百度图片爬虫-python版-如何爬取百度图片?
发布于 6 年前 作者 haoning7788 4193 次浏览 来自 分享

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,这个爬虫也是:搜搜gif(在线制作功能点我) 的爬虫代码,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

[#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')
 
        result = 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

本人建个qq群,欢迎大家一起交流技术, 群号:512245829 喜欢微博的朋友关注:转盘娱乐即可

回到顶部