先說session吧：眾所周知http請求是無狀態的，需要靠session來維持會話，而session與cookie又緊密聯絡通過儲存在cookie裡面的sessionid；接下來講如何利用這一機制傳送請求

"""pt:1session保持傳送登陸後的介面請求"""
# coding=utf-8
import json
import requests
import unittest
class Test(unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        data = {"userAccount": "admin", "loginPwd": "123456"}
        global session
        s = requests.session()
        s.post(url="http://192.168.229.128:8080/cms/manage/loginJump.do", data=data)
        session =s
    @classmethod
    def tearDownClass(cls):
        pass

    def test_session(self):
        datas = {'userName': 'zhangsan', 'userEmail': '
 
[email protected]',
                 'userMobile': '18871027706', 'userSex': '1','userAccount': 'dev', 'confirmPwd': '123456', 'loginPwd': '123456', 'id': ''}
        conn = session.post(url="http://192.168.229.128:8080/cms/manage/saveSysUser.do", data=datas)
        print conn.content
if __name__ == "__main__":
    unittest.main()
結果如下：
C:\Python27\python.exe "D:\Pycharm\PyCharm 5.0.4\helpers\pycharm\utrunner.py" C:\Users\Administrator\PycharmProjects\py3project\interface\Paramters\toy.py true
Testing started at 20:38 ...
{"code":"400","msg":"儲存使用者資訊失敗,登入帳號已存在！","model":{}}

到這裡有人會說學過類我不想用全域性，不喜歡或者怕全域性亂用影響指令碼
沒錯寫過類就用類啊那就用類啊來啊互相傷害啊
"""pt2:用類傳session"""":
# coding=utf-8
import json
import requests
import unittest
class Test(unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        data = {"userAccount": "admin", "loginPwd": "123456"}
        s = requests.session()
        s.post(url="http://192.168.229.128:8080/cms/manage/loginJump.do", data=data)
        cls.session = s
    @classmethod
    def tearDownClass(cls):
        pass

    def test_session(self):
        datas = {'userName': 'zhangsan', 'userEmail': '
 
[email protected]',
                 'userMobile': '18871027706', 'userSex': '1','userAccount': 'dev', 'confirmPwd': '123456', 'loginPwd': '123456', 'id': ''}
        """在哪裡，在哪裡見過你"""
        conn = self.session.post(url="http://192.168.229.128:8080/cms/manage/saveSysUser.do", data=datas)
        print conn.content
if __name__ == "__main__":
    unittest.main()
"""pt3:用cookie請求介面""""：
import requests
import json
import unittest


class Interface(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        req = requests.post(url="http://192.168.229.128:8080/cms/manage/loginJump.do",
                            data={"userAccount": "admin", "loginPwd": "123456"})
        global cookie
        cookie = req.cookies.get_dict()

    @classmethod
    def tearDownClass(cls):
        pass

    def test_login(self):
        u"登入平臺介面"
        req = requests.post(url="http://192.168.229.128:8080/cms/manage/loginJump.do",
                            data={"userAccount": "admin", "loginPwd": "123456"})
        dicts = json.loads(req.content)
        try:
            self.assertEqual(dicts['msg'], u"登入成功！", "status:200")
        except AssertionError as e:
            print(e)
        else:
            results = req.json()
            print(json.dumps(results, sort_keys=True, indent=2, separators=(',', ': '), encoding="UTF-8", ensure_ascii=False))

    def test_cookie_request(self):
        u"儲存使用者介面"
        datas = {'userName': 'zhangsan', 'userEmail': '
 
[email protected]',
                 'userMobile': '18871027706', 'userSex': '1','userAccount': 'dev', 'confirmPwd': '123456', 'loginPwd': '123456', 'id': ''}
        conn = requests.post(url="http://192.168.229.128:8080/cms/manage/saveSysUser.do", data=datas, cookies=cookie)
        result = conn.json()
        print(json.dumps(result, encoding="UTF-8", ensure_ascii=False, sort_keys=True, indent=2, separators=(',', ': ')))

#
# if __name__ == "__main__":
#     unittest.main()

""""pt4:補充點小故事：""""
解決下大家的介面返回亂碼問題：
通常我們寫介面
data = {"userAccount": "admin", "loginPwd": "123456"}
response =requests.post(url='xxx', data =json.dumps(data),header ={"xx": "xxx"})
或者response =requests.post(url='xxx', json=data ,header ={"xx": "xxx"})
都是處理json型別請求格式亂碼很好的解決辦法
還可以這樣解決見我另一篇文章：	https://blog.csdn.net/chen498858336/article/details/83795742