登陆人人网爬取个人信息

创建scrapy工程

1 2	cd C:Spider_devappscrapyprojects scrapy startproject renren

创建定向爬虫

1 2	cd renren scrapy genspider Person renren.com

查看目录结构

定义items

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class RenrenItem(scrapy.Item):     # define the fields for your item here like:     # name = scrapy.Field()     sex = scrapy.Field()  # 性别     birthday = scrapy.Field()  # 生日     addr = scrapy.Field()  # 家乡

 编写爬虫

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# -*- coding: gbk -*- import scrapy   # 导入items中的数据项定义模块 from renren.items import RenrenItem   class PersonSpider(scrapy.Spider):     name = "Person"     allowed_domains = ['renren.com']     start_urls = ['http://www.renren.com/913043576/profile?v=info_timeline']       def start_requests(self):         return [scrapy.FormRequest('http://www.renren.com/PLogin.do',                                    formdata={'email':'15201417639','password':'kongzhagen.com'},                                    callback=self.login)]       def login(self,response):         for url in self.start_urls:             yield self.make_requests_from_url(url)       def parse(self, response):         item = RenrenItem()         basicInfo = response.xpath('//div[@id="basicInfo"]')         sex = basicInfo.xpath('div[2]/dl[1]/dd/text()').extract()[0]         birthday = basicInfo.xpath('div[2]/dl[2]/dd/a/text()').extract()         birthday = ''.join(birthday)         addr = basicInfo.xpath('div[2]/dl[3]/dd/text()').extract()[0]         item['sex'] = sex         item['addr'] = addr         item['birthday'] =birthday         return  item

 解释：

　　allowed_domains：定义允许访问的域名

　　start_urls：登陆人人网后访问的URL

　　start_requests：程序的开始函数，FormRequest定义了scrapy如何post提交数据，返回函数或迭代器，回调函数login。

　　login：登陆人人网之后的爬虫处理函数，make_requests_from_url处理start_urls中的url,其默认的回调函数为parse

　　parse：处理make_requests_from_url函数返回的结果

执行爬虫

1	scrapy crawl Person -o person.csv