pan1
1 import urllib.request 2 import re 3 import random 4 5 def get_source(key): 6 7 print('请稍等，爬取中....') 8 headers = [{'User-Agent':'Mozilla/5.0 (Windows NT 6.3 WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Maxthon/4.4.8.1000 Chrome/30.0.1599.101 Safari/537.36'},{'User-Agent':"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"},{'User-Agent': 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 10.0; WOW64; Trident/7.0)'}] 9 10 header = random.choice(headers) # 随机选取一个header 11 12 keyword = key.encode('utf-8') 13 keyword = urllib.request.quote(keyword) # 对关键词进行编码 14 15 # 这里是关键，称随机搜索一个资源名，然后对其结果网址进行分析 16 url = "http://www.wangpansou.cn/s.php?wp=0&ty=gn&op=gn&q="+keyword+"&q="+keyword 17 req = urllib.request.Request(url, headers=header) 18 19 html = urllib.request.urlopen(req) 20 21 # 编码类型 22 head_type = html.headers['Content-Type'].split('=')[-1] 23 24 25 status = html.getcode() # 获取状态码，只有访问成功了才继续。 26 if status == 200: 27 html = html.read() 28 html = html.decode(head_type) # 根据网站编码时行解码 29 30 # 正则匹配 31 pattern = re.compile('<a href="(.+)"><div class="cse-search-result_paging_num " tabindex="d{1,3}">d{1,3}</div></a>') 32 content = pattern.findall(html) 33 34 url_list = [] 35 url_head = 'http://www.wangpansou.cn/' 36 for i in content: 37 i = url_head +i # 因为正匹配出来的只有一部分,所以把前面的一部分加上,开成完整的链接 38 if not i in url_list: # 去掉重复的,网页确实有两分,所以去重. 39 url_list.append(i) # 得到所有 有搜索结果的页面网址列表 40 41 count = 1 # 计数用 42 for each_url in url_list: 43 header = random.choice(headers) # 针对每个链接都随机选择一个'头',防止被服务器封掉 44 request1 = urllib.request.Request(each_url, headers=header) 45 html2 = urllib.request.urlopen(request1) 46 47 status = html2.getcode() # 获取状态码 48 if status == 200: 49 html2 = html2.read() 50 html2 = html2.decode(head_type) 51 pattern1 = re.compile('<a class=".+" href="(.+)" rel.+') 52 content1 = pattern1.findall(html2) 53 54 55 pattern2 = re.compile('<div id=".+" class="cse-search-result_content_item_mid">s+(.+)') 56 content2 = pattern2.findall(html2) 57 58 59 for i in range(0,len(content2)): 60 print(str(count) + ':' + content2[i] + ' ' + content1[i]) 61 print() 62 count += 1 63 64 print('共搜索到%d个资源,已经全部爬取完毕！' % count) 65 66 if __name__ == '__main__': 67 get_source(input('请输入要搜索的资源名:'))
"""
说明：
a.本搜索实际是通过通过网盘搜这个网站进行的二次搜索，如果找资源也可以直接到网盘搜进行一页一页的搜索
本脚本唯一的优点是一次性将所有结果全部爬下来，不用一页一页的翻找。
b.代码相当丑，但这也是对学习过程的记录，先实现功能，再考虑代码。
"""
略作优化，同时修正了两个小bug
pan2
1 # coding = 'utf-8' 2 import urllib.request 3 import re 4 import random 5 6 def get_html(url, header): 7 req = urllib.request.Request(url, headers=header) 8 html = urllib.request.urlopen(req) 9 10 head_type = html.headers['Content-Type'].split('=')[-1] 11 status = html.getcode() 12 13 return html, head_type, status # 分别得到html, 编码方式， 访问状态码 14 15 16 headers = [{'User-Agent':'Mozilla/5.0 (Windows NT 6.3 WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Maxthon/4.4.8.1000 Chrome/30.0.1599.101 Safari/537.36'},{'User-Agent':"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"},{'User-Agent': 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 10.0; WOW64; Trident/7.0)'}] 17 18 19 keyword =input('请输入要搜索的资源名:') 20 keyword = urllib.request.quote(keyword.encode('utf-8')) 21 url = "http://www.wangpansou.cn/s.php?wp=0&ty=gn&op=gn&q="+keyword+"&q="+keyword 22 header = random.choice(headers) 23 24 f_html, f_head_type, f_status = get_html(url, header) 25 26 if f_status == 200: 27 f_html = f_html.read() 28 f_html = f_html.decode(f_head_type) 29 30 pattern = re.compile('<a href="(.+)"><div class="cse-search-result_paging_num " tabindex="d{1,3}">d{1,3}</div></a>') 31 content = pattern.findall(f_html) # 得到所有有相关结果的页面链接 32 33 url_list = [] 34 url_head = 'http://www.wangpansou.cn/' 35 for i in content: 36 i = url_head +i # 因为正匹配出来的只有一部分,所以把前面的一部分加上,开成完整的链接 37 if not i in url_list: # 去掉重复的,网页确实有两分,所以去重. 38 url_list.append(i) # 得到所有 有搜索结果的页面网址列表 39 first_url = url_list[0][:-2] + '0' # 加上第一页 40 url_list.insert(0,first_url) 41 42 count = 0 43 for each_url in url_list: 44 header = random.choice(headers) 45 s_html, s_head_type, s_status = get_html(each_url, header) 46 47 if s_status == 200: 48 s_html = s_html.read() 49 s_html = s_html.decode(s_head_type) 50 s_pattern = re.compile('<a class=".+" href="(.+)" rel.+') 51 s_content = s_pattern.findall(s_html) # 分享的链接 52 53 t_pattern = re.compile('<div id=".+" class="cse-search-result_content_item_mid">s+(.+)') 54 t_content = t_pattern.findall(s_html) # 文件信息 55 else: 56 print('Website Error!') 57 58 for i in range(0, len(s_content)): 59 count += 1 60 print(str(count) + ':' + t_content[i] + ' ' + s_content[i]) 61 print() 62 63 64 65 print('共搜索到%d个资源,已经全部爬取完毕！' % count)