Python - 多部分表单发布数据

Question

这是我在这个论坛中的第一个问题。我想使用多部分表单数据POST（使用PUT方法）数据。我在doughellmann.com.tw中找到了Multipart Post Form Data代码的代码，它适用于发布数据。我蚂蚁添加我的参数在PUT方法，我试了一下。这回不回....你能否帮这个家伙的帮助....

代码

# This Script is used for upload API Calls 
# This script would be inherited under Device API 
# 

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://192.1681.2/1.0/api/filecontents') 
    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) 
    regparams={'restMethod' : 'PUT' ,'HTTP_RANGE' :'10-20' } 
    print 
    print 'OUTGOING DATA:' 
    print request.get_data() 
    params = urllib.urlencode(regparams) 
    print 
    print 'SERVER RESPONSE:' 
    print urllib2.urlopen(request,params).read() 

Answer 1

你应该考虑使用requests模块，发送使用requests文件是只有几行代码：

>>> url = 'http://httpbin.org/post' 
>>> files = {'file': open('report.xls', 'rb')} 

>>> r = requests.post(url, files=files)