python爬虫入门(6)-Scrapy基本使用

源码:链接:http://pan.baidu.com/s/1dEK82hb 密码:9flo
 
创建项目                                 scrapy startproject tutorial
爬取                                         scrapy crawl dmoz
爬取并保存为json格式           scrapy crawl dmoz -o items.json -t json

scrapy shell "网址/资源"
载入之后将能得到response的回应
response.body
response.headers
>>>response.xpath('//title')
>>>response.xpath('//title/text()').extract()
 
 

编辑Item:
    # -*- coding: utf-8 -*-
    # Define here the models for your scraped items
    #
    # See documentation in:
    # http://doc.scrapy.org/en/latest/topics/items.html
    import scrapy
    class DmozItem(scrapy.Item):
        # define the fields for your item here like:
        # name = scrapy.Field()
        title = scrapy.Field()
        link = scrapy.Field()
        desc = scrapy.Field()
 
编辑蜘蛛:
 
 
爬取并保存为json格式
至此,根目录下会多出一个json文件
 

 





原文地址:https://www.cnblogs.com/tcheng/p/6888939.html