Python脚本POST上传数据以及文件

#/usr/bin/python
#author Yee <[email protected]>
#coding=utf-8

import sys,os,urllib2
import mimetypes
import mimetools

def get_content_type(filepath):
	return mimetypes.guess_type(filepath)[0] or 'application/octet-stream'

def encode_multipart_formdata(fields, files = {}):
	boundary = mimetools.choose_boundary()
	CRLF = '\r\n'
	data = []
	for key in fields:
		data.append('--' + boundary)
		data.append('Content-Disposition: form-data; name="' + key + '"')
		data.append('')
		data.append(fields[key])
	for key in files:
		data.append('--' + boundary)
		data.append('Content-Disposition: form-data; name="'+ key +'"; filename="'+ files[key]['filename'] + '"')
		data.append('Content-Type: "' + files[key]['type'] + '"')
		data.append('')
		data.append(files[key]['filedata'])
	data.append('--' + boundary + '--')
	data.append('')
	body = CRLF.join(data)
	content_type = 'multipart/form-data; boundary=%s' % boundary
	return {'content_type':content_type,'body':body}

def http_call(url,params,files = {}):
	params = encode_multipart_formdata(params, files)
	req = urllib2.Request(url, data = params['body'])
	if  params['content_type']:
		req.add_header('Content-Type',params['content_type'])   
	resp = urllib2.urlopen(req)
	body = resp.read()
	return body
	
def httpopenfile(url):
	filedata = urllib2.urlopen(url)
	data = filedata.read()
	fileinfo = filedata.info()
	if fileinfo.has_key("Content-Length"):
		filesize = fileinfo["Content-Length"]
	else:
		filesize = 0
	filename = os.path.basename(url)
	filetype = get_content_type(filename)
	fileInfo = {'filename':filename,'size':filesize,'type':filetype,'filedata':data}
	return fileInfo
	
	
def sendwb(url,data,imgpath = ''):
	if imgpath != '':
		file = httpopenfile(imgpath)
		ret = http_call(url,data,files = {'file':file})
		return;
	ret = http_call(url,data)