思路: 先单线程爬虫,测试可以成功爬取之后再优化为多线程,最后存入数据库
以爬取郑州市租房信息为例
注意: 本实战项目仅以学习为目的,为避免给网站造成太大压力,请将代码中的num修改成较小的数字,并将线程改小
一、单线程爬虫
# 用session取代requests # 解析库使用bs4 # 并发库使用concurrent import requests # from lxml import etree ? ?# 使用xpath解析 from bs4 import BeautifulSoup from urllib import parse import re import time ? headers = { ? ? 'referer': 'https://zz.zu.fang测试数据/', ? ? 'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36', ? ? 'cookie': 'global_cookie=ffzvt3kztwck05jm6twso2wjw18kl67hqft; city=zz; integratecover=1; __utma=147393320.427795962.1613371106.1613371106.1613371106.1; __utmc=147393320; __utmz=147393320.1613371106.1.1.utmcsr=zz.fang测试数据|utmccn=(referral)|utmcmd=referral|utmcct=/; __utmt_t0=1; __utmt_t1=1; __utmt_t2=1; ASP.NET_SessionId=aamzdnhzct4i5mx3ak4cyoyp; Rent_StatLog=23d82b94-13d6-4601-9019-ce0225c092f6; Captcha=61584F355169576F3355317957376E4F6F7552365351342B7574693561766E63785A70522F56557370586E3376585853346651565256574F37694B7074576B2B34536C5747715856516A4D3D; g_sourcepage=zf_fy%5Elb_pc; unique_cookie=U_ffzvt3kztwck05jm6twso2wjw18kl67hqft*6; __utmb=147393320.12.10.1613371106' } data={ ? ? 'agentbid':'' } ? session = requests.session() session.headers = headers ? # 获取页面 def getHtml(url): ? ? try: ? ? ? ? re = session.get(url) ? ? ? ? re.encoding = re.apparent_encoding ? ? ? ? return re.text ? ? except: ? ? ? ? print(re.status_code) ? # 获取页面总数量 def getNum(text): ? ? soup = BeautifulSoup(text, 'lxml') ? ? txt = soup.select('.fanye .txt')[0].text ? ? # 取出“共**页”中间的数字 ? ? num = re.search(r'\d+', txt).group(0) ? ? return num ? # 获取详细链接 def getLink(tex): ? ? soup=BeautifulSoup(text,'lxml') ? ? links=soup.select('.title a') ? ? for link in links: ? ? ? ? href=parse.urljoin('https://zz.zu.fang测试数据/',link['href']) ? ? ? ? hrefs.append(href) ? # 解析页面 def parsePage(url): ? ? res=session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding=res.apparent_encoding ? ? ? ? soup=BeautifulSoup(res.text,'lxml') ? ? ? ? try: ? ? ? ? ? ? title=soup.select('div .title')[0].text.strip().replace(' ','') ? ? ? ? ? ? price=soup.select('div .trl-item')[0].text.strip() ? ? ? ? ? ? block=soup.select('.rcont #agantzfxq_C02_08')[0].text.strip() ? ? ? ? ? ? building=soup.select('.rcont #agantzfxq_C02_07')[0].text.strip() ? ? ? ? ? ? try: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[2].text.strip() ? ? ? ? ? ? except: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[1].text.strip() ? ? ? ? ? ? detail1=soup.select('.clearfix')[4].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail2=soup.select('.clearfix')[5].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail=detail1+detail2 ? ? ? ? ? ? name=soup.select('.zf_jjname')[0].text.strip() ? ? ? ? ? ? buserid=re.search('buserid: \'(\d+)\'',res.text).group(1) ? ? ? ? ? ? phone=getPhone(buserid) ? ? ? ? ? ? print(title,price,block,building,address,detail,name,phone) ? ? ? ? ? ? house = (title, price, block, building, address, detail, name, phone) ? ? ? ? ? ? info.append(house) ? ? ? ? except: ? ? ? ? ? ? pass ? ? else: ? ? ? ? print(re.status_code,re.text) ? # 获取代理人号码 def getPhone(buserid): ? ? url='https://zz.zu.fang测试数据/RentDetails/Ajax/GetAgentVirtualMobile.aspx' ? ? data['agentbid']=buserid ? ? res=session.post(url,data=data) ? ? if res.status_code==200: ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? ? ? ? return ? if __name__ == '__main__': ? ? start_time=time.time() ? ? hrefs=[] ? ? info=[] ? ? init_url = 'https://zz.zu.fang测试数据/house/' ? ? num=getNum(getHtml(init_url)) ? ? for i in range(0,num): ? ? ? ? url = f'https://zz.zu.fang测试数据/house/i3{i+1}/' ? ? ? ? text=getHtml(url) ? ? ? ? getLink(text) ? ? print(hrefs) ? ? for href in hrefs: ? ? ? ? parsePage(href) ? ? ? print("共获取%d条数据"%len(info)) ? ? print("共耗时{}".format(time.time()-start_time)) ? ? session.close()
二、优化为多线程爬虫
# 用session取代requests # 解析库使用bs4 # 并发库使用concurrent import requests # from lxml import etree ? ?# 使用xpath解析 from bs4 import BeautifulSoup from concurrent.futures import ThreadPoolExecutor from urllib import parse import re import time ? headers = { ? ? 'referer': 'https://zz.zu.fang测试数据/', ? ? 'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36', ? ? 'cookie': 'global_cookie=ffzvt3kztwck05jm6twso2wjw18kl67hqft; integratecover=1; city=zz; keyWord_recenthousezz=%5b%7b%22name%22%3a%22%e6%96%b0%e5%af%86%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a014868%2f%22%2c%22sort%22%3a1%7d%2c%7b%22name%22%3a%22%e4%ba%8c%e4%b8%83%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a014864%2f%22%2c%22sort%22%3a1%7d%2c%7b%22name%22%3a%22%e9%83%91%e4%b8%9c%e6%96%b0%e5%8c%ba%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a0842%2f%22%2c%22sort%22%3a1%7d%5d; __utma=147393320.427795962.1613371106.1613558547.1613575774.5; __utmc=147393320; __utmz=147393320.1613575774.5.4.utmcsr=zz.fang测试数据|utmccn=(referral)|utmcmd=referral|utmcct=/; ASP.NET_SessionId=vhrhxr1tdatcc1xyoxwybuwv; g_sourcepage=zf_fy%5Elb_pc; Captcha=4937566532507336644D6557347143746B5A6A6B4A7A48445A422F2F6A51746C67516F31357446573052634562725162316152533247514250736F72775566574A2B33514357304B6976343D; __utmt_t0=1; __utmt_t1=1; __utmt_t2=1; __utmb=147393320.9.10.1613575774; unique_cookie=U_0l0d1ilf1t0ci2rozai9qi24k1pkl9lcmrs*4' } data={ ? ? 'agentbid':'' } ? session = requests.session() session.headers = headers ? # 获取页面 def getHtml(url): ? ? res = session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding = res.apparent_encoding ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? # 获取页面总数量 def getNum(text): ? ? soup = BeautifulSoup(text, 'lxml') ? ? txt = soup.select('.fanye .txt')[0].text ? ? # 取出“共**页”中间的数字 ? ? num = re.search(r'\d+', txt).group(0) ? ? return num ? # 获取详细链接 def getLink(url): ? ? text=getHtml(url) ? ? soup=BeautifulSoup(text,'lxml') ? ? links=soup.select('.title a') ? ? for link in links: ? ? ? ? href=parse.urljoin('https://zz.zu.fang测试数据/',link['href']) ? ? ? ? hrefs.append(href) ? # 解析页面 def parsePage(url): ? ? res=session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding=res.apparent_encoding ? ? ? ? soup=BeautifulSoup(res.text,'lxml') ? ? ? ? try: ? ? ? ? ? ? title=soup.select('div .title')[0].text.strip().replace(' ','') ? ? ? ? ? ? price=soup.select('div .trl-item')[0].text.strip() ? ? ? ? ? ? block=soup.select('.rcont #agantzfxq_C02_08')[0].text.strip() ? ? ? ? ? ? building=soup.select('.rcont #agantzfxq_C02_07')[0].text.strip() ? ? ? ? ? ? try: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[2].text.strip() ? ? ? ? ? ? except: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[1].text.strip() ? ? ? ? ? ? detail1=soup.select('.clearfix')[4].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail2=soup.select('.clearfix')[5].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail=detail1+detail2 ? ? ? ? ? ? name=soup.select('.zf_jjname')[0].text.strip() ? ? ? ? ? ? buserid=re.search('buserid: \'(\d+)\'',res.text).group(1) ? ? ? ? ? ? phone=getPhone(buserid) ? ? ? ? ? ? print(title,price,block,building,address,detail,name,phone) ? ? ? ? ? ? house = (title, price, block, building, address, detail, name, phone) ? ? ? ? ? ? info.append(house) ? ? ? ? except: ? ? ? ? ? ? pass ? ? else: ? ? ? ? print(re.status_code,re.text) ? # 获取代理人号码 def getPhone(buserid): ? ? url='https://zz.zu.fang测试数据/RentDetails/Ajax/GetAgentVirtualMobile.aspx' ? ? data['agentbid']=buserid ? ? res=session.post(url,data=data) ? ? if res.status_code==200: ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? ? ? ? return ? if __name__ == '__main__': ? ? start_time=time.time() ? ? hrefs=[] ? ? info=[] ? ? init_url = 'https://zz.zu.fang测试数据/house/' ? ? num=getNum(getHtml(init_url)) ? ? with ThreadPoolExecutor(max_workers=5) as t: ? ? ? ? for i in range(0,num): ? ? ? ? ? ? url = f'https://zz.zu.fang测试数据/house/i3{i+1}/' ? ? ? ? ? ? t.submit(getLink,url) ? ? print("共获取%d个链接"%len(hrefs)) ? ? print(hrefs) ? ? with ThreadPoolExecutor(max_workers=30) as t: ? ? ? ? for href in hrefs: ? ? ? ? ? ? t.submit(parsePage,href) ? ? print("共获取%d条数据"%len(info)) ? ? print("耗时{}".format(time.time()-start_time)) ? ? session.close()
三、使用asyncio进一步优化
# 用session取代requests # 解析库使用bs4 # 并发库使用concurrent import requests # from lxml import etree ? ?# 使用xpath解析 from bs4 import BeautifulSoup from concurrent.futures import ThreadPoolExecutor from urllib import parse import re import time import asyncio ? headers = { ? ? 'referer': 'https://zz.zu.fang测试数据/', ? ? 'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36', ? ? 'cookie': 'global_cookie=ffzvt3kztwck05jm6twso2wjw18kl67hqft; integratecover=1; city=zz; keyWord_recenthousezz=%5b%7b%22name%22%3a%22%e6%96%b0%e5%af%86%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a014868%2f%22%2c%22sort%22%3a1%7d%2c%7b%22name%22%3a%22%e4%ba%8c%e4%b8%83%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a014864%2f%22%2c%22sort%22%3a1%7d%2c%7b%22name%22%3a%22%e9%83%91%e4%b8%9c%e6%96%b0%e5%8c%ba%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a0842%2f%22%2c%22sort%22%3a1%7d%5d; __utma=147393320.427795962.1613371106.1613558547.1613575774.5; __utmc=147393320; __utmz=147393320.1613575774.5.4.utmcsr=zz.fang测试数据|utmccn=(referral)|utmcmd=referral|utmcct=/; ASP.NET_SessionId=vhrhxr1tdatcc1xyoxwybuwv; g_sourcepage=zf_fy%5Elb_pc; Captcha=4937566532507336644D6557347143746B5A6A6B4A7A48445A422F2F6A51746C67516F31357446573052634562725162316152533247514250736F72775566574A2B33514357304B6976343D; __utmt_t0=1; __utmt_t1=1; __utmt_t2=1; __utmb=147393320.9.10.1613575774; unique_cookie=U_0l0d1ilf1t0ci2rozai9qi24k1pkl9lcmrs*4' } data={ ? ? 'agentbid':'' } ? session = requests.session() session.headers = headers ? # 获取页面 def getHtml(url): ? ? res = session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding = res.apparent_encoding ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? # 获取页面总数量 def getNum(text): ? ? soup = BeautifulSoup(text, 'lxml') ? ? txt = soup.select('.fanye .txt')[0].text ? ? # 取出“共**页”中间的数字 ? ? num = re.search(r'\d+', txt).group(0) ? ? return num ? # 获取详细链接 def getLink(url): ? ? text=getHtml(url) ? ? soup=BeautifulSoup(text,'lxml') ? ? links=soup.select('.title a') ? ? for link in links: ? ? ? ? href=parse.urljoin('https://zz.zu.fang测试数据/',link['href']) ? ? ? ? hrefs.append(href) ? # 解析页面 def parsePage(url): ? ? res=session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding=res.apparent_encoding ? ? ? ? soup=BeautifulSoup(res.text,'lxml') ? ? ? ? try: ? ? ? ? ? ? title=soup.select('div .title')[0].text.strip().replace(' ','') ? ? ? ? ? ? price=soup.select('div .trl-item')[0].text.strip() ? ? ? ? ? ? block=soup.select('.rcont #agantzfxq_C02_08')[0].text.strip() ? ? ? ? ? ? building=soup.select('.rcont #agantzfxq_C02_07')[0].text.strip() ? ? ? ? ? ? try: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[2].text.strip() ? ? ? ? ? ? except: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[1].text.strip() ? ? ? ? ? ? detail1=soup.select('.clearfix')[4].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail2=soup.select('.clearfix')[5].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail=detail1+detail2 ? ? ? ? ? ? name=soup.select('.zf_jjname')[0].text.strip() ? ? ? ? ? ? buserid=re.search('buserid: \'(\d+)\'',res.text).group(1) ? ? ? ? ? ? phone=getPhone(buserid) ? ? ? ? ? ? print(title,price,block,building,address,detail,name,phone) ? ? ? ? ? ? house = (title, price, block, building, address, detail, name, phone) ? ? ? ? ? ? info.append(house) ? ? ? ? except: ? ? ? ? ? ? pass ? ? else: ? ? ? ? print(re.status_code,re.text) ? # 获取代理人号码 def getPhone(buserid): ? ? url='https://zz.zu.fang测试数据/RentDetails/Ajax/GetAgentVirtualMobile.aspx' ? ? data['agentbid']=buserid ? ? res=session.post(url,data=data) ? ? if res.status_code==200: ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? ? ? ? return ? # 获取详细链接的线程池 async def Pool1(num): ? ? loop=asyncio.get_event_loop() ? ? task=[] ? ? with ThreadPoolExecutor(max_workers=5) as t: ? ? ? ? for i in range(0,num): ? ? ? ? ? ? url = f'https://zz.zu.fang测试数据/house/i3{i+1}/' ? ? ? ? ? ? task.append(loop.run_in_executor(t,getLink,url)) ? # 解析页面的线程池 async def Pool2(hrefs): ? ? loop=asyncio.get_event_loop() ? ? task=[] ? ? with ThreadPoolExecutor(max_workers=30) as t: ? ? ? ? for href in hrefs: ? ? ? ? ? ? task.append(loop.run_in_executor(t,parsePage,href)) ? if __name__ == '__main__': ? ? start_time=time.time() ? ? hrefs=[] ? ? info=[] ? ? task=[] ? ? init_url = 'https://zz.zu.fang测试数据/house/' ? ? num=getNum(getHtml(init_url)) ? ? loop = asyncio.get_event_loop() ? ? loop.run_until_complete(Pool1(num)) ? ? print("共获取%d个链接"%len(hrefs)) ? ? print(hrefs) ? ? loop.run_until_complete(Pool2(hrefs)) ? ? loop.close() ? ? print("共获取%d条数据"%len(info)) ? ? print("耗时{}".format(time.time()-start_time)) ? ? session.close()
四、存入Mysql数据库
(一)建表
from sqlalchemy import create_engine from sqlalchemy import String, Integer, Column, Text from sqlalchemy.orm import sessionmaker from sqlalchemy.orm import scoped_session ?# 多线程爬虫时避免出现线程安全问题 from sqlalchemy.ext.declarative import declarative_base ? BASE = declarative_base() ?# 实例化 engine = create_engine( ? ? "mysql+pymysql://root:root@127.0.0.1:3306/pytest?charset=utf8", ? ? max_overflow=300, ?# 超出连接池大小最多可以创建的连接 ? ? pool_size=100, ?# 连接池大小 ? ? echo=False, ?# 不显示调试信息 ) ? ? class House(BASE): ? ? __tablename__ = 'house' ? ? id = Column(Integer, primary_key=True, autoincrement=True) ? ? title=Column(String(200)) ? ? price=Column(String(200)) ? ? block=Column(String(200)) ? ? building=Column(String(200)) ? ? address=Column(String(200)) ? ? detail=Column(Text()) ? ? name=Column(String(20)) ? ? phone=Column(String(20)) ? ? BASE.metadata.create_all(engine) Session = sessionmaker(engine) sess = scoped_session(Session)
(二)将数据存入数据库中
# 用session取代requests # 解析库使用bs4 # 并发库使用concurrent import requests from bs4 import BeautifulSoup from concurrent.futures import ThreadPoolExecutor from urllib import parse from mysqldb import sess, House import re import time import asyncio ? headers = { ? ? 'referer': 'https://zz.zu.fang测试数据/', ? ? 'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36', ? ? 'cookie': 'global_cookie=ffzvt3kztwck05jm6twso2wjw18kl67hqft; integratecover=1; city=zz; __utmc=147393320; ASP.NET_SessionId=vhrhxr1tdatcc1xyoxwybuwv; __utma=147393320.427795962.1613371106.1613575774.1613580597.6; __utmz=147393320.1613580597.6.5.utmcsr=zz.fang测试数据|utmccn=(referral)|utmcmd=referral|utmcct=/; __utmt_t0=1; __utmt_t1=1; __utmt_t2=1; Rent_StatLog=c158b2a7-4622-45a9-9e69-dcf6f42cf577; keyWord_recenthousezz=%5b%7b%22name%22%3a%22%e4%ba%8c%e4%b8%83%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a014864%2f%22%2c%22sort%22%3a1%7d%2c%7b%22name%22%3a%22%e9%83%91%e4%b8%9c%e6%96%b0%e5%8c%ba%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a0842%2f%22%2c%22sort%22%3a1%7d%2c%7b%22name%22%3a%22%e7%bb%8f%e5%bc%80%22%2c%22detailName%22%3a%22%22%2c%22url%22%3a%22%2fhouse-a014871%2f%22%2c%22sort%22%3a1%7d%5d; g_sourcepage=zf_fy%5Elb_pc; Captcha=6B65716A41454739794D666864397178613772676C75447A4E746C657144775A347A6D42554F446532357649643062344F6976756E563450554E59594B7833712B413579506C4B684958343D; unique_cookie=U_0l0d1ilf1t0ci2rozai9qi24k1pkl9lcmrs*14; __utmb=147393320.21.10.1613580597' } data={ ? ? 'agentbid':'' } ? session = requests.session() session.headers = headers ? # 获取页面 def getHtml(url): ? ? res = session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding = res.apparent_encoding ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? # 获取页面总数量 def getNum(text): ? ? soup = BeautifulSoup(text, 'lxml') ? ? txt = soup.select('.fanye .txt')[0].text ? ? # 取出“共**页”中间的数字 ? ? num = re.search(r'\d+', txt).group(0) ? ? return num ? # 获取详细链接 def getLink(url): ? ? text=getHtml(url) ? ? soup=BeautifulSoup(text,'lxml') ? ? links=soup.select('.title a') ? ? for link in links: ? ? ? ? href=parse.urljoin('https://zz.zu.fang测试数据/',link['href']) ? ? ? ? hrefs.append(href) ? # 解析页面 def parsePage(url): ? ? res=session.get(url) ? ? if res.status_code==200: ? ? ? ? res.encoding=res.apparent_encoding ? ? ? ? soup=BeautifulSoup(res.text,'lxml') ? ? ? ? try: ? ? ? ? ? ? title=soup.select('div .title')[0].text.strip().replace(' ','') ? ? ? ? ? ? price=soup.select('div .trl-item')[0].text.strip() ? ? ? ? ? ? block=soup.select('.rcont #agantzfxq_C02_08')[0].text.strip() ? ? ? ? ? ? building=soup.select('.rcont #agantzfxq_C02_07')[0].text.strip() ? ? ? ? ? ? try: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[2].text.strip() ? ? ? ? ? ? except: ? ? ? ? ? ? ? ? address=soup.select('.trl-item2 .rcont')[1].text.strip() ? ? ? ? ? ? detail1=soup.select('.clearfix')[4].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail2=soup.select('.clearfix')[5].text.strip().replace('\n\n\n',',').replace('\n','') ? ? ? ? ? ? detail=detail1+detail2 ? ? ? ? ? ? name=soup.select('.zf_jjname')[0].text.strip() ? ? ? ? ? ? buserid=re.search('buserid: \'(\d+)\'',res.text).group(1) ? ? ? ? ? ? phone=getPhone(buserid) ? ? ? ? ? ? print(title,price,block,building,address,detail,name,phone) ? ? ? ? ? ? house = (title, price, block, building, address, detail, name, phone) ? ? ? ? ? ? info.append(house) ? ? ? ? ? ? try: ? ? ? ? ? ? ? ? house_data=House( ? ? ? ? ? ? ? ? ? ? title=title, ? ? ? ? ? ? ? ? ? ? price=price, ? ? ? ? ? ? ? ? ? ? block=block, ? ? ? ? ? ? ? ? ? ? building=building, ? ? ? ? ? ? ? ? ? ? address=address, ? ? ? ? ? ? ? ? ? ? detail=detail, ? ? ? ? ? ? ? ? ? ? name=name, ? ? ? ? ? ? ? ? ? ? phone=phone ? ? ? ? ? ? ? ? ) ? ? ? ? ? ? ? ? sess.add(house_data) ? ? ? ? ? ? ? ? sess测试数据mit() ? ? ? ? ? ? except Exception as e: ? ? ? ? ? ? ? ? print(e) ? ?# 打印错误信息 ? ? ? ? ? ? ? ? sess.rollback() ?# 回滚 ? ? ? ? except: ? ? ? ? ? ? pass ? ? else: ? ? ? ? print(re.status_code,re.text) ? # 获取代理人号码 def getPhone(buserid): ? ? url='https://zz.zu.fang测试数据/RentDetails/Ajax/GetAgentVirtualMobile.aspx' ? ? data['agentbid']=buserid ? ? res=session.post(url,data=data) ? ? if res.status_code==200: ? ? ? ? return res.text ? ? else: ? ? ? ? print(res.status_code) ? ? ? ? return ? # 获取详细链接的线程池 async def Pool1(num): ? ? loop=asyncio.get_event_loop() ? ? task=[] ? ? with ThreadPoolExecutor(max_workers=5) as t: ? ? ? ? for i in range(0,num): ? ? ? ? ? ? url = f'https://zz.zu.fang测试数据/house/i3{i+1}/' ? ? ? ? ? ? task.append(loop.run_in_executor(t,getLink,url)) ? # 解析页面的线程池 async def Pool2(hrefs): ? ? loop=asyncio.get_event_loop() ? ? task=[] ? ? with ThreadPoolExecutor(max_workers=30) as t: ? ? ? ? for href in hrefs: ? ? ? ? ? ? task.append(loop.run_in_executor(t,parsePage,href)) ? if __name__ == '__main__': ? ? start_time=time.time() ? ? hrefs=[] ? ? info=[] ? ? task=[] ? ? init_url = 'https://zz.zu.fang测试数据/house/' ? ? num=getNum(getHtml(init_url)) ? ? loop = asyncio.get_event_loop() ? ? loop.run_until_complete(Pool1(num)) ? ? print("共获取%d个链接"%len(hrefs)) ? ? print(hrefs) ? ? loop.run_until_complete(Pool2(hrefs)) ? ? loop.close() ? ? print("共获取%d条数据"%len(info)) ? ? print("耗时{}".format(time.time()-start_time)) ? ? session.close()
五、最终效果图 (已打码)
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