1. 有些scrapy命令，只有在scrapy project根目錄下才available,比如crawl命令

2 . scrapy genspider taobao http://detail.tmall.com/item.htm?id=12577759834

自動(dòng)在spider目錄下生成taobao.py

#?-*-?coding:?utf-8?-*- import?scrapyclass?TaobaoSpider(scrapy.Spider):name?=?"taobao"allowed_domains?=?["http://detail.tmall.com/item.htm?id=12577759834"]start_urls?=?('http://www.http://detail.tmall.com/item.htm?id=12577759834/',)def?parse(self,?response):pass

還有其它模板可以用

scrapy genspider taobao2 http://detail.tmall.com/item.htm?id=12577759834 ?--template=crawl

#?-*-?coding:?utf-8?-*- import?scrapy from?scrapy.contrib.linkextractors?import?LinkExtractor from?scrapy.contrib.spiders?import?CrawlSpider,?Rulefrom?project004.items?import?Project004Itemclass?Taobao2Spider(CrawlSpider):name?=?'taobao2'allowed_domains?=?['http://detail.tmall.com/item.htm?id=12577759834']start_urls?=?['http://www.http://detail.tmall.com/item.htm?id=12577759834/']rules?=?(Rule(LinkExtractor(allow=r'Items/'),?callback='parse_item',?follow=True),)def?parse_item(self,?response):i?=?Project004Item()#i['domain_id']?=?response.xpath('//input[@id="sid"]/@value').extract()#i['name']?=?response.xpath('//div[@id="name"]').extract()#i['description']?=?response.xpath('//div[@id="description"]').extract()return?i

3.列出當(dāng)前項(xiàng)目所有spider:?scrapy list

4.view命令在瀏覽器中查看網(wǎng)頁內(nèi)容

? ?scrapy view http://www.example.com/some/page.html

5.查看設(shè)置

scrapy settings --get BOT_NAME

6.運(yùn)行自包含的spider，不需要?jiǎng)?chuàng)建項(xiàng)目

scrapy runspider <spider_file.py>

7.scrapy project的部署：?scrapy deploy?

部署spider首先要有spider的server環(huán)境，一般使用scrapyd

安裝scrapyd:pip install scrapyd

文檔：http://scrapyd.readthedocs.org/en/latest/install.html

8.所有可用命令

C:\Users\IBM_ADMIN\PycharmProjects\pycrawl\project004>scrapy

Scrapy 0.24.4 - project: project004

Usage:

? scrapy <command> [options] [args]

Available commands:

? bench ? ? ? ? Run quick benchmark test

? check ? ? ? ? Check spider contracts

? crawl ? ? ? ? Run a spider

? deploy ? ? ? ?Deploy project in Scrapyd target

? edit ? ? ? ? ?Edit spider

? fetch ? ? ? ? Fetch a URL using the Scrapy downloader

? genspider ? ? Generate new spider using pre-defined templates

? list ? ? ? ? ?List available spiders

? parse ? ? ? ? Parse URL (using its spider) and print the results

? runspider ? ? Run a self-contained spider (without creating a project)

? settings ? ? ?Get settings values

? shell ? ? ? ? Interactive scraping console

? startproject ?Create new project

? version ? ? ? Print Scrapy version

? view ? ? ? ? ?Open URL in browser, as seen by Scrapy

轉(zhuǎn)載于:https://blog.51cto.com/dingbo/1600296

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