爬虫爬中科院专利

http://www.caship.ac.cn/

# -*- coding: utf-8 -*-

import urllib2import urllibimport reimport threadimport time,stringimport sys

#----------- 加载处理糗事百科 -----------class Spider_Model:

    def __init__(self,content):        self.content=content        self.count=0  #number of pdf downloaded        self.page = 1 #the searching page are visiting        self.pagenumber=0# numeber of the searching page        self.pages = []        self.enable = False

    def GetPage(self,page):        myUrl = "http://www.caship.ac.cn/search/search/?guobie=%E4%B8%AD%E5%9B%BD%E4%B8%93%E5%88%A9&w=query&wd="+self.content+"&s1=%E6%90%9C+%E7%B4%A2&listtype=&page="+str(page)       # print myUrl        user_agent = ‘Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)‘        headers = { ‘User-Agent‘ : user_agent }        req = urllib2.Request(myUrl, headers = headers)        myResponse = urllib2.urlopen(req)        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")

        #re.S是任意匹配模式，也就是.可以匹配换行符       # myItems = re.findall(‘(/Home/DownloadChoice/\d+)‘,unicodePage,re.S)        myItems = re.findall(‘&id=(\d+).*? <span style="font-size:12px;">(.*?)</span>‘,unicodePage,re.S)        #myItems = re.findall(‘<div.*?class="content">(.*?)</div>‘,unicodePage,re.S)        return myItems

    def LoadPage(self):        # 如果用户未输入quit则一直运行        while self.enable:            # 如果pages数组中的内容小于2个            if len(self.pages) < 2:                   # time.sleep(5)                    myPage = self.GetPage(self.page)                    self.page += 1                    self.pages.append(myPage)                    if self.page>self.pagenumber:                        return            else:                time.sleep(1)

    def ShowPage(self,nowPage,page):        for items in nowPage:           if items[1][6] == ‘1‘:            self.SavePage(items[0])            print u‘第%d页:发明专利‘ % page , items[1]           else:            print u‘第%d页:其他专利‘ % page , items[1]

    def SavePage(self,nowPage):       list=self.Getdownload(nowPage)       for item in list:        print item        reObj1 = re.compile(‘/(CN(\.|\w)*pdf)‘)        result=reObj1.findall(item)        print "retult="        print result        sName = result[0][0]        print sName

        if sName[6]!=‘1‘:            print "unvaliable"            return        url="http://www.caship.ac.cn/search/fulltext"+item        try:            req=urllib2.Request(url)            myResponse = urllib2.urlopen(req)            print url            if int(myResponse.info().getheader(‘Content-Length‘))< 10240:                print myResponse.info().getheader(‘Content-Length‘)+"  too small"                return            urllib.urlretrieve(url, sName)            self.count+=1        except urllib2.URLError, e:                 print e.reason

    def Getdownload(self,list):        myUrl = ‘http://www.caship.ac.cn/search/detail/?guobie=%E4%B8%AD%E5%9B%BD%E4%B8%93%E5%88%A9&id=‘+str(list)        user_agent = ‘Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)‘        headers = { ‘User-Agent‘ : user_agent }        req = urllib2.Request(myUrl, headers = headers)        try: myResponse = urllib2.urlopen(req)        except urllib2.URLError, e:          print e.reason        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")

        # 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       # myItems = re.findall(‘(/Home/DownloadChoice/\d+)‘,unicodePage,re.S)        myItems = re.findall(‘fulltext(.*\.pdf)‘,unicodePage,re.S)        #print myItems        #myItems = re.findall(‘<div.*?class="content">(.*?)</div>‘,unicodePage,re.S)        return myItems

    def Getpagenumber(self):        myUrl = "http://www.caship.ac.cn/search/search/?guobie=%E4%B8%AD%E5%9B%BD%E4%B8%93%E5%88%A9&w=query&wd="+self.content+"&s1=%E6%90%9C+%E7%B4%A2&listtype=&page=1"        user_agent = ‘Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)‘        headers = { ‘User-Agent‘ : user_agent }        req = urllib2.Request(myUrl, headers = headers)        myResponse = urllib2.urlopen(req)        myPage = myResponse.read()        unicodePage = myPage.decode("utf-8")        myItems = re.findall(‘(\d+)</a>&nbsp;\s+</li>‘,unicodePage,re.S)        return myItems[0]

    def Start(self):        self.enable = True        self.pagenumber=self.Getpagenumber()        page = self.page        print u‘正在加载中请稍候......‘

        thread.start_new_thread(self.LoadPage,())

        while self.enable:            # 如果self的page数组中存有元素            if self.pages:                nowPage = self.pages[0]                del self.pages[0]                self.ShowPage(nowPage,page)                page += 1            else:                if self.page>self.pagenumber:                    return

def getResourceLength(url):       req=urllib2.Request(url)       response = urllib2.urlopen(req)       print  ‘size‘+response.info().getheader(‘Content-Length‘)       return

print u‘请按下回车浏览今日的糗百内容：‘raw_input(‘ ‘)while(1): content=urllib.quote(raw_input("input what to search")) myModel = Spider_Model(content) print myModel.Getpagenumber() myModel.Start()sys.exit(0)

待整理