调用阿里云API 的demo示例（java/python）

  1 import os, sys
  2 import hashlib
  3 import hmac
  4 import base64
  5 import urllib
  6 import time
  7 import uuid
  8 import requests
  9 
 10 
 11 def get_iso8601_time():
 12     ‘‘‘返回iso8601格式的时间‘‘‘
 13     TIME_ZONE = "GMT"
 14     FORMAT_ISO8601 = "%Y-%m-%dT%H:%M:%SZ"
 15     return time.strftime(FORMAT_ISO8601, time.gmtime())
 16 
 17 
 18 def get_uuid():
 19     ‘‘‘返回uuid‘‘‘
 20     return str(uuid.uuid4())
 21 
 22 
 23 def get_parameters(user_param, Action, AccessKeyId, Version):
 24     ‘‘‘
 25     拼接参数字典
 26     user_param: {"RegionId":"cn-beijing", "LoadBalancerName":"test-node1", "AddressType":"intranet", "VSwitchId":"vsw-2zevjlczuvp2mkhhch12x"}
 27     Action操作例如:CreateLoadBalancer
 28     AccessKeyId：access key ID
 29     Version: 接口的版本
 30     ‘‘‘
 31     parameters = {}
 32     parameters[‘HTTPMethod‘] = ‘GET‘
 33     parameters[‘AccessKeyId‘] = AccessKeyId
 34     parameters[‘Format‘] = ‘json‘
 35     parameters[‘Version‘] = Version
 36     parameters[‘SignatureMethod‘] = ‘HMAC-SHA1‘
 37     parameters[‘Timestamp‘] = get_iso8601_time()
 38     parameters[‘SignatureVersion‘] = ‘1.0‘
 39     parameters[‘SignatureNonce‘] = get_uuid()
 40     parameters[‘Action‘] = Action
 41     for (k, v) in sorted(user_param.items()):
 42         parameters[k] = v
 43     return parameters
 44 
 45 
 46 def get_param(parameters):
 47     ‘‘‘把公共参数拼接成字符串‘‘‘
 48     param_str = ‘‘
 49     for (k, v) in sorted(parameters.items()):
 50         param_str += "&" + urllib.quote(k, safe=‘‘) + "=" + urllib.quote(v, safe=‘‘)
 51     param_str = param_str[1:]
 52     return param_str
 53 
 54 
 55 def get_StringToSign(parameters, param_str):
 56     ‘‘‘拼接生成签名的字符串‘‘‘
 57     StringToSign = parameters[‘HTTPMethod‘] + "&%2F&" + urllib.quote(param_str, safe=‘‘)
 58     return StringToSign
 59 
 60 
 61 def get_signature(StringToSign, AccessKeySecret):
 62     ‘‘‘构建签名‘‘‘
 63     h = hmac.new(AccessKeySecret, StringToSign, hashlib.sha1)
 64     signature = base64.encodestring(h.digest()).strip()
 65     return signature
 66 
 67 
 68 def build_request(server_url, param_str, signature, AccessKeySecret):
 69     ‘‘‘拼接url并进行请求‘‘‘
 70     Signature = "Signature=" + urllib.quote(signature)
 71     param = param_str + "&" + Signature
 72     request_url = server_url + param
 73     s = requests.get(request_url)
 74     print s.content
 75     print s
 76     return s
 77 
 78 def get_regions(server_url, Action, user_param, AccessKeySecret, AccessKeyId, Version):
 79     ‘‘‘对请求进行模块
 80     server_url： slb.aliyun.com
 81     Action = ‘DescribeRegions‘
 82     AccessKeySecret, AccessKeyId:也就是ak
 83     user_param = {‘LoadBalancerId‘: ‘lb-2zekxu2elibyexxoo9hlw‘}
 84     Version:例如slb的版本是2014-05-15,每个服务都不相同
 85     ‘‘‘
 86     server_url = ‘https://‘ + server_url + ‘/?‘
 87     AccessKeySecret = AccessKeySecret
 88     AccessKeyId = AccessKeyId
 89     parameters = get_parameters(user_param, Action, AccessKeyId, Version)
 90     param_str = get_param(parameters)
 91     StringToSign = get_StringToSign(parameters, param_str)
 92     signature = get_signature(StringToSign, AccessKeySecret + ‘&‘)
 93     Message = build_request(server_url, param_str, signature, AccessKeySecret)
 94     return Message
 95 
 96 
 97 
 98 create slb
 99 Action = ‘DescribeRegions‘
100 user_param = {}
101 server_url = ‘vpc.aliyuncs.com‘
102 Version = ‘2016-04-28‘
103 AccessKeySecret=‘EzuF6gOmgMgaagzvKOXeMRP6m92zB9‘
104 AccessKeyId=‘LTAI0iQLAL16wPTF‘
105 message = get_regions(server_url, Action, user_param, AccessKeySecret, AccessKeyId, Version)
106 print "======================%s" %message
107 print "********************%s" %message.content