python爬虫之urllib_post请求

1.测试接口：https://httpbin.org/post

from urllib import parse,request

url = 'https://httpbin.org/post'

2.表单数据

fordata = {
'name':'红红火火',
'age':18,
'gender':'男'
}

3.先使用urlencode将参数转为url编码格式的字符串,

4.然后在使用encode()方法将字符串转为bytes类型的参数

formdata = parse.urlencode(fordata).encode('utf-8')

5.不需要添加请求头

response = request.urlopen(url,data=formdata)
print(response.status)
print(response.read().decode('utf-8'))

6.需要设置请求头

red_header = {
'User-Agent':'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36'
}
req = request.Request(url,headers=red_header,data=formdata)
response = request.urlopen(req)
print(response.status)
print(response.read().decode('utf-8'))