成果
b2c_or_c2c(sell=0,pages=2)
总执行代码，ID默认为个人0（商户1），根据ID分别采集列表，默认2页；产生具体的链接地址导入get_ipads_links(link)
注意点的地方：
无
get_ipads_links(link)
根据b2c_or_c2c获得批量的地址；产生对应的具体地址，将地址和ID(商户，个人)导入ipad_detail(ipad_detail_url,id)（ID从地址中获取）
注意的地方：
1.链接有可能会跳转
2.商户和个人的列表样式不一样
ipad_detail(ipad_detail_url,id)
根据get_ipads_links(link)获得批量的具体地址和ID(商户，个人)导入，采集数据，分别存储
注意的地方：
1.链接有可能会跳转,浏览数首先要的是最终着陆地址
2.分别存储
3.浏览数是动态加载，是如何发现的？为什么会知道是哪个地方调用？为什么知道用cookie才有效？？
get_detail_views（url）
ipad_detail(ipad_detail_url,id)内部使用的方法（仅仅在商户时生效）；
注意的地方：
1.为什么会知道是哪个地方调用？为什么知道用cookie才有效？？
代码
#!/usr/bin/env python
#-*- coding: utf-8 -*-
path='./58_results_'
from bs4 import BeautifulSoup
import requests #有s
import time
time1 = time.strftime("%H:%M:%S").replace(':','-')
def get_ipads_links(url):
ipads_list_url = url # 平板地址
ipads_list_code = requests.get(ipads_list_url).status_code
time.sleep(1)
if ipads_list_code ==200:
print(url+u' 成功链接')
id = (url.split('/')[-3])
print(id)
ipads_list_date = requests.get(ipads_list_url).text
soup = BeautifulSoup(ipads_list_date,'lxml')
if id == '0':#这里是str
ipads_detail_links = soup.select('table.tbimg tbody tr.zzinfo td.t a.t')
elif id=='1':
ipads_detail_links = soup.select('td.t > a.t')
i=0
link = []
for ipads_detail_link in ipads_detail_links:
i=i+1
ipads_detail_link = ipads_detail_link.get('href')
link.append(ipads_detail_link)
print(str(i) +' '+ str(ipads_detail_link))
ipad_detail(ipad_detail_url=str(ipads_detail_link),id=id)
def ipad_detail(ipad_detail_url= 'http://zhuanzhuan.58.com/detail/783587851712380932z.shtml',id='0'):
from urllib import request
with request.urlopen(ipad_detail_url) as f:
ipad_detail_url = f.geturl()
print(ipad_detail_url)
ipad_detail_code = requests.get(ipad_detail_url).status_code
ipad_detail_date = requests.get(ipad_detail_url).text
time.sleep(1)
print(ipad_detail_code)
if ipad_detail_code == 200:
soup = BeautifulSoup(ipad_detail_date,'lxml')
if id =='0':
id ='个人'
titles = soup.select('h1.info_titile')
categorys = soup.select('#nav > div')
prices = soup.select('div.info_massege.left > div.price_li > span > i')
regions = soup.select('div.info_massege.left > div.palce_li > span > i')
view = soup.select('span.look_time')[0].get_text() #直接拿了
else:
id = '商户'
titles = soup.select('h1')
categorys = soup.select('#header > div.breadCrumb.f12')
prices = soup.select('div.su_con > span')
regions = soup.select('span.c_25d')
view = get_detail_views(ipad_detail_url)
with open(path + id + str(time1) + '.txt', 'a+') as text:
date = {#不用再循环了
'title': titles[0].get_text(),
'category': categorys[0].get_text().replace('\n','>').replace('\r','').replace('\t','').replace(' ','')if len(categorys) > 0 else 'none',#要做好判断
'price': prices[0].get_text()if len(prices) > 0 else 'none',
'region': regions[0].get_text().replace('\n','').replace('\r','').replace('\t','').replace(' ','')if len(regions) > 0 else 'none',
'view': view
}
print(date.values())
text.write(str(date.values()))
text.write('\n')
def get_detail_views(url='http://bj.58.com/pingbandiannao/27609273161793x.shtml?psid=103856697193428913414588056&entinfo=27609273161793_0'):
url = url.split('?')[0]
url = url.split('/')[-1]
infoid = url.strip('x.shtml') #strip() 方法用于移除字符串头尾指定的字符(默认为空格),split()是切割
url='http://jst1.58.com/counter?infoid={}'.format(infoid)
headers = {
'User-Agent': r'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36',
'Cookie': r'id58=c5/ns1ct99sKkWWeFSQCAg==; city=bj; 58home=bj; ipcity=yiwu%7C%u4E49%u4E4C%7C0; als=0; myfeet_tooltip=end; bj58_id58s="NTZBZ1Mrd3JmSDdENzQ4NA=="; sessionid=021b1d13-b32e-407d-a76f-924ec040579e; bangbigtip2=1; 58tj_uuid=0ed4f4ba-f709-4c42-8972-77708fcfc553; new_session=0; new_uv=1; utm_source=; spm=; init_refer=; final_history={}; bj58_new_session=0; bj58_init_refer=""; bj58_new_uv=1'.format(
str(infoid)),
'Accept': '*/*',
'Accept-Encoding': 'gzip, deflate, sdch',
'Accept-Language': 'zh-CN,zh;q=0.8',
'Cache-Control': 'max-age=0',
'Connection': 'keep-alive',
'Host': 'jst1.58.com',
'Referer': r'http://bj.58.com/pingbandiannao/{}x.shtml'.format(infoid)
}
web_date = requests.get(url,headers=headers).text
soup = BeautifulSoup(web_date,'lxml')
views = soup.text.split('=')[-1]
print(views)
return views
def b2c_or_c2c(sell=0,pages=2):
if sell == 0:
links = ['http://bj.58.com/pbdn/0/pn{}/'.format(i) for i in range(1, pages)]
else:
links = ['http://bj.58.com/pbdn/1/pn{}/'.format(i) for i in range(1, pages)]
for link in links:
get_ipads_links(link)
b2c_or_c2c(sell=1)
#ipad_detail(ipad_detail_url= 'http://jm.58.com/pingbandiannao/27602121535432x.shtml?adtype=1&entinfo=27602121535432_0&psid=198431012193429552236749177',id='1')
#ipad_detail(ipad_detail_url= 'http://zhuanzhuan.58.com/detail/783469171049086980z.shtml?fullCate=5%2C38484%2C23094&fullLocal=1&from=pc',id='0')
#get_detail_views()
#ipad_detail(ipad_detail_url= 'http://jump.zhineng.58.com/jump?target=pZwY0jCfsvFJsWN3shPfUiqkpyOMmh78uA-6UhO6UztzP1N3nj0Qn1D3PHTLng980v6YUykKnH93njEdPjmOnHb1PjcOnW0knjTQnH9zP1nLTHE3rHnkrjTvTHEKnW0drjTLnHnQrjNkP1DKnHTkTH91THc1njbYTHDKnHELPH0YrjcQPj9knTDQTyQG0Lw_uyuYTHDKnE7wTiYQTEDkTHTKTyu6UZP-TyDQuj6-uHI-syNOn1nVPjIhPBd6ujmzsHcdPWb1nj7-PHDLPkDzrH9YPHbYnkDQrHckn1bzP1D3rH9Ynj9KTHc1njbYTHDKnEDKTEDKpZwY0jCfsvFJsWN3shPfUiqkmhw8s1Df0A3Qsk78IyQ_THDznz33ra3znW08nH0vTHTKPvwhmWTdnAcLn1TLuWn3nk&psid=188045469193429270001182737&entinfo=27580713185071_0',id='1')
总结
0.感觉谷歌的css路径比火狐的css路径要好
1.format的格式：,会不会有更复杂的（多参数）？？
links = ['http://bj.58.com/pbdn/1/pn{}/'.format(i) for i in range(1, pages)]
2.生成的时间作为“随机数”作为文件的命名
import time
time1 = time.strftime("%H:%M:%S").replace(':','-')
3.urllib的geturl()能获得跳转后的地址，无需获得headre中的location
from urllib import request
with request.urlopen(ipad_detail_url) as f:
ipad_detail_url = f.geturl()
print(ipad_detail_url)
4.get_detail_views中的url和cookie是怎么获得的？？？！
url='http://jst1.58.com/counter?infoid={}'.format(infoid)
headers = { 'User-Agent': r'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36', 'Cookie': r'id58=c5/ns1ct99sKkWWeFSQCAg==; city=bj; 58home=bj; ipcity=yiwu%7C%u4E49%u4E4C%7C0; als=0; myfeet_tooltip=end; bj58_id58s="NTZBZ1Mrd3JmSDdENzQ4NA=="; sessionid=021b1d13-b32e-407d-a76f-924ec040579e; bangbigtip2=1; 58tj_uuid=0ed4f4ba-f709-4c42-8972-77708fcfc553; new_session=0; new_uv=1; utm_source=; spm=; init_refer=; final_history={}; bj58_new_session=0; bj58_init_refer=""; bj58_new_uv=1'.format( str(infoid)), 'Accept': '*/*', 'Accept-Encoding': 'gzip, deflate, sdch', 'Accept-Language': 'zh-CN,zh;q=0.8', 'Cache-Control': 'max-age=0', 'Connection': 'keep-alive', 'Host': 'jst1.58.com', 'Referer': r'http://bj.58.com/pingbandiannao/{}x.shtml'.format(infoid) }
5.不需要一直for,可以categorys[0].get_text()
date = {#不用再循环了
'title': titles[0].get_text(),
'category': categorys[0].get_text().replace('\n','>').replace('\r','').replace('\t','').replace(' ','')if len(categorys) > 0 else 'none',#要做好判断
'price': prices[0].get_text()if len(prices) > 0 else 'none',
'region': regions[0].get_text().replace('\n','').replace('\r','').replace('\t','').replace(' ','')if len(regions) > 0 else 'none',
'view': view
}
for title, category, price, region, view in zip(titles, categorys, prices, regions, views):
date = {
'title': title[0].get_text(),
'category': category.get_text().replace('\n','>').replace('\r','').replace('\t','').replace(' ',''),
'price': price.get_text(),
'region': region.get_text(),
'view': view.get_text()
}
6.split()与strip()很有用
url = url.split('?')[0]
url = url.split('/')[-1]
infoid = url.strip('x.shtml') #strip() 方法用于移除字符串头尾指定的字符(默认为空格),split()是切割
