get请求

res = requests.get(url)
res = requests.get(url, parameter, headers)

post请求

res = requests.post(url, json=data, headers)

requests.session发送请求

• session发送请求的话，和用户手动点击页面是一样的，session会把上一个请求的数据带入到下一个。
• 例如一些登陆接口，经常都是通过session请求因为它会保留上下文会话信息，而requests.post是单次请求不会记录任何东西

import requests


# 通用方法，获取cas登录之后service对应的ticket
class CasLogin(object):
    CAS_LOGIN_URL = HostsEnum.CasLoginUrl.value

    @classmethod
    def getLoginTicket(cls, service, username, password):
        cas_session = request.session()
        page = cas_session.get(cas_login_url, headers)
        info = re.search(
            '(?s)统一用户认证中心.+?action="(?P<action>.+?)".+?name="lt" value="(?P<lt>.+?)".+?name="_eventId" '
            'value="(?P<_eventId>.+?)".+?name="iddds" value="(?P<iddds>.+?)"',
            page.text,
        ).groupdict()

         # 2、post请求cas登录接口，获取登录成功后cas返回的ticket
        cas_login_data = {
            "action": info["action"],
            "lt": info["lt"],
            "_eventId": info["_eventId"],
            "qrcodeId": "",
            "iddds": info["iddds"],
            "username": username,
            "password": password,
            "verifyCode": "1",
            # "keyid": keyid  # 可以不传keyid
        }
        resp = cas_session.post(
            cls.CAS_LOGIN_URL,
            params={"service": service},
            data=cas_login_data,
            headers={"Content-Type": "application/x-www-form-urlencoded"},
            allow_redirects=False,
        )
        location = resp.headers.get("Location")
        if "ticket" in location:
            # print("获取cas登录ticket成功。", location)
            # 返回ticket
            return resp.headers.get("Location").split("=")[-1]
        else:
            print("获取cas登录ticket失败。", location)
            return ""