之前，我们爬取的小说，虽然说爬取15MB大小的小说，也是可以的，但是速度太慢，而且容易被封。所以，这次在前面的基础上做改良。
仅供学习使用！不作商业用途，侵权删
这次想要爬取这一个小说（虽然不是在起点上动手）
这个小说字数在545.2万，估计爬取的难度还是很大的（按照之前的那种爬取方案，估计没几个小时我是不相信的...）
- 没有看过 步骤一 的朋友们可以点击下面的链接看看步骤一先
点击查看步骤一 - 没有看过 步骤二 的朋友们可以点击下面的链接看看步骤二先
点击查看步骤二 - 没有看过 步骤三 的朋友们可以点击下面的链接看看步骤三先
点击查看步骤三 - 没有看过 步骤四 的朋友们可以点击下面的链接看看步骤四先
点击查看步骤四 - 没有看过 步骤五 的朋友们可以点击下面的链接看看步骤四先
点击查看步骤五
这次爬取，我们会使用IP代理，headers设置，lxml解析器，多协程（并发）等技术
相比于之前爬取类似的代码要几个小时这次就只需要用30秒
哈哈哈真是太强了啊！
import requests
import os
import gevent
from gevent import monkey
import random
import re
from lxml import etree
monkey.patch_all(select=False)
from urllib import parse
import time
def setDir():
if 'Noval' not in os.listdir('./'):
os.mkdir('./Noval')
def getNoval(url, id):
headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
'Accept-Language': 'zh-CN,zh;q=0.9',
'Cookie': '__cfduid=d820fcba1e8cf74caa407d320e0af6b5d1518500755; UM_distinctid=1618db2bfbb140-060057ff473277-4323461-e1000-1618db2bfbc1e4; ctrl_time=1; CNZZDATA1272873873=2070014299-1518497311-https%253A%252F%252Fwww.baidu.com%252F%7C1518507528; yjs_id=69163e1182ffa7d00c30fa85105b2432; jieqiVisitTime=jieqiArticlesearchTime%3D1518509603'
}
IPs = [
{'HTTPS': 'https://115.237.16.200:8118'},
{'HTTPS': 'https://42.49.119.10:8118'},
{'HTTPS': 'http://60.174.74.40:8118'}
]
IP = random.choice(IPs)
res = requests.get(url, headers=headers, proxies=IP)
res.encoding = 'GB18030'
html = res.text.replace(' ', ' ') # 替换掉这个字符 换成空格~ 意思是一样的
page = etree.HTML(html)
content = page.xpath('//div[@id="content"]')
ps = page.xpath('//div[@class="bookname"]/h1')
if len(ps) != 0:
s = ps[0].text + '\n'
s = s + content[0].xpath("string(.)")
with open('./Noval/%d.txt' % id, 'w', encoding='gb18030', errors='ignore') as f:
f.write(s)
def getContentFile(url):
headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
'Accept-Language': 'zh-CN,zh;q=0.9',
'Cookie': '__cfduid=d820fcba1e8cf74caa407d320e0af6b5d1518500755; UM_distinctid=1618db2bfbb140-060057ff473277-4323461-e1000-1618db2bfbc1e4; ctrl_time=1; CNZZDATA1272873873=2070014299-1518497311-https%253A%252F%252Fwww.baidu.com%252F%7C1518507528; yjs_id=69163e1182ffa7d00c30fa85105b2432; jieqiVisitTime=jieqiArticlesearchTime%3D1518509603'
}
IPs = [
{'HTTPS': 'https://115.237.16.200:8118'},
{'HTTPS': 'https://42.49.119.10:8118'},
{'HTTPS': 'http://60.174.74.40:8118'}
]
IP = random.choice(IPs)
res = requests.get(url, headers=headers, proxies=IP)
res.encoding = 'GB18030'
page = etree.HTML(res.text)
bookname = page.xpath('//div[@id="info"]/h1')[0].xpath('string(.)')
dl = page.xpath('//div[@id="list"]/dl/dd/a')
splitHTTP = parse.urlsplit(url)
url = splitHTTP.scheme + '://' + splitHTTP.netloc
return list(map(lambda x: url + x.get('href'), dl)), bookname
def BuildGevent(baseurl):
content, bookname = getContentFile(baseurl) # version2
steps = 200
beginIndex, length = steps, len(content)
count = 0
name = "%s.txt" % bookname
while (count - 1) * steps < length:
WaitigList = [gevent.spawn(getNoval, content[i + count * steps], i + count * steps) for i in range(steps) if
i + count * steps < length]
gevent.joinall(WaitigList)
NovalFile = list(filter(lambda x: x[:x.index('.')].isdigit(), os.listdir('./Noval')))
NovalFile.sort(key=lambda x: int(re.match('\d+', x).group()))
String = ''
for dirFile in NovalFile:
with open('./Noval/' + dirFile, 'r', encoding='gb18030', errors='ignore') as f:
String = String + '\n' + f.read()
os.remove('./Noval/%s' % dirFile)
if count == 0:
with open('./Noval/' + name, 'w', encoding='gb18030', errors='ignore') as ff:
ff.write(String)
else:
with open('./Noval/' + name, 'a', encoding='gb18030', errors='ignore') as ff:
ff.write(String)
count += 1
if __name__ == '__main__':
starttime = time.time()
setDir()
url = 'http://www.biquge.com.tw/3_3711/'
BuildGevent(url)
endtime = time.time()
print("Total use time: %.6f" % (endtime - starttime))
