“追新番”网站
追新番网站提供最新的日剧和日影下载地址，更新比较快。
个人比较喜欢看日剧，因此想着通过爬取该网站，做一个资源地图
可以查看网站到底有哪些日剧，并且随时可以下载。
资源地图
爬取的资源地图如下：
在linux系统上通过 ls | grep keywords 可以轻松找到想要的资源（windows直接搜索就行啦）
爬取脚本开发
1. 确定爬取策略
进入多个日剧，可以查看到每个剧的网址都是如下形式:
可以看出，每个日剧网页都对应一个编号。
因此我们可以通过遍历编号来爬取。
2. 获取日剧的名字
打开其中一个日剧的网页，查看标题的源代码如下:
可以看到，标题的标签ID为"pdtname", 我们只要获取该标签的文本即可获取日剧名字
通过beautifulSoup的接口，获取该标签内容（去除了名字中多余东西）
1 # try get tv name
2 tag_name = soup.find(id=‘pdtname‘)
3 if None == tag_name:
4 print(‘tv_{:0>4d}: not exist.‘.format(num))
5 return None
6
7 # remove signs not need
8 name = tag_name.get_text().replace(‘ ‘, ‘‘)
9 try:
10 name = name.replace(re.search(‘【.*】‘, name).group(0), ‘‘)
11 name = name.replace(re.search(‘\(.*\)‘, name).group(0), ‘‘)
12 name = name.replace(‘《‘, ‘‘)
13 name = name.replace(‘》‘, ‘‘)
14 name = name.replace(‘/‘, ‘‘)
15 except :
16 pass
3. 获取资源链接
在每个日剧页面中同时也包含了资源链接的地址，查看源代码如下:
可以看到资源链接使用了一个表块，并且表块的ID为"ajax_tbody"
其中每一集都是表的行元素，每一行又包含了几列来显示资源的各个信息
我们通过遍历表的元素来获取每一集的资源链接
# try get tv resources list
tag_resources = soup.find(id=‘ajax_tbody‘)
if None == tag_resources:
print(‘tv_{:0>4d}: has no resources.‘.format(num))
return None
# walk resources
for res in tag_resources.find_all(‘tr‘):
# get link tag
tag_a = res.find(‘a‘)
info = res.find_all(‘td‘)
print(‘resource: ‘, tag_a.get_text())
# get download link
downlink = get_resources_link(session, tag_a.get(‘href‘))
# record resouces
tv.resources.append([tag_a.get_text(), info[2].get_text(), downlink, ‘‘])
delay(1)
4. 获取下载链接
点击其中一个资源，进入下载链接页面，查看源代码如下
可以看到电驴的下载链接标签ID为"emule_url"，因此我们只需要获取该标签的文本就可以了（磁力链接类似）
不过首先我们还需要先获取该下载页面，整体操作代码如下
def get_resources_link(session, url):
‘‘‘ get tv resources download link ‘‘‘
global domain
res_url = domain + url
# open resources page
resp = session.get(res_url, timeout = 10)
resp.raise_for_status()
soup = page_decode(resp.content, resp.encoding)
tag_emule = soup.find(id=‘emule_url‘)
return tag_emule.get_text() if tag_emule != None else ‘‘
5. 将资源下载链接保存到本地
其中，由于爬取所有日剧的下载链接比较耗时，前面做了判断可以只爬取标题，日后根据序号再爬取下载链接
def save_tv(tv):
‘‘‘ save tv infomation on disk ‘‘‘
filename = os.path.join(os.path.abspath(save_dir), ‘{:0>4d}_{}.txt‘.format(tv.num, tv.name))
global only_catalog
if only_catalog == True:
with open(filename, ‘a+‘) as f:
pass
else:
with open(filename, ‘w‘) as f:
for info in tv.resources:
f.write(os.linesep.join(info))
f.write(‘========‘ + os.linesep)
以上，就是整个爬取脚本的开发过程。
欢迎关注我的代码仓库: https://gitee.com/github-18274965/Python-Spider
以后还会开发其余网站的爬取脚本。
附录
整体代码:
1 #!/usr/bin/python3
2 # -*- coding:utf-8 -*-
3
4 import os
5 import sys
6 import re
7 import requests
8 from bs4 import BeautifulSoup
9 from time import sleep
10
11 # website domain
12 domain = ‘http://www.zhuixinfan.com/‘
13
14 # spide infomation save directory
15 save_dir = ‘./tvinfo/‘
16
17 # only tv catalog
18 only_catalog = False
19
20 class TVInfo:
21 ‘‘‘ TV infomation class‘‘‘
22
23 def __init__(self, num, name):
24 self.num = num
25 self.name = name
26 self.resources = []
27
28
29 def delay(seconds):
30 ‘‘‘ sleep for secondes ‘‘‘
31
32 while seconds > 0:
33 sleep(1)
34 seconds = seconds - 1
35
36 def page_decode(content, encoding):
37 ‘‘‘ decode page ‘‘‘
38
39 # lxml may failed, then try html.parser
40 try:
41 soup = BeautifulSoup(content, ‘lxml‘, from_encoding=encoding)
42 except:
43 soup = BeautifulSoup(content, ‘html.parser‘, from_encoding=encoding)
44
45 return soup
46
47 def open_home_page(session):
48 ‘‘‘ open home page first as humain being ‘‘‘
49
50 global domain
51 home_url = domain + ‘main.php‘
52
53 # open home page
54 resp = session.get(home_url, timeout = 10)
55 resp.raise_for_status()
56
57 # do nothing
58
59 def get_resources_link(session, url):
60 ‘‘‘ get tv resources download link ‘‘‘
61
62 global domain
63 res_url = domain + url
64
65 # open resources page
66 resp = session.get(res_url, timeout = 10)
67 resp.raise_for_status()
68
69 soup = page_decode(resp.content, resp.encoding)
70
71 tag_emule = soup.find(id=‘emule_url‘)
72 return tag_emule.get_text() if tag_emule != None else ‘‘
73
74
75 def spider_tv(session, num):
76 ‘‘‘ fetch tv infomaion ‘‘‘
77
78 global domain
79 tv_url = domain + ‘viewtvplay-{}.html‘.format(num)
80
81 # open tv infomation page
82 resp = session.get(tv_url, timeout = 10)
83 resp.raise_for_status()
84
85 soup = page_decode(resp.content, resp.encoding)
86
87 # try get tv name
88 tag_name = soup.find(id=‘pdtname‘)
89 if None == tag_name:
90 print(‘tv_{:0>4d}: not exist.‘.format(num))
91 return None
92
93 # try get tv resources list
94 tag_resources = soup.find(id=‘ajax_tbody‘)
95 if None == tag_resources:
96 print(‘tv_{:0>4d}: has no resources.‘.format(num))
97 return None
98
99 # remove signs not need
100 name = tag_name.get_text().replace(‘ ‘, ‘‘)
101 try:
102 name = name.replace(re.search(‘【.*】‘, name).group(0), ‘‘)
103 name = name.replace(re.search(‘\(.*\)‘, name).group(0), ‘‘)
104 name = name.replace(‘《‘, ‘‘)
105 name = name.replace(‘》‘, ‘‘)
106 name = name.replace(‘/‘, ‘‘)
107 except :
108 pass
109
110 print(‘tv_{:0>4d}: {}‘.format(num, name))
111
112 tv = TVInfo(num, name)
113
114 global only_catalog
115 if only_catalog == True:
116 return tv
117
118 # walk resources
119 for res in tag_resources.find_all(‘tr‘):
120
121 # get link tag
122 tag_a = res.find(‘a‘)
123 info = res.find_all(‘td‘)
124 print(‘resource: ‘, tag_a.get_text())
125
126 # get download link
127 downlink = get_resources_link(session, tag_a.get(‘href‘))
128
129 # record resouces
130 tv.resources.append([tag_a.get_text(), info[2].get_text(), downlink, ‘‘])
131 delay(1)
132
133 return tv
134
135
136 def save_tv(tv):
137 ‘‘‘ save tv infomation on disk ‘‘‘
138
139 filename = os.path.join(os.path.abspath(save_dir), ‘{:0>4d}_{}.txt‘.format(tv.num, tv.name))
140
141 global only_catalog
142 if only_catalog == True:
143 with open(filename, ‘a+‘) as f:
144 pass
145 else:
146 with open(filename, ‘w‘) as f:
147 for info in tv.resources:
148 f.write(os.linesep.join(info))
149 f.write(‘========‘ + os.linesep)
150
151 def main():
152
153 start = 1
154 end = 999
155
156 if len(sys.argv) > 1:
157 start = int(sys.argv[1])
158
159 if len(sys.argv) > 2:
160 end = int(sys.argv[2])
161
162 global only_catalog
163 s = input("Only catalog ?[y/N] ")
164 if s == ‘y‘ or s == ‘Y‘:
165 only_catalog = True
166
167 # headers: firefox_58 on ubuntu
168 headers = {
169 ‘User-Agent‘: ‘Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:58.0)‘
170 + ‘ Gecko/20100101 Firefox/58.0‘,
171 ‘Accept‘: ‘text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8‘,
172 ‘Accept-Language‘: ‘zh-CN,en-US;q=0.7,en;q=0.3‘,
173 ‘Accept-Encoding‘: ‘gzip, deflate‘,
174 }
175
176 # create spider session
177 with requests.Session() as s:
178
179 try:
180 s.headers.update(headers)
181 open_home_page(s)
182 for num in range(start, end+1):
183 delay(3)
184 tv = spider_tv(s, num)
185 if tv != None:
186 save_tv(tv)
187
188 except Exception as err:
189 print(err)
190 exit(-1)
191
192 if __name__ == ‘__main__‘:
193 main()
原文地址：https://www.cnblogs.com/tp1226/p/8419564.html
时间： 2024-10-15 00:39:22