scrapy_splash简单爬取淘宝页面信息

首先打开淘宝页面，搜索手机：
https://uland.taobao.com/sem/tbsearch?refpid=mm_26632258_3504122_32538762&clk1=04511dd93dde330d86022e9ce3a3dc46&keyword=手机&page=0

# 新建scrapy项目
scrapy startproject taobao
# 进入项目目录:
cd taobao
# 创建爬虫
scrapy genspider taobao_comment taobao.com

打开终端，运行docker：
sudo service docker start
运行splash容器：
sudo docker run -p 8050:8050 scrapinghub/splash

在浏览器输入：http://localhost:8050
得到下面的页面：
再来配置爬虫文件：

# settings.py

# 添加SPIDER_MIDDLEWARES
SPIDER_MIDDLEWARES = {
    'scrapy_splash.SplashDeduplicateArgsMiddleware': 100,
}
# DOWNLOADER_MIDDLEWARES 中添加Splash middleware：
DOWNLOADER_MIDDLEWARES = {
   'scrapy_splash.SplashCookiesMiddleware': 723,

    'scrapy_splash.SplashMiddleware': 725,

    'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware': 810,

    'taobao.middlewares.TaobaoDownloaderMiddleware': 543,

}
# 将最后几行的注释解开：
HTTPCACHE_ENABLED = True
HTTPCACHE_EXPIRATION_SECS = 0
HTTPCACHE_DIR = 'httpcache'
HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
SPLASH_URL = 'http://localhost:8050/'      #自己安装的docker里的splash位置
DUPEFILTER_CLASS = "scrapy_splash.SplashAwareDupeFilter"  # 添加DUPEFILTER_CLASS去重

# 将robots协议改为False：
ROBOTSTXT_OBEY = False

# taobao_comment.py

import scrapy

from scrapy_splash import SplashRequest

class TaobaoCommenSpider(scrapy.Spider):
    name = 'taobao_comment'
    allowed_domains = ['taobao.com']

    def start_requests(self):
        script = """
                    function main(splash, args)
                      splash:set_user_agent("Mozilla/5.0  Chrome/69.0.3497.100 Safari/537.36")
                      splash:go(args.url)
                      splash:wait(5)
                      return {html=splash:html()}
                    end
                """

        url = "https://uland.taobao.com/sem/tbsearch?refpid=mm_26632258_3504122_32538762&clk1=04511dd93dde330d86022e9ce3a3dc46&keyword=%E6%89%8B%E6%9C%BA&page=0"
        yield SplashRequest(url,self.parse,endpoint="execute",args={'lua_source': script, 'url': url})

    def parse(self, response):
        with open('taobao.html', 'w+') as f:
            f.write(response.text)

执行爬虫：scrapy crawl taobao_comment
发现目录中出现taobao.html，右键单击，在浏览器中运行：

到此一个scrapy-splash的简单网页抓取就完成了。