拉勾 python_用python拉勾网的完整版

这是在爬取伯乐在线的基础之上的，所以就没重复代码。

在lagou.py

import scrapy

from scrapy.linkextractors import LinkExtractor

from scrapy.spiders import CrawlSpider, Rule

from ArticleSpider.utils.common import get_md5

from selenium import webdriver

import time

import pickle

from ArticleSpider.items import LagouJobItemLoader, LagouJobItem

from datetime import datetime

class LagouSpider(CrawlSpider):

name = 'lagou'

allowed_domains = ['www.lagou.com']

start_urls = ['https://www.lagou.com/']

# headers = {

# "HOST": "www.lagou.com",

# "Referer": 'https://www.lagou.com',

#

# 'User-Agent':"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.162 Safari/537.36"

# }

rules = (

Rule(LinkExtractor(allow=r'gongsi/j/\d+.html'), follow=True),

Rule(LinkExtractor(allow=r'zhaopin/.*'), follow=True),

Rule(LinkExtractor(allow=r'jobs/\d+.html'), callback='parse_job', follow=True),

)

def parse_job(self, response):

#解析拉勾网的职位

item_loader = LagouJobItemLoader(item=LagouJobItem(), response=response)

item_loader.add_css("title", ".job-name::attr(title)")

item_loader.add_value("url", response.url)

item_loader.add_value("url_object_id", get_md5(response.url))

item_loader.add_css("salary", ".job_request .salary::text")

item_loader.add_xpath("job_city", "//*[@class='job_request']/p/span[2]/text()")

item_loader.add_xpath("work_years", "//*[@class='job_request']/p/span[3]/text()")

item_loader.add_xpath("degree_need", "//*[@class='job_request']/p/span[4]/text()")

item_loader.add_xpath("job_type", "//*[@class='job_request']/p/span[5]/text()")

item_loader.add_css("tags", '.position-label li::text')

item_loader.add_css("publish_time", ".publish_time::text")

item_loader.add_css("job_advantage", ".job-advantage p::text")

item_loader.add_css("job_desc", ".job_bt div")

item_loader.add_css("job_addr", ".work_addr")

item_loader.add_css("company_name", "#job_company dt a img::attr(alt)")

item_loader.add_css("company_url", "#job_company dt a::attr(href)")

item_loader.add_value("crawl_time", datetime.now())

job_item = item_loader.load_item()

return job_item

def start_requests(self):

browser = webdriver.Chrome(executable_path="D:/Temp/chromedriver.exe")

browser.get("https://passport.lagou.com/login/login.html?service=https%3a%2f%2fwww.lagou.com%2f")

browser.find_element_by_xpath("/html/body/section/div[1]/div[2]/form/div[1]/input").send_keys("account")#需要输入正确的拉钩网账号

browser.find_element_by_xpath("/html/body/section/div[1]/div[2]/form/div[2]/input").send_keys("password")#需要输入拉钩网密码

print(browser.page_source)

browser.find_element_by_xpath("/html/body/section/div[1]/div[2]/form/div[5]").click()

time.sleep(10)

Cookies=browser.get_cookies()

# print(Cookies)

cookie_dict={}

for cookie in Cookies:

f=open('C:/Users/Dell/scrapytest/Scripts/ArticleSpider'+cookie['name']+'.lagou','wb')

pickle.dump(cookie,f)

f.close()

cookie_dict[cookie['name']]=cookie['value']

browser.close()

return[scrapy.Request(url=self.start_urls[0], dont_filter=True,cookies=cookie_dict)]

# return[scrapy.Request(url=self.start_urls[0], headers=self.headers,dont_filter=True,cookies=cookie_dict)]

在main中

from scrapy.cmdline import execute

import sys

import os

sys.path.append(os.path.dirname(os.path.abspath(__file__)))

# execute(["scrapy", "crawl", "jobbole"])

# execute(["scrapy", "crawl", "zhihu"])

execute(["scrapy", "crawl", "lagou"])

在items中

def remove_splash(value):

#去掉工作城市的斜线

return value.replace("/","")

def handle_jobaddr(value):

addr_list = value.split("\n")

addr_list = [item.strip() for item in addr_list if item.strip()!="查看地图"]

return "".join(addr_list)

class LagouJobItemLoader(ItemLoader):

#自定义itemloader

default_output_processor = TakeFirst()

class LagouJobItem(scrapy.Item):

#拉勾网职位信息

title = scrapy.Field()

url = scrapy.Field()

url_object_id = scrapy.Field()

salary = scrapy.Field()

job_city = scrapy.Field(

input_processor=MapCompose(remove_splash),

)

work_years = scrapy.Field(

input_processor = MapCompose(remove_splash),

)

degree_need = scrapy.Field(

input_processor = MapCompose(remove_splash),

)

job_type = scrapy.Field()

publish_time = scrapy.Field()

job_advantage = scrapy.Field()

job_desc = scrapy.Field()

job_addr = scrapy.Field(

input_processor=MapCompose(remove_tags, handle_jobaddr),

)

company_name = scrapy.Field()

company_url = scrapy.Field()

tags = scrapy.Field(

input_processor = Join(",")

)

crawl_time = scrapy.Field()

def get_insert_sql(self):

insert_sql = """

insert into lagou_job(title, url, url_object_id, salary, job_city, work_years, degree_need,

job_type, publish_time, job_advantage, job_desc, job_addr, company_name, company_url,

tags, crawl_time) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)

ON DUPLICATE KEY UPDATE salary=VALUES(salary), job_desc=VALUES(job_desc)

"""

params = (

self["title"], self["url"], self["url_object_id"], self["salary"], self["job_city"],

self["work_years"], self["degree_need"], self["job_type"],

self["publish_time"], self["job_advantage"], self["job_desc"],

self["job_addr"], self["company_name"], self["company_url"],

self["job_addr"], self["crawl_time"].strftime(SQL_DATETIME_FORMAT),

)

return insert_sql, params

在数据库的设计