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crops_spider.py
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crops_spider.py
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# -*- coding:utf-8 -*-
# ------------------------------------------------------
# 版本：py2.7
# 日期：2017-03-18
# 作者：今孝
# 目标网址：http://www.cgris.net/query/croplist.php#
# ------------------------------------------------------
'''爬取主要的信息 但是有个别会遗漏，需要再次爬取'''
from selenium import webdriver
import re,sys,time,pymysql
reload(sys) #解决编码
sys.setdefaultencoding('utf-8')
def connectDB():
host="localhost"
dbName="qitazuowu" ####大类参数修改处----数据库名
user="root"
password="root"
db=pymysql.connect(host,user,password,dbName,charset='utf8')
return db #一定要返回连接的db
cursorDB=db.cursor()
return cursorDB
y=1;create=1
ziduan_list=[]
url='http://www.cgris.net/query/do.php#其它作物,橡胶' ####修改参数处----小类的地址需要修改
browser = webdriver.Chrome()
browser.get(url)
browser.implicitly_wait(3)
browser.find_element_by_css_selector('div[onclick="query()"]').click()
browser.implicitly_wait(2)
reg=r',(.*?)$'
table_name1=re.findall(reg,url)[0]
print table_name1
html=browser.page_source
reg=r'<td class="cap">(.*?)</td>'
reg=re.compile(reg,re.S)
count=re.findall(reg,html)
ziduan_count=len(count)-4 #字段的个数
yushu=ziduan_count%3
if ziduan_count%3==0:
ziduan_count=ziduan_count/3
else:
ziduan_count=ziduan_count/3+1
for i in range(1,ziduan_count+1):
for j in range(1,6,2):
if i==ziduan_count:
if yushu==0:
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child('+str(j)+')'
first_col=browser.find_element_by_css_selector(a).text
ziduan_list.append(first_col)
elif yushu==1:
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child(1)'
first_col=browser.find_element_by_css_selector(a).text
ziduan_list.append(first_col)
break
elif yushu==2:
for k in range(1,4,2):
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child('+str(k)+')'
first_col=browser.find_element_by_css_selector(a).text
ziduan_list.append(first_col)
break
else:
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child('+str(j)+')'
first_col=browser.find_element_by_css_selector(a).text
ziduan_list.append(first_col)
if create==1:
'''创建数据表'''
sql_createTable="CREATE TABLE IF NOT EXISTS "+table_name1+" (id int(11) NOT NULL AUTO_INCREMENT,name varchar(255),"+' varchar(255),'.join(ziduan_list)+" varchar(255),PRIMARY KEY (`id`))ENGINE=MyISAM DEFAULT CHARSET=utf8"
print sql_createTable
DB_create=connectDB()
cur_create=DB_create.cursor()
cur_create.execute(sql_createTable)
DB_create.close()
create=0
browser.find_element_by_id('lasthehe').click()
con_list=[];value_list=[]
while y<5890: ####修改参数----看一共有多少个就修改这里的参数
try:
con_list.append(table_name1)
value_list.append('%s')
for i in range(1,ziduan_count+1):
for j in range(2,7,2):
if i==ziduan_count:
if yushu==0:
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child('+str(j)+')'
first_col=browser.find_element_by_css_selector(a).text
con_list.append(first_col)
value_list.append('%s')
elif yushu==1:
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child(2)'
first_col=browser.find_element_by_css_selector(a).text
con_list.append(first_col)
value_list.append('%s')
break
elif yushu==2:
for k in range(2,5,2):
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child('+str(k)+')'
first_col=browser.find_element_by_css_selector(a).text
con_list.append(first_col)
value_list.append('%s')
break
else:
a='#r2 > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(1) > div:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child('+str(i)+') > td:nth-child('+str(j)+')'
first_col=browser.find_element_by_css_selector(a).text
con_list.append(first_col)
value_list.append('%s')
index_1=ziduan_list.index('统一编号')
sql_quchong="select * from "+table_name1+" where 统一编号="+"'"+con_list[index_1+1]+"'"
sql="insert into "+table_name1+"("+"name,"+','.join(ziduan_list)+")"+"value("+','.join(value_list)+")"
DB_insert=connectDB()
cur_insert=DB_insert.cursor()
if cur_insert.execute(sql_quchong):
DB_insert.commit()
DB_insert.close()
con_list=[]
value_list=[]
print '已存在',y
else:
cur_insert.execute(sql,con_list)
DB_insert.commit()
DB_insert.close()
con_list=[]
value_list=[]
browser.find_element_by_id('prehehe').click()
time.sleep(5)
except Exception,e:
print e
time.sleep(5)
continue
y+=1