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scraping_threads.py
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#-*- coding:utf-8 -*-
'''多线程爬取数据插入到Mysql中final_data表
ThreadUrl类读入Queue中的数据，形成表单post请求到网站，将抓取的数据写入out_queue
DatamineThread类读入out_queue中的数据，数据清理，写入数据库
'''
import requests
import cookielib
import json
import random
import csv
import datetime
import Queue
import threading
import pymysql
from bs4 import BeautifulSoup
from time import sleep
# login and save cookies
url='https://www.hoau.net/how/bse/showPriceTime.action'
url_query='https://www.hoau.net/how/bse/queryPriceTime.action'
requests = requests.Session()
requests.cookies = cookielib.LWPCookieJar('cookies')
try:
requests.cookies.load(ignore_discard=True)
except:
pass
headers = {
'User-Agent': "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36",
'Host': "www.hoau.net",
'Pragma': "no-cache",
'Referer': "https://www.hoau.net/how/bse/showPriceTime.action",
'X-Requested-With': "XMLHttpRequest"
}
requests.get(url,headers=headers)
requests.cookies.save()
# POST form_data to site and get the data we want
def get_price(conCity,conCounty,shipperCity,shipperCounty):
form_data={'priceQueryVo.conCity':conCity,'priceQueryVo.conCounty':conCounty,
'priceQueryVo.shipperCity':shipperCity,'priceQueryVo.shipperCounty':shipperCounty}
#print form_data
r=requests.post(url_query,headers=headers,data=form_data)
a=json.loads(r.text)
shipperCity=a['priceQueryVo']['shipperCity']
shipperCounty=a['priceQueryVo']['shipperCounty']
conCity=a['priceQueryVo']['conCity']
conCounty=a['priceQueryVo']['conCounty']
price=a['priceTimeVos']
for x in price:
if x['transportType']=='ONTIME':
startPrice=x['startPrice']
heavyPrice=x['heavyPrice']
lightPrice=x['lightPrice']
deliveryTime=x['deliveryTime']#char
#print conCity,shipperCity,startPrice,heavyPrice,lightPrice
return (conCity,conCounty,shipperCity,shipperCounty,deliveryTime,startPrice,heavyPrice,lightPrice)
queue = Queue.Queue()
out_queue = Queue.Queue()
#generate queue from db : return a list
def gen_queue(num1,num2):
#conn = pymysql.connect(host='127.0.0.1',user='root', passwd='123456', db='mysql', charset='utf8')
#cur = conn.cursor()
#cur.execute("USE scrapy")
cur.execute("select fromcity,fromcountry,tocity,tocountry from cc where id>=%s and id<%s",(num1,num2))
cc_list=cur.fetchall() # tuple()
#cur.close()
#conn.close()
return cc_list
# get queue, deal, put out_queue
class ThreadUrl(threading.Thread):
def __init__(self, queue, out_queue):
threading.Thread.__init__(self)
self.queue = queue
self.out_queue = out_queue
def run(self):
i=0
while True:
i+=1
if(i%50==0):
_id=threading.current_thread().getName()
print "the thread:",_id,"scraping another 50 times!",i
sleep(random.uniform(1,1.5))
try:
cc = self.queue.get()
data=get_price(*cc) #data=(u'\u5317\u4eac\u5e02', u'\u4e1c\u57ce\u533a', u'\u5317\u4eac\u5e02', u'\u4e1c\u57ce\u533a', 15.0, 0.6, 132.0)
self.out_queue.put(data)
except Exception, e:
#print "ThreadUrl get_price() error!"
#print "%s"%(str(e))
pass
self.queue.task_done()
# get out_queue, deal
class DatamineThread(threading.Thread):
def __init__(self, out_queue):
threading.Thread.__init__(self)
self.out_queue = out_queue
def run(self):
i=0
begin=datetime.datetime.now()
conn = pymysql.connect(host='127.0.0.1',user='root', passwd='123456', db='mysql', charset='utf8')
conn.ping(True)
cur = conn.cursor()
cur.execute("USE scrapy")
while True:
i+=1
chunk = self.out_queue.get()
#self.out_queue.task_done()
###get the final data then load into db #####def func():
sqli="insert into final_data(fromcity,fromcountry,tocity,tocountry,deliveryTime,min_price,heavy_good,light_good) values(%s,%s,%s,%s,%s,%s,%s,%s)"
try:
cur.execute(sqli,(chunk[0].encode('utf-8'),chunk[1].encode('utf-8'),chunk[2].encode('utf-8'),chunk[3].encode('utf-8'),chunk[4].encode('utf-8'),chunk[5],chunk[6],chunk[7]))
cur.execute("commit")
except Exception, e:
print "DatamineThread insert error!"
#print "%s"%(str(e))
#print chunk
#check if lost connection to Mysql
if(i%50==0):
_id=threading.current_thread().getName()
print 'mysql threads:',_id,'already insert ',i,' times!'
try:
cur.execute("select 1 from final_data")
a=cur.fetchone()
check=a[0]
if(check==1):
print _id,'db insert threads connected ok!'
except:
print _id,"seems lost connection to MySQL!"
conn = pymysql.connect(host='127.0.0.1',user='root', passwd='123456', db='mysql', charset='utf8')
conn.ping(True)
cur = conn.cursor()
cur.execute("USE scrapy")
self.out_queue.task_done()
def goscrapy():
for i in range(10):
t=ThreadUrl(queue,out_queue)
t.setDaemon(True)
t.start()
for i in range(10):
dt = DatamineThread(out_queue)
dt.setDaemon(True)
dt.start()
cc_list=gen_queue(37450,1000000)#12054784=6054784+6000000 #1w
for cc in cc_list:
queue.put(cc)
print "queue is ready!"
#wait until processing finish
queue.join()
out_queue.join()
## main
def main():
begin=datetime.datetime.now()
conn = pymysql.connect(host='127.0.0.1',user='root', passwd='123456', db='mysql', charset='utf8')
#conn.ping(True)
cur = conn.cursor()
cur.execute("USE scrapy")
goscrapy()
end=datetime.datetime.now()
print 'Total times used:',(end-begin)
cur.close()
conn.close()
if __name__ == "__main__":
main()