Scrapy 框架 手动发送请求 POST 请求的发送

时间：2023-03-09 03:17:50
Scrapy 框架 手动发送请求 POST 请求的发送

手动发送请求

import scrapy

from choutiSpider.items import ChoutispiderItem

class ChoutiSpider(scrapy.Spider):

    name = 'chouti'

    # allowed_domains = ['www.xxx.com']

    start_urls = ['https://dig.****.com/r/scoff/hot/1']

    # 通用模板 url

    url = 'https://dig.****.com/r/scoff/hot/%s'

    page_num = 1

    def parse(self, response):

        div_list = response.xpath('//div[@id="content-list"]/div')

        # print(div_list)

        print(self.page_num)

        for div in div_list:

            content = div.xpath('./div[@class="news-content"]/div[1]/a/text()').extract_first().strip()

            author = div.xpath('./div[@class="news-content"]/div[2]/a[4]/b/text()').extract_first()

            # print(content, author)

            item = ChoutispiderItem()

            item['author'] = author

            item['content'] = content

            # 提交数据 到管道中

            yield item

        # 手动发送请求  分页爬取

        if self.page_num < 120:

            self.page_num += 1

            new_url = self.url % self.page_num

            # 发送请求 提交

            yield scrapy.Request(url=new_url, callback=self.parse)

post 请求发送

# 在scrapy框架中默认情况下cookie会被自动处理，无需手动！

class PostdemoSpider(scrapy.Spider):

    name = 'postdemo'

    allowed_domains = ['www.xxx.com']

    start_urls = ['https://fanyi.****.com/sug']

	# 调用父类的 发送请求的 方法

    def start_requests(self):

        for url in self.start_urls:

            data = {

                'kw': 'cat'

            }

            yield scrapy.FormRequest(url=url, formdata=data, callback=self.parse)

    def parse(self, response):

        print(response.text)

在scrapy框架中默认情况下cookie会被自动处理，无需手动！

settings 配置:

# Disable cookies (enabled by default)

# COOKIES_ENABLED = False

请求传参:

  • 二级详情页面 的 item 传递
import scrapy

from boosPro.items import BoosproItem

class BoosSpider(scrapy.Spider):

    name = 'boos'

    # allowed_domains = ['www.xxx.com']

    start_urls = ['https://www.****.com/c101010100/?query=python%E7%88%AC%E8%99%AB&page=1']

    url = 'https://www.****.com/c101010100/?query=python%E7%88%AC%E8%99%AB&page=%s'

    page_num = 1

    def parse(self, response):

        li_list = response.xpath('//div[@class="job-list"]/ul/li')

        for li in li_list:

            item = BoosproItem()

            title = li.xpath('.//div[@class="job-title"]/text()').extract_first()

            # 薪资 salary

            salary = li.xpath('.//div[@class="info-primary"]/h3/a/span/text()').extract_first()

            # 公司 company

            company = li.xpath('.//div[@class="company-text"]/h3/a/text()').extract_first()

            detail_url = 'https://www.zhipin.com' + li.xpath('.//div[@class="info-primary"]/h3/a/@href').extract_first()

            item['title'] = title

            item['salary'] = salary

            item['company'] = company

            # 对详情页的url进行手动请求的发送

            yield scrapy.Request(url=detail_url, callback=self.parsrDetail, meta={'item': item})

        if self.page_num <= 3:

            self.page_num += 1

            newUrl = self.url % self.page_num

            yield scrapy.Request(url=newUrl, callback=self.parse)

    # 用来解析详情页的相关的数据

    def parsrDetail(self, response):

        # 接收meta

        item = response.meta['item']

        job_desc = response.xpath('//*[@id="main"]/div[3]/div/div[2]/div[2]/div[1]/div//text()').extract()

        company_content = response.xpath('//*[@id="main"]/div[3]/div/div[2]/div[2]/div[2]/div/text()').extract_first()

        job_desc = ' '.join(job_desc)

        item['job_desc'] = job_desc

        item['company_content'] = company_content

        # print(job_desc, 1111111)

        yield item

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