初识python之 APP store排行榜 蜘蛛抓取(二)
#-*- coding: utf-8 -*- import urllib2 import urllib import re import time import MySQLdb import time,datetime #from datetime import date #----------- APP store 排行榜 ----------- class Spider_Model: def __init__(self): self.page = 1 self.pages = [] self.enable = False def startWork(self,url,tabName): nowtime = int(time.time()) content = self.GetCon(url) oneItems = self.Match(content) #匹配一级参数 time.sleep(1) for index,item in enumerate(oneItems): content_two = self.GetCon(item[1]) twoItems = self.Match_two(content_two) oneItems[index].append([twoItems[0],twoItems[1]]) if oneItems[index][6][0] == ‘0‘: fabutime = ‘0‘ else: fabutime=int(time.mktime(time.strptime(oneItems[index][6][0].strip(),‘%Y年%m月%d日‘))) sql = "INSERT INTO "+tabName+"(`rank`,`detailurl`,`logo`,`name`,`type`,`appid`,`appstoretime`,`compatible`,`ctime`) values(%s,%s,%s,%s,%s,%s,%s,%s,%s)"%(‘"‘+oneItems[index][0]+‘"‘,‘"‘+oneItems[index][1]+‘"‘,‘"‘+oneItems[index][2]+‘"‘,‘"‘+oneItems[index][3]+‘"‘,‘"‘+oneItems[index][4]+‘"‘,‘"‘+oneItems[index][5]+‘"‘,fabutime,‘"‘+oneItems[index][6][1]+‘"‘,nowtime) self.contentDb(sql) time.sleep(1) def GetCon(self,url): myUrl = url headers = {‘User-Agent‘: ‘Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11‘,‘Accept‘: ‘text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8‘} //网站禁止爬虫解决方法加上上面的代码 模拟浏览器访问
req = urllib2.Request(myUrl, headers = headers) global myResponse try: myResponse = urllib2.urlopen(req) except urllib2.HTTPError, e: print e.fp.read()
//异常处理必须加 否则就算模拟了浏览器 也会返回 403 原因不知道...... myPage = myResponse.read() #encode的作用是将unicode编码转换成其他编码的字符串 #decode的作用是将其他编码的字符串转换成unicode编码 #unicodePage = myPage.decode(‘utf-8‘).encode(‘gbk‘,‘ignore‘) #unicodePage = myPage.decode(‘utf-8‘,‘ignore‘) return myPage def Match(self,con): # 找出所有class="content"的div标记 #re.S是任意匹配模式,也就是.可以匹配换行符 pattenA = re.compile(r‘<section class="section apps grid">(.*?)</section>‘,re.U|re.S) pattenB = re.compile(r‘<li><strong>(.*?).</strong><a href="(.*?)".*?><img src="(.*?)".*?></a><h3><a.*?>(.*?)</a></h3><h4><a.*?>(.*?)</a></h4><a.*?>.*?</a></li>‘,re.U|re.S) match = re.findall(pattenA,con) myItems = re.findall(pattenB,match[0]) items = [] for item in myItems: items.append([item[0].replace("\n",""),item[1].replace("\n",""),item[2].replace("\n",""),(item[3].replace("\n","")).split(‘-‘)[0],item[4].replace("\n",""),(item[1].split(‘id‘)[1]).split(‘?‘)[0]]) return items def Match_two(self,con): pattenTwoA = re.compile(r‘<li.*?class="release-date"><span.*?>.*?</span>(.*?)</li>‘,re.U|re.S) pattenTwoB = re.compile(r‘<span.*?class="app-requirements">.*?</span>(.*?)</p>‘,re.U|re.S) matchTwoA = self.is_empty(re.findall(pattenTwoA,con)) matchTwoB = self.is_empty(re.findall(pattenTwoB,con)) itemsTwo = [matchTwoA,matchTwoB] return itemsTwo def is_empty(self,param): if len(param): res = param[0] else: res = ‘0‘ return res def contentDb(self,sql): try: conn = MySQLdb.connect(host="主机", user="用户", passwd="密码", db="表名",charset=‘utf8‘) cur = conn.cursor() result = cur.execute(sql) conn.commit() except MySQLdb.Error,e: print "Mysql Error %d: %s" %(e.args[0],e.args[1]) addArr = [["http://www.apple.com/jp/itunes/charts/free-apps/",‘cg_jp_free‘], ["http://www.apple.com/jp/itunes/charts/paid-apps/",‘cg_jp_paid‘]] myModel = Spider_Model() for val in addArr: myModel.startWork(val[0],val[1])
初识Python 代码写的有点烂,自制罪孽深重......
python版本:2.7.5 测试环境:Linux、Windows
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