闲着没事爬个糗事百科的笑话看看
python3中用urllib.request.urlopen()打开糗事百科链接会提示以下错误
http.client.RemoteDisconnected: Remote end closed connection without response
但是打开别的链接就正常,很奇怪不知道为什么,没办法改用第三方模块requests,也可以用urllib3模块,还有一个第三方模块就是bs4(beautifulsoup4)
最后经过不懈努力,终于找到了为什么,原因就是没有添加headers,需要添加headers,让网站认为是从浏览器发起的请求,这样就不会报错了。
import urllib.request
url = 'http://www.qiushibaike.com/8hr/page/5/'
user_agent = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'
headers = {'User-agent':user_agent}
request = urllib.request.Request(url,headers=headers)
html = urllib.request.urlopen(request)
print(html.read().decode())
requests模块安装和使用,这里就不说了
附上官方链接:http://docs.python-requests.org/en/master/
中文文档:http://cn.python-requests.org/zh_CN/latest/
>>> r = requests.get('https://api.github.com/user', auth=('user', 'pass'))
>>> r.status_code
200
>>> r.headers['content-type']
'application/json; charset=utf8'
>>> r.encoding
'utf-8'
>>> r.text
u'{"type":"User"...'
>>> r.json()
{u'private_gists': 419, u'total_private_repos': 77, ...}
urllib3模块安装和使用,这里也不说了
附上官方链接:https://urllib3.readthedocs.io/en/latest/
>>> import urllib3
>>> http = urllib3.PoolManager()
>>> r = http.request('GET', 'http://httpbin.org/robots.txt')
>>> r.status
200
>>> r.data
'User-agent: *\nDisallow: /deny\n'
bs4模块安装和使用
附上官方链接:https://www.crummy.com/software/BeautifulSoup/
好了,上面三个模块有兴趣的可以自己研究学习下,以下是代码:
爬取糗事百科的段子和图片
import requests
import urllib.request
import re
def get_html(url):
page = requests.get(url)
return page.text
def get_text(html,file):
textre = re.compile(r'content">\n*<span>(.*)</span>')
textlist = re.findall(textre,html)
num = 0
txt = []
for i in textlist:
num += 1
txt.append(str(num)+'.'+i+'\n'*2)
with open(file,'w',encoding='utf-8') as f:
f.writelines(txt)
def get_img(html):
imgre = re.compile(r'<img src="(.*\.JPEG)" alt=',re.IGNORECASE)
imglist = re.findall(imgre,html)
x = 0
for imgurl in imglist:
x += 1
urllib.request.urlretrieve(imgurl, '%s.jpg' % x)
html = get_html("http://www.qiushibaike.com/8hr/page/2/")
get_text(html,'a.txt')
get_img(html)
很简单,欢迎大家吐槽,有兴趣的可以加群一块学习(219636001)