【尝试】scrapy继创建工程后创建爬虫程序

E:\movie>scrapy genspider meiju meijutt.com
Created spider 'meiju' using template 'basic' in module:
  movie.spiders.meiju

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• scrapy.cfg  项目的配置信息，主要为Scrapy命令行工具提供一个基础的配置信息。
•                                                                                     （真正爬虫相关的配置信息在settings.py文件中）
• items.py    设置数据存储模板，用于结构化数据，如：Django的Model
• pipelines    数据处理行为，如：一般结构化的数据持久化
• settings.py 配置文件，如：递归的层数、并发数，延迟下载等
• spiders      爬虫目录，如：创建文件，编写爬虫规则

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---------------设置数据存储模板(1)--------------------

items.py

import scrapy

class MovieItem(scrapy.Item):
    # define the fields for your item here like:
    name = scrapy.Field()

----------------------编写爬虫(2)---------------------------

# -*- coding: utf-8 -*-
import scrapy
from movie.items import MovieItem

class MeijuSpider(scrapy.Spider):
    name = 'meiju'
    allowed_domains = ['meijutt.com']
    start_urls = ['http://meijutt.com/']

    def parse(self, response):
        movies = response.xpath('//div[@class="list_2"]/ul/li')

        for each_movie in movies:
            item = MovieItem()
            item['name'] = each_movie.xpath('./a/@title').extract()[0]
            yield item

-------------设置配置文件(3)----------------

settings.py增加如下内容

ITEM_PIPELINES = {'movie.pipelines.MoviePipeline':100}

--------------编写数据处理脚本(4)------------------

　pipelines.py

class MoviePipeline(object):
    def process_item(self, item, spider):
        with open("my_meiju.txt",'a') as fp:
            fp.write(item['name'].encode("utf8") + '\n')

---------执行爬虫（5）-----------

scrapy crawl meiju --nolog