百度图片爬虫-python 版-如何爬取百度图片?

上一篇我写了如何爬取百度网盘的爬虫，在这里还是重温一下，把链接附上：

http://www.cnblogs.com/huangxie/p/5473273.html

这一篇我想写写如何爬取百度图片的爬虫，因为要做个 gif 网站。不过现在由于服务器的问题我关站了，其实爬虫整体框架还是差不多的，但就是会涉及到图片的的一些处理，还是花费了我不少时间的，所以我请阅读的本爬虫的孩子还是认真一些，毕竟程序猿都不容易啊。好的，我也不想多说，爬虫的代码我会分享到去转盘网，想下载本爬虫代码的孩子请点我下载，如果没有下载到，请点击这个链接

附代码：

PS:不会 python 的孩子赶快去补补吧，先把基础搞清楚再说

#coding:utf-8 """ Created on 2015-9-17 @author: huangxie """ import time,math,os,re,urllib,urllib2,cookielib from bs4 import BeautifulSoup import time import re import uuid import json from threading import Thread from Queue import Queue import MySQLdb as mdb import sys import threading import utils import imitate_browser from MySQLdb.constants.REFRESH import STATUS reload(sys) sys.setdefaultencoding('utf-8') DB_HOST = '127.0.0.1' DB_USER = 'root' DB_PASS = 'root' proxy = {u'http':u'222.39.64.13:8118'} TOP_URL="http://image.baidu.com/i?tn=resultjsonavatarnew&ie=utf-8&word={word}&pn={pn}&rn={rn}" KEYWORD_URL="https://www.baidu.com/s?ie=utf-8&f=8&tn=baidu&wd={wd}" """ i_headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11', 'Accept':'json;q=0.9,*/*;q=0.8', 'Accept-Charset':'utf-8;q=0.7,*;q=0.3', 'Accept-Encoding':'gzip', 'Connection':'close', 'Referer':None #注意如果依然不能抓取的话，这里可以设置抓取网站的 host } """ i_headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.48'} def GetDateString(): x = time.localtime(time.time()) foldername = str(x.__getattribute__("tm_year"))+"-"+str(x.__getattribute__("tm_mon"))+"-"+str(x.__getattribute__("tm_mday")) return foldername class BaiduImage(threading.Thread): def __init__(self): Thread.__init__(self) self.browser=imitate_browser.BrowserBase() self.chance=0 self.chance1=0 self.request_queue=Queue() self.wait_ana_queue=Queue() #self.key_word_queue.put((("动态图", 0, 24))) self.count=0 self.mutex = threading.RLock() #可重入锁，使单线程可以再次获得已经获得的锁 self.commit_count=0 self.ID=500 self.next_proxy_set = set() self.dbcOnn= mdb.connect(DB_HOST, DB_USER, DB_PASS, 'sosogif', charset='utf8') self.dbconn.autocommit(False) self.dbcurr = self.dbconn.cursor() self.dbcurr.execute('SET NAMES utf8') """ def run(self): while True: self.get_pic() """ def work(self,item): print "start thread",item while True: #MAX_REQUEST 条以上则等待 self.get_pic() self.prepare_request() def format_keyword_url(self,keyword): return KEYWORD_URL.format(wd=keyword).encode('utf-8') def generateSeed(self,url): html = self.browser.openurl(url).read() if html: try: soup = BeautifulSoup(html) trs = soup.find('div', id='rs').find('table').find_all('tr') #获得所有行 for tr in trs: ths=tr.find_all('th') for th in ths: a=th.find_all('a')[0] keyword=a.text.strip() if "动态图" in keyword or "gif" in keyword: print "keyword",keyword self.dbcurr.execute('select id from info where word=%s',(keyword)) y = self.dbcurr.fetchone() if not y: self.dbcurr.execute('INSERT INTO info(word,status,page_num,left_num,how_many) VALUES(%s,0,0,0,0)',(keyword)) self.dbconn.commit() except: pass def prepare_request(self): self.lock() self.dbcurr.execute('select * from info where status=0') rsult = self.dbcurr.fetchone() if result: id,word,status,page_num,left_num,how_many=result self.request_queue.put((id,word,page_num)) if page_num==0 and left_num==0 and how_many==0: url=self.format_keyword_url(word) self.generateSeed(url) html="" try: url=self.format_top_url(word, page_num, 24) html = self.browser.openurl(url).read() except Exception as err: print "err",err #pass if html!="": how_many=self.how_many(html) print "how_many",how_many if how_many==None: how_many=0 t=math.ceil(how_many/24*100) #只要前 1/100 即可 num = int(t) for i in xrange(0,num-1): self.dbcurr.execute('INSERT INTO info(word,status,page_num,left_num,how_many) VALUES(%s,%s,%s,%s,%s)',(word,0,i*24,num-i,how_many)) self.dbcurr.execute('update info SET status=1 WHERE id=%s',(id)) #置为已经访问 self.dbconn.commit() self.unlock() def start_work(self,req_max): for item in xrange(req_max): t = threading.Thread(target=self.work, args=(item,)) t.setDaemon(True) t.start() def lock(self): #加锁 self.mutex.acquire() def unlock(self): #解锁 self.mutex.release() def get_para(self,url,key): values = url.split('?')[-1] for key_value in values.split('&'): value=key_value.split('=') if value[0]==key: return value[1] return None def makeDateFolder( self,par,child): #self.lock() if os.path.isdir( par ): path=par + '//' + GetDateString() newFolderName = path+'//'+child if not os.path.isdir(path): os.mkdir(path) if not os.path.isdir( newFolderName ): os.mkdir( newFolderName ) return newFolderName else: return par #self.unlock() def parse_json(self,data): ipdata = json.loads(data) try: if ipdata['imgs']: for n in ipdata['imgs']: #data 子项 if n['objURL']: try: proxy_support = urllib2.ProxyHandler(proxy) opener = urllib2.build_opener(proxy_support) urllib2.install_opener(opener) #print "proxy",proxy self.lock() self.dbcurr.execute('select ID from pic_info where objURL=%s', (n['objURL'])) y = self.dbcurr.fetchone() #print "y=",y if y: print "database exist" self.unlock() #continue 前解锁 continue else: real_extension=utils.get_extension(n['objURL']) req = urllib2.Request(n['objURL'],headers=i_headers) resp = urllib2.urlopen(req,None,5) dataimg=resp.read() name=str(uuid.uuid1()) filename="" if len(real_extension)>4: real_extension=".gif" real_extension=real_extension.lower() if real_extension==".gif": filename =self.makeDateFolder("E://sosogif", "d"+str(self.count % 60))+"//"+name+"-www.sosogif.com-搜搜 gif 贡献"+real_extension self.count+=1 else: filename =self.makeDateFolder("E://sosogif", "o"+str(self.count % 20))+"//"+name+"-www.sosogif.com-搜搜 gif 贡献"+real_extension self.count+=1 """ name=str(uuid.uuid1()) filename="" if len(real_extension)>4: real_extension=".gif" filename =self.makeDateFolder("E://sosogif", "d"+str(self.count % 60))+"//"+name+"-www.sosogif.com-搜搜 gif 贡献"+real_extension self.count+=1 """ try: if not os.path.exists(filename): file_object = open(filename,'w+b') file_object.write(dataimg) file_object.close() self.anaylis_info(n,filename,real_extension) #入库操作 else: print "file exist" except IOError,e1: print "e1=",e1 pass self.unlock() except IOError,e2: #print "e2=",e2 pass self.chance1+=1 except Exception as parse_error: print "parse_error",parse_error pass def title_dealwith(self,title): #print "title",title a=title.find("<strong>") temp1=title[0:a] b=title.find("</strong>") temp2=title[a+8:b] temp3=title[b+9:len(title)] return (temp1+temp2+temp3).strip() def anaylis_info(self,n,filename,real_extension): print "success." #if self.wait_ana_queue.qsize()!=0: #n,filename,real_extension=self.wait.ana_queue.get() #self.lock() objURL=n['objURL'] #图片地址 fromURLHost=n['fromURLHost'] #来源网站 width=n['width'] #宽度 height=n['height'] #高度 di=n['di'] #用来唯一标识 type=n['type'] #格式 fromPageTitle=n['fromPageTitle'] #来自网站 keyword=self.title_dealwith(fromPageTitle) cs=n['cs'] #未知 os=n['os'] #未知 temp = time.time() x = time.localtime(float(temp)) acTime = time.strftime("%Y-%m-%d %H:%M:%S",x) #爬取时间 self.dbcurr.execute('select ID from pic_info where cs=%s', (cs)) y = self.dbcurr.fetchone() if not y: print 'add pic',filename self.commit_count+=1 self.dbcurr.execute('INSERT INTO pic_info(objURL,fromURLHost,width,height,di,type,keyword,cs,os,acTime,filename,real_extension) VALUES(%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)',(objURL,fromURLHost,width,height,di,type,keyword,cs,os,acTime,filename,real_extension)) if self.commit_count==10: self.dbconn.commit() self.commit_count=0 #self.unlock() def format_top_url(self,word,pn,rn): url = TOP_URL.format(word=word, pn=pn,rn=rn).encode('utf-8') return url def how_many(self,data): try: ipdata = json.loads(data) if ipdata['displayNum']>0: how_many=ipdata['displayNum'] return int(how_many) else: return 0 except Exception as e: pass def get_pic(self): """ word="gif" pn=0 rn=24 if self.key_word_queue.qsize()!=0: word,pn,rn=self.key_word_queue.get() url=self.format_top_url(word,pn,rn) global proxy if url: try: html="" try: req = urllib2.Request(url,headers=i_headers) respOnse= urllib2.urlopen(req, None,5) #print "url",url html = self.browser.openurl(url).read() except Exception as err: print "err",err #pass if html: how_many=self.how_many(html) #how_many=10000 print "how_many",how_many word=self.get_para(url,"word") rn=int(self.get_para(url,"rn")) t=math.ceil(how_many/rn) num = int(t) for item in xrange(0,num-1): """ try: global proxy print "size of queue",self.request_queue.qsize() if self.request_queue.qsize()!=0: id,word,page_num = self.request_queue.get() u=self.format_top_url(word,page_num,24) self.lock() self.dbcurr.execute('update info SET status=1 WHERE id=%s',(id)) self.dbconn.commit() if self.chance >0 or self.chance1>1: #任何一个出问题都给换代理 if self.ID % 100==0: self.dbcurr.execute("select count(*) from proxy") for r in self.dbcurr: count=r[0] if self.ID>count: self.ID=50 self.dbcurr.execute("select * from proxy where ID=%s",(self.ID)) results = self.dbcurr.fetchall() for r in results: protocol=r[1] ip=r[2] port=r[3] pro=(protocol,ip+":"+port) if pro not in self.next_proxy_set: self.next_proxy_set.add(pro) self.chance=0 self.chance1=0 self.ID+=1 self.unlock() proxy_support = urllib2.ProxyHandler(proxy) opener = urllib2.build_opener(proxy_support) urllib2.install_opener(opener) html="" try: req = urllib2.Request(u,headers=i_headers) #print "u=",u respOnse= urllib2.urlopen(req, None,5) html = response.read() if html: #print "html",type(html) self.parse_json(html) except Exception as ex1: #print "error=",ex1 pass self.chance+=1 if self.chance>0 or self.chance1>1: if len(self.next_proxy_set)>0: protocol,socket=self.next_proxy_set.pop() proxy= {protocol:socket} print "change proxy finished<<",proxy,self.ID except Exception as e: print "error1",e pass if __name__ == '__main__': app = BaiduImage() app.start_work(80) #app.generateSeed() while 1: pass 

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