Python爬虫入门必学知识：Requests的三种参数请求方式

URL参数请求：

import requests
 
'''
URL Parameters 请求方式： URL参数
例如： 以get 方式请求http://httpbin.org/get?first_name=hello&last_name=word
 
'''
# params={"first_name":"hello","last_name":"word"}
# responds=requests.get("http://httpbin.org/get",params=params)
# print(responds.text)
# print(responds.url)

表单参数请求：

表单参数提交,注意只更新的是表单数据
Content-Type: application/x-www-form-urlencoded
例如： 以post 方式请求http://httpbin.org/post， 增加的资源为params={"first_name":"hello","last_name":"word"}

'''
params={"first_name":"hello","last_name":"word"}
headers={"Content-Tpye":"application/x-www-form-urlencoded"}
responds=requests.post("http://httpbin.org/post",data=params,headers=headers)
print(responds.text)
print(responds.url)
print(responds.request)

Json 参数数据请求

Json数据提交，更新的是数据data
Content-Type: application/json
例如： 以post 方式请求http://httpbin.org/post， 增加的资源为params={"first_name":"hello","last_name":"word"}

params={"first_name":"hello","last_name":"word"}
headers={"Content-Tpye":"application/json"}
responds=requests.post("http://httpbin.org/post",json=params,headers=headers)
print(responds.text)
print(responds.url)
print(responds.request)

额外话题–构建URL

def build_url(URL,endpoint):
    return "/".join([URL,endpoint])
print(build_url("http://httpbin.org","post"))