Scrapy不会将数据写入文件

Question

他在Scrapy中创建了一个蜘蛛：items.py：

from scrapy.item import Item, Field

class dns_shopItem (Item):

     # Define the fields for your item here like:

     # Name = Field ()

     id = Field ()

     idd = Field ()

dns_shop_spider.py：

from scrapy.contrib.spiders import CrawlSpider, Rule

from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor

from scrapy.contrib.loader.processor import TakeFirst

from scrapy.contrib.loader import XPathItemLoader

from scrapy.selector import HtmlXPathSelector

from dns_shop.items import dns_shopItem

 

class dns_shopLoader (XPathItemLoader):

     default_output_processor = TakeFirst ()

 

class dns_shopSpider (CrawlSpider):

    name = "dns_shop_spider"

    allowed_domains = ["www.playground.ru"]

    start_urls = ["http://www.playground.ru/files/stalker_clear_sky/"]

    rules = (

    Rule (SgmlLinkExtractor (allow = ('/ files / s_t_a_l_k_e_r_chistoe_nebo')), follow = True),

    Rule (SgmlLinkExtractor (allow = ('/ files / s_t_a_l_k_e_r_chistoe_nebo')), callback = 'parse_item'),

    )

    def parse_item (self, response):

        hxs = HtmlXPathSelector (response)

        l = dns_shopLoader (dns_shopItem (), hxs)

        l.add_xpath ('id', "/ html / body / table [2] / tbody / tr [5] / td [2] / table / tbody / tr / td / div [6] / h1/text ()" )

        l.add_xpath ('idd', "/ / html / body / table [2] / tbody / tr [5] / td [2] / table / tbody / tr / td / div [6] / h1/text () ")

        return l.load_item ()

运行以下命令：

scrapy crawl dns_shop_spider-o scarped_data_utf8.csv-t csv

此日志显示Scrapy遍历了所有必需的URL，但是为什么在启动Spider时不将其写入指定的文件。可能是什么问题？