目标：https://hr.tencent.com/position.php?&start=0#a
爬取所有的职位信息信息
职位名职位url职位类型职位人数工作地点发布时间3.1. 配置需要爬取的目标变量
新手学习，Python 教程/工具/方法/解疑＋V：itz992 class TecentjobItem(scrapy.Item): # define the fields for your item here like: positionname = scrapy.Field() positionlink = scrapy.Field() positionType = scrapy.Field() peopleNum = scrapy.Field() workLocation = scrapy.Field() publishTime = scrapy.Field()3.2. 写爬虫文件scrapy
# -*- coding: utf-8 -*- import scrapy from tecentJob.items import TecentjobItem class TencentSpider(scrapy.Spider): name = 'tencent' allowed_domains = ['tencent.com'] url = 'https://hr.tencent.com/position.php?&start=' offset = 0 start_urls = [url + str(offset)] def parse(self, response): for each in response.xpath("//tr[@class = 'even'] | //tr[@class = 'odd']"): # 初始化模型对象 item = TecentjobItem() item['positionname'] = each.xpath("./td[1]/a/text()").extract()[0] item['positionlink'] = each.xpath("./td[1]/a/@href").extract()[0] item['positionType'] = each.xpath("./td[2]/text()").extract()[0] item['peopleNum'] = each.xpath("./td[3]/text()").extract()[0] item['workLocation'] = each.xpath("./td[4]/text()").extract()[0] item['publishTime'] = each.xpath("./td[5]/text()").extract()[0] yield item if self.offset < 100: self.offset += 10 # 将请求重写发送给调度器入队列、出队列、交给下载器下载 # 拼接新的rurl，并回调parse函数处理response # yield scrapy.Request(url， callback = self.parse) yield scrapy.Request(self.url + str(self.offset), callback=self.parse)3.3. 编写yield需要的管道文件
import json class TecentjobPipeline(object): def __init__(self): self.filename = open("tencent.json", 'wb') def process_item(self, item, spider): text = json.dumps(dict(item),ensure_ascii=False) + "\n" self.filename.write(text.encode('utf-8')) return item def close_spider(self, spider): self.filename.close()3.4. setting中配置请求抱头信息
DEFAULT_REQUEST_HEADERS = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'Accept-Language': 'en', } 新手学习，Python 教程/工具/方法/解疑＋V：itz992