python -m pip install bs4
from bs4 import BeautifulSoup
from bs4 import BeautifulSoup
2018-02-05
print("第三种方法")
cj = http.cookiejar.CookieJar()
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
urllib.request.install_opener(opener)
response3 = urllib.request.urlopen(url)
print(response3.getcode())
print(cj)
print(response3.read())
cj = http.cookiejar.CookieJar()
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
urllib.request.install_opener(opener)
response3 = urllib.request.urlopen(url)
print(response3.getcode())
print(cj)
print(response3.read())
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print("第二种方法")
request = urllib.request.Request(url)
request.add_header("user-agent", 'Mozilla/5.0')
response2 = urllib.request.urlopen(request)
print(response2.getcode())
print(len(response2.read()))
request = urllib.request.Request(url)
request.add_header("user-agent", 'Mozilla/5.0')
response2 = urllib.request.urlopen(request)
print(response2.getcode())
print(len(response2.read()))
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# coding:utf-8
import urllib.request,http.cookiejar
url = "http://www.baidu.com"
print("第一种方法")
response1 = urllib.request.urlopen(url)
print(response1.getcode())
print(len(response1.read()))
import urllib.request,http.cookiejar
url = "http://www.baidu.com"
print("第一种方法")
response1 = urllib.request.urlopen(url)
print(response1.getcode())
print(len(response1.read()))
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#coding=utf-8
import urllib, http.cookiejar
#创建cookie容器
cj = http.cookiejar.CookieJar()
#创建1个opener
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
#给urlib安装opener
urllib.request.install_opener(opener)
response = urllib.request.urlopen("http://www.baidu.com")
import urllib, http.cookiejar
#创建cookie容器
cj = http.cookiejar.CookieJar()
#创建1个opener
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
#给urlib安装opener
urllib.request.install_opener(opener)
response = urllib.request.urlopen("http://www.baidu.com")
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