, fieldname, filename, fileHandle, mimetype=None): """Add a file to be uploaded.""" body = fileHandle.read() if mimetype is None: mimetype = mimetypes.guess_type(filename)[0] or 'application/octet-stream' self.files.append((fieldname, filename, mimetype, body)) return def __str__(self): """Return a string representing the form data, including attached files.""" # Build a list of lists, each containing "lines" of the # request. Each part is separated by a boundary string. # Once the list is built, return a string where each # line is separated by '\r\n'. parts = [] part_boundary = '--' + self.boundary # Add the form fields parts.extend( [ part_boundary, 'Content-Disposition: form-data; name="%s"' % name, '', value, ] for name, value in self.form_fields ) # Add the files to upload parts.extend( [ part_boundary, 'Content-Disposition: file; name="%s"; filename="%s"' % \ (field_name, filename), 'Content-Type: %s' % content_type, '', body, ] for field_name, filename, content_type, body in self.files ) # Flatten the list and add closing boundary marker, # then return CR+LF separated data flattened = list(itertools.chain(*parts)) flattened.append('--' + self.boundary + '--') flattened.append('') return '\r\n'.join(flattened) if __name__ == '__main__': # Create the form with simple fields form = MultiPartForm() form.add_field('firstname', 'Doug') form.add_field('lastname', 'Hellmann') # Add a fake file form.add_file('biography', 'bio.txt', fileHandle=StringIO('Python developer and blogger.')) # Build the request request = urllib2.Request('http://localhost:8080/') request.add_header('User-agent', 'PyMOTW (http://www.doughellmann.com/PyMOTW/)') body = str(form) request.add_header('Content-type', form.get_content_type()) request.add_header('Content-length', len(body)) request.add_data(body) print print 'OUTGOING DATA:' print request.get_data() print print 'SERVER RESPONSE:' print urllib2.urlopen(request).read()
참고:
https://pymotw.com/2/urllib2/
