前言
???????在上一期《當(dāng)你接觸到了Requests類庫(kù),你就已經(jīng)掌握了Python接口自動(dòng)化測(cè)試框架的終極奧義》中介紹了Requests的終極奧義。這期將進(jìn)行終極奧義-Requests的實(shí)戰(zhàn)示例。
使用到的工具
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編程語(yǔ)言:?Python 3.8
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編譯器:??Pycharm
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Python類: ?Requests
1. 基礎(chǔ)用法requests.post
???????以比較常見(jiàn)的POST類型接口為例,進(jìn)行標(biāo)準(zhǔn)的接口請(qǐng)求。
import json
import requests
# 系統(tǒng)域名
sys_host = 'https://******.******.com'
# 接口路徑
api_path = '/api/users/login'
# 接口請(qǐng)求頭
headers = {
'Accept': '*/*',
'Accept-Encoding': 'gzip, deflate, br',
'accept-language': 'zh',
'Connection': 'keep-alive',
'Content-Length': '62',
'Content-Type': 'application/json; charset=utf-8',
'Host': '******.******.com',
'Origin': 'https://******.******.com',
'sec-ch-ua': '"Microsoft Edge";v="111", "Not(A:Brand";v="8", "Chromium";v="111"',
'sec-ch-ua-mobile': '?0',
'sec-ch-ua-platform': '"Windows"',
'Sec-Fetch-Dest': 'empty',
'Sec-Fetch-Mode': 'cors',
'Sec-Fetch-Site': 'same-origin',
'token': '',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 Edg/111.0.1661.62'
}
# POST請(qǐng)求報(bào)文
request = {
"username": "******.******@******.******",
"password": "************"
}
# 執(zhí)行接口請(qǐng)求,接受返回信息
response = requests.post(url=sys_host + api_path, data=json.dumps(request), headers=headers)
print('response: %s' % response)
# 將返回信息處理成json格式
response_json = response.json()
print('response_json(單引號(hào)): %s' % response_json)
# 將返回信息處理成雙引號(hào)的json格式(方便數(shù)據(jù)格式化操作)
response_json_2 = json.dumps(response_json)
print('response_json(雙引號(hào)): %s' % response_json_2)
# 將返回信息處理成雙引號(hào)的json格式(處理中文編碼格式)
response_json_3 = json.dumps(response_json, ensure_ascii=False)
print('response_json(雙引號(hào))(中文格式處理): %s' % response_json_3)

2. 處理接口返回信息response.status_code
import json
import requests
# 系統(tǒng)域名
sys_host = 'https://******.******.com'
# 接口路徑
api_path = '/api/users/login'
# 接口請(qǐng)求頭
headers = {
# 'Accept': '*/*',
# 'Accept-Encoding': 'gzip, deflate, br',
'accept-language': 'zh',
# 'Connection': 'keep-alive',
# 'Content-Length': '62',
'Content-Type': 'application/json; charset=utf-8',
# 'Host': '******.******.com',
# 'Origin': 'https://******.******.com',
# 'sec-ch-ua': '"Microsoft Edge";v="111", "Not(A:Brand";v="8", "Chromium";v="111"',
# 'sec-ch-ua-mobile': '?0',
# 'sec-ch-ua-platform': '"Windows"',
# 'Sec-Fetch-Dest': 'empty',
# 'Sec-Fetch-Mode': 'cors',
# 'Sec-Fetch-Site': 'same-origin',
# 'token': '',
# 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 Edg/111.0.1661.62'
}
# POST請(qǐng)求報(bào)文
request = {
"username": "******.******@******.******",
"password": "************"
}
# 執(zhí)行接口請(qǐng)求,接受返回信息
response = requests.post(url=sys_host + api_path, data=json.dumps(request), headers=headers)
print('response: %s' % response)
# 接口返回狀態(tài)碼
print('status_code: %s' % response.status_code)
# 接口編碼方式
print('encoding: %s' % response.encoding)
# 將返回信息處理成json格式
response_json = response.json()
print('response_json(單引號(hào)): %s' % response_json)
# 獲取接口自定義的狀態(tài)碼值
code = response_json['code']
print('code: %s' % code)
# 獲取接口自定義的信息
msg = response_json['msg']
print('msg: %s' % msg)
# 獲取接口返回信息中token信息
sys_token = response_json['data']['token']
print('sys_token: %s' % sys_token)

在上面的示例中:
1)以POST類型接口為例,我們簡(jiǎn)化了headers信息,因?yàn)榇蠖鄶?shù)接口在進(jìn)行鑒權(quán)時(shí),只需要提供關(guān)鍵的key:value即可
2)通過(guò)response.status_code接受http請(qǐng)求的返回狀態(tài),例如200則表示請(qǐng)求成功
3)通過(guò)response.encoding接受http請(qǐng)求的相應(yīng)內(nèi)容編碼方式
3)通過(guò)response_json[field_name1][field_name2]接受http請(qǐng)求的相應(yīng)節(jié)點(diǎn)下的字段值
3.字段值斷言Assert
import json
import requests
# 系統(tǒng)域名
sys_host = 'https://******.******.com'
# 接口路徑
api_path = '/api/users/login'
# 接口請(qǐng)求頭
headers = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# POST請(qǐng)求報(bào)文
request = {
"username": "******.******@******.******",
"password": "************"
}
# 執(zhí)行接口請(qǐng)求,接受返回信息
response = requests.post(url=sys_host + api_path, data=json.dumps(request), headers=headers)
print('response: %s' % response)
# 將返回信息處理成json格式
response_json = response.json()
print('response_json: %s' % response_json)
# 獲取接口自定義的狀態(tài)碼值
code = response_json['code']
print('code: %s' % code)
# 獲取接口自定義的信息
msg = response_json['msg']
print('msg: %s' % msg)
# 獲取接口返回信息中token信息
sys_token = response_json['data']['token']
print('sys_token: %s' % sys_token)
# 接口字段值進(jìn)行斷言
assert code == 0
assert msg == '操作成功'
assert sys_token
assert sys_token == '1111'

常用斷言方式
assert xx :判斷 xx 為真
assert not xx :判斷 xx 不為真
assert a in b :判斷 b 包含 a
assert a == b :判斷 a 等于 b
assert a != b :判斷 a 不等于 b
4. GET類型接口requests.get(),接口數(shù)據(jù)傳遞
import json
import requests
# 系統(tǒng)域名
sys_host = 'https://******.******.com'
"""
用戶登錄接口
"""
# 接口路徑
api_path_login = '/api/users/login'
# 接口請(qǐng)求頭
headers_login = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# 請(qǐng)求報(bào)文
headers_login = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# 執(zhí)行接口請(qǐng)求,接受返回信息
response_login = requests.post(url=sys_host + api_path_login,
data=json.dumps(request_login),
headers=headers_login)
# 將返回信息處理成json格式
response_json_login = response_login.json()
print('response_json_login: %s' % response_json_login)
# 獲取接口返回信息中token信息
sys_token = response_json_login['data']['token']
print('sys_token: %s' % sys_token)
"""
simple接口
"""
# 接口路徑
api_path_simple = '/api/apps/simple'
# 接口請(qǐng)求頭
headers_simple = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# 接口數(shù)據(jù)傳遞至請(qǐng)求頭
headers_simple.setdefault('token', sys_token)
print('headers_simple: %s' % headers_simple)
# 執(zhí)行接口請(qǐng)求,接受返回信息
response_simple = requests.get(url=sys_host + api_path_simple,
headers=headers_simple)
# 將返回信息處理成json格式
response_json_simple = response_simple.json()
print('response_json_simple: %s' % response_json_simple)
# 獲取接口自定義的狀態(tài)碼值
code = response_json_simple['code']
print('code: %s' % code)
# 獲取接口自定義的信息
msg = response_json_simple['msg']
print('msg: %s' % msg)
# 獲取接口返回信息中對(duì)應(yīng)字段信息
data = response_json_simple['data']
print('len(data): %d' % len(data))
# 接口字段值進(jìn)行斷言
assert code == 0
assert msg == '操作成功'
assert len(data) > 0

在上面的示例中:
1)requests.get(url=sys_host + api_path_simple,headers=headers_simple) 進(jìn)行g(shù)et類型接口的執(zhí)行
2)headers_simple.setdefault('token', sys_token),將登錄接口中的token傳遞到get接口請(qǐng)求頭中
5. POST接口請(qǐng)求體中數(shù)據(jù)傳遞
import json
import requests
# 系統(tǒng)域名
sys_host = 'https://******.******.com'
"""
用戶登錄接口
"""
# 接口路徑
api_path_login = '/api/users/login'
# 請(qǐng)求方式
method_login = 'post'
# 接口請(qǐng)求頭
headers_login = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# 請(qǐng)求報(bào)文
request_login = {
"username": "******.******@******.******",
"password": "************"
}
# 執(zhí)行接口請(qǐng)求,接受返回信息
response_login = requests.Session().request(method=method_login,
url=sys_host + api_path_login,
data=json.dumps(request_login),
headers=headers_login)
# 將返回信息處理成json格式
response_json_login = response_login.json()
print('response_json_login: %s' % response_json_login)
# 獲取接口返回信息中token信息
sys_token = response_json_login['data']['token']
print('sys_token: %s' % sys_token)
"""
simple接口
"""
# 接口路徑
api_path_simple = '/api/apps/simple'
# 請(qǐng)求方式
method_simple = 'get'
# 接口請(qǐng)求頭
headers_simple = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# 接口數(shù)據(jù)傳遞至請(qǐng)求頭
headers_simple.setdefault('token', sys_token)
print('headers_simple: %s' % headers_simple)
# 執(zhí)行接口請(qǐng)求,接受返回信息
response_simple = requests.Session().request(method=method_simple,
url=sys_host + api_path_simple,
headers=headers_simple)
# 將返回信息處理成json格式
response_json_simple = response_simple.json()
print('response_json_simple: %s' % response_json_simple)
# 獲取接口返回信息中對(duì)應(yīng)字段值
code_simple = response_json_simple['code']
msg_simple = response_json_simple['msg']
data_simple = response_json_simple['data']
# 接口字段值進(jìn)行斷言
assert code_simple == 0
assert msg_simple == '操作成功'
assert len(data_simple) > 0
"""
verify接口
"""
# 接口路徑
api_path_verify = '/api/users/verify'
# 請(qǐng)求方式
method_verify = 'post'
# 接口請(qǐng)求頭
headers_verify = {
'accept-language': 'zh',
'Content-Type': 'application/json; charset=utf-8'
}
# 接口數(shù)據(jù)傳遞至請(qǐng)求頭
headers_verify.setdefault('token', sys_token)
# 接口數(shù)據(jù)傳遞至請(qǐng)求報(bào)文
request_verify = {
"token": sys_token
}
# 執(zhí)行接口請(qǐng)求,接受返回信息
response_verify = requests.Session().request(method=method_verify,
url=sys_host + api_path_verify,
data=json.dumps(request_verify),
headers=headers_verify)
# 將返回信息處理成json格式
response_json_verify = response_verify.json()
print('response_json_verify: %s' % response_json_verify)
# 獲取接口返回信息中對(duì)應(yīng)字段值
code_verify = response_json_simple['code']
msg_verify = response_json_simple['msg']
data_verify = response_json_simple['data']
# 接口字段值進(jìn)行斷言
assert code_verify == 0
assert msg_verify == '操作成功'
assert data_verify is not None

在上面的示例中:
1)login接口登錄后,將接口返回信息中的token給sys_token
2)通過(guò)headers_simple.setdefault('token', sys_token),request_verify = {"token": sys_token},可以將登錄接口中的token傳遞到get接口請(qǐng)求頭中,或者傳遞給post接口的請(qǐng)求體中。
總結(jié)
???????常用的接口類型為post、get,通過(guò)獲取接口返回信息中的關(guān)鍵字段信息,賦值給全局變量,方便其他接口在請(qǐng)求頭/請(qǐng)求體中進(jìn)行數(shù)據(jù)傳遞,針對(duì)返回信息,可以使用assert進(jìn)行字段值的斷言。