1 __author__ = 'minmin'
2 #coding:utf-8
3 import re,urllib,sgmllib,os
4
5 #根据当前的url获取html
6 def getHtml(url):
7 page = urllib.urlopen(url)
8 html = page.read()
9 page.close()
10 return html
11
12 #根据html获取想要的文章内容
13 def func(str):
14 result= re.findall(r"<p>([^<>]*)</p>",getHtml(url),re.M)
15 artical =''
16 for j in result:
17 if len(j)<>0:
18 j = j.replace(" ","")
19 j = j.replace("<STRONG>"," ")#去掉<STRONG>,换成" "
20 j = j.replace("</STRONG>"," ")#去掉</STROGN>换成" "
21 artical = artical + j + '\n'
22 return artical
23
24 #html链接的标签是“a”，链接的属性是“href”，也就是要获得html中所有tag=a，attrs=href 值。
25 class URLPaser(sgmllib.SGMLParser):
26 def reset(self):
27 sgmllib.SGMLParser.reset(self)
28 self.urls = []
29
30 def start_a(self,attrs):
31 href = [v for k,v in attrs if k == 'href']
32 if href:
33 self.urls.extend(href)
34
35 IParser = URLPaser()
36 socket = urllib.urlopen("http://mil.news.sina.com.cn/")#打开这个网页
37
38 #fout = file('qq_art_urls.txt','w')#要把这个链接写到这个文件中
39 IParser.feed(socket.read())#分析啦
40
41 reg = 'http://mil.news.sina.com.cn/.*'#这个是用来匹配符合条件的链接，使用正则表达式匹配
42
43 pattern = re.compile(reg)
44
45
46 os.getcwd()#获得当前文件夹路径
47 os.path.sep#当前系统路径分隔符
48
49 #判断文件是否存在
50 if os.path.exists('sina_military')==False:
51 os.makedirs('sina_military')
52
53 i = 0
54 url2 = []
55 for url in IParser.urls:#链接都存在urls里
56
57 if pattern.match(url):
58 if url not in url2:
59 url2.append(url)
60 artical = func(url)
61 print artical
62 if len(artical)<>0:
63 i = i + 1
64 f = open("sina_military/"+ str(i) + '.txt','a+')
65 f.write(artical)
66 f.close()
