Scrapy：腾讯招聘整站数据爬取

项目地址：https://hr.tencent.com/

步骤一、分析网站结构和待爬取内容

以下省略一万字

 

步骤二、上代码（不能略了）

 1、配置items.py

 1 import scrapy
 2 
 3 
 4 class HrTencentItem(scrapy.Item):
 5     # define the fields for your item here like:
 6     # name = scrapy.Field()
 7     # pass
 8     position_name = scrapy.Field()#职位名称
 9     position_type = scrapy.Field()#职位类别
10     detail_url = scrapy.Field()
11     people_count = scrapy.Field()
12     work_city = scrapy.Field()
13     release_date = scrapy.Field()#发布时间
14     job_description = scrapy.Field()#工作描述
15     job_require = scrapy.Field()#工作要求

2、配置settings.py

配置mongo

NEWSPIDER_MODULE = 'hr_tencent.spiders'
MONGO_URL ='localhost'
MONGO_DB ='hrtencent'

切记注册ITEM_PIPELINES 

 ITEM_PIPELINES = { # 'hr_tencent.pipelines.HrTencentPipeline': 300, 'hr_tencent.pipelines.MongoPipeline': 400, } 

3.到spider文件夹里面执行指令 scrapy genspider tencent 

4、打开自动生成的tencent.py文件，进行编辑

 1 # -*- coding: utf-8 -*-
 2 import scrapy
 3 from hr_tencent.items import HrTencentItem
 4 
 5 
 6 class TencentSpider(scrapy.Spider):
 7     name = 'tencent'
 8     allowed_domains = ['hr.tencent.com']
 9     start_urls = ['https://hr.tencent.com/position.php']
10     front_url = "https://hr.tencent.com/"
11     def parse(self, response):
12 
13         tencenthr = response.xpath('//tr[@class="even"] | //tr[@class="odd"]')
14         for job in tencenthr:
15             item = HrTencentItem()
16             item["position_name"] = job.xpath('.//a/text()').extract_first()
17             item["detail_url"] = self.front_url + job.xpath('.//a/@href').extract_first()
18             item["position_type"] = job.xpath('.//td[2]/text()').extract_first()
19             item["people_count"] = job.xpath('.//td[3]/text()').extract_first()
20             item["work_city"] = job.xpath('.//td[4]/text()').extract_first()
21             item["release_date"] = job.xpath('.//td[5]/text()').extract_first()
22             yield scrapy.Request(url=item["detail_url"], callback=self.detail_parse, meta={"item": item})
23         next_url = self.front_url + response.xpath('//div[@class="pagenav"]/a[@id="next"]/@href').extract_first()
24         yield scrapy.Request(url=next_url, callback=self.parse)
25 
26 
27 
28     def detail_parse(self, response):
29         item = response.meta["item"]
30         node_list = response.xpath('//ul[@class="squareli"]')
31         item["job_description"] = ''.join(node_list[0].xpath("./li/text()").extract())
32         item["job_require"] = ''.join(node_list[1].xpath("./li/text()").extract())
33         yield item
View Code

5、配置pipelines.py文件

 1 import pymongo
 2 
 3 
 4 class MongoPipeline(object):
 5     def __init__(self,mongo_url,mongo_db):
 6         self.mongo_url = mongo_url
 7         self.mongo_db = mongo_db
 8     @classmethod
 9     def from_crawler(cls,crawler):
10         return cls(
11             mongo_url = crawler.settings.get('MONGO_URL'),
12             mongo_db=crawler.settings.get('MONGO_DB')
13 
14         )
15     def open_spider(self,spider):
16         self.client = pymongo.MongoClient(self.mongo_url)
17         self.db = self.client[self.mongo_db]
18 
19     def process_item(self,item,spider):
20         name = item.__class__.__name__
21         self.db[name].insert(dict(item))
22         return item
23 
24     def close_spider(self,spider):
25         self.client.close()
View Code

 

6、新建一个run.py文件，为了不每次运行都敲指令，直接运行run.py即可

1 # -*- coding:utf-8 -*-
2 from scrapy import cmdline
3 
4 cmdline.execute("scrapy crawl tencent".split())
View Code

 

7、运行本地或服务器上的mongo数据库（远程mongo数据库地址需要自己配）

8、执行run文件数据到手

 

posted @ 2019-04-22 15:35  点点花飞谢  阅读(383)  评论(0)  编辑  收藏  举报