這一篇我想寫寫如何爬取百度圖檔的爬蟲，這個爬蟲也是：搜搜gif（線上制作功能點我） 的爬蟲代碼，其實爬蟲整體架構還是差不多的，但就是會涉及到圖檔的的一些處理，還是花費了我不少時間的，是以我請閱讀的本爬蟲的孩子還是認真一些
上一篇我寫了如何爬取百度網盤的爬蟲，在這裡還是重溫一下，把連結附上：
http://www.cnblogs.com/huangxie/p/5473273.html
這一篇我想寫寫如何爬取百度圖檔的爬蟲，這個爬蟲也是：搜搜gif（線上制作功能點我） 的爬蟲代碼，其實爬蟲整體架構還是差不多的，但就是會涉及到圖檔的的一些處理，還是花費了我不少時間的，是以我請閱讀的本爬蟲的孩子還是認真一些，畢竟程式猿都不容易啊。好的，我也不想多說，爬蟲的代碼我會分享到去轉盤網，想下載下傳本爬蟲代碼的孩子請點我下載下傳，如果沒有下載下傳到，請點選這個連結。
附代碼：
PS:不會python的孩子趕快去補補吧，先把基礎搞清楚再說
#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話，這裡可以設定抓取網站的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((("動态圖", 0, 24)))
self.count=0
self.mutex = threading.RLock() #可重入鎖，使單線程可以再次獲得已經獲得的鎖
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條以上則等待
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') #獲得所有行
for tr in trs:
ths=tr.find_all('th')
for th in ths:
a=th.find_all('a')[0]
keyword=a.text.strip()
if "動态圖" 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) #隻要前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)) #置為已經通路
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): #加鎖
self.mutex.acquire()
def unlock(self): #解鎖
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子項
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 前解鎖
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貢獻"+real_extension
self.count+=1
else:
filename =self.makeDateFolder("E://sosogif", "o"+str(self.count % 20))+"//"+name+"-www.sosogif.com-搜搜gif貢獻"+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貢獻"+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) #入庫操作
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'] #圖檔位址
fromURLHost=n['fromURLHost'] #來源網站
width=n['width'] #寬度
height=n['height'] #高度
di=n['di'] #用來唯一辨別
type=n['type'] #格式
fromPageTitle=n['fromPageTitle'] #來自網站
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) #爬取時間
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: #任何一個出問題都給換代理
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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