随笔分类 - 爬虫 / Scrapy框架
摘要：命令参考：[https://github.com/scrapy/scrapyd-client](https://github.com/scrapy/scrapyd-client) [https://scrapyd.readthedocs.io](https://scrapyd.readthedocs
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摘要：scrapy本身是自带支持HTTP2的爬取： [https://docs.scrapy.org/en/latest/topics/settings.html?highlight=H2DownloadHandler#download-handlers-base](https://docs.scrapy
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摘要：**高级方法：** **一般方法：** 运行爬虫时使用-a传递参数 ```Bash scrapy crawl 爬虫名 -a key=values ``` 然后在爬虫类的__init__魔法方法中获取kwargs ```Python class Bang123Spider(RedisCrawlSpid
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摘要：settings.py中设置配置项 ```Python MONGODB_HOST = "127.0.0.1" MONGODB_PORT = 27017 MONGODB_DB_NAME = "bang123" ``` pipelines.py： ```Python from scrapy.pipeli
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摘要：scrapy特性就是效率高，异步，如果非要集成selenium实际上意义不是特别大....因为selenium慢.... 案例：淘宝首页推荐商品的标题获取 爬虫类 toabao.py ```Python import scrapy from scrapy.http import HtmlRespon
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摘要：安装包 ```Python pip install -U scrapy-redis ``` settings.py ```Python ##### Scrapy-Redis ##### ### Scrapy指定Redis 配置 ### # 其他默认配置在scrapy_redis.default.py
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摘要：参考官方文档：[https://docs.scrapy.org/en/latest/topics/jobs.html?highlight=JOBDIR#jobs-pausing-and-resuming-crawls](https://docs.scrapy.org/en/latest/topics
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摘要：CrawlSpider类型的爬虫会根据指定的rules规则自动找到url比自动爬取。 优点：适合整站爬取，自动翻页爬取 缺点：比较难以通过meta传参，只适合一个页面就能拿完数据的。 ```Python import scrapy from scrapy.http import HtmlRespon
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摘要：num = 0 ```Python import scrapy from scrapy.http import HtmlResponse from scrapy_demo.items import DoubanItem """ 这个例子主要是学习meta传参。 """ class DoubanSpi
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摘要：假设我们在settings.py定义了一个IP地址池 ```Bash ##### 自定义设置 IP_PROXY_POOL = ( "127.0.0.1:6789", "127.0.0.1:6789", "127.0.0.1:6789", "127.0.0.1:6789", ) ``` 要在爬虫文件中
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摘要：```Python # Scrapy settings for scrapy_demo project # # For simplicity, this file contains only settings considered important or # commonly used. You
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摘要：```Python import scrapy from scrapy.http.request import Request from scrapy.http.response.html import HtmlResponse from scrapy_demo.items import Forum
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摘要：# 创建项目 **执行命令** ```Bash scrapy startproject ``` # **项目结构** 
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