在document之后,我可以从 Python 脚本运行 scrapy,但无法获得 scrapy 结果。
这是我的蜘蛛:
from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector
from items import DmozItem
class DmozSpider(BaseSpider):
name = "douban"
allowed_domains = ["example.com"]
start_urls = [
"http://www.example.com/group/xxx/discussion"
]
def parse(self, response):
hxs = HtmlXPathSelector(response)
rows = hxs.select("//table[@class='olt']/tr/td[@class='title']/a")
items = []
# print sites
for row in rows:
item = DmozItem()
item["title"] = row.select('text()').extract()[0]
item["link"] = row.select('@href').extract()[0]
items.append(item)
return items
注意最后一行,如果我运行,我会尝试使用返回的解析结果:
scrapy crawl douban
终端可以打印返回结果
但我无法从 Python 脚本中获取返回结果。这是我的 Python 脚本:
from twisted.internet import reactor
from scrapy.crawler import Crawler
from scrapy.settings import Settings
from scrapy import log, signals
from spiders.dmoz_spider import DmozSpider
from scrapy.xlib.pydispatch import dispatcher
def stop_reactor():
reactor.stop()
dispatcher.connect(stop_reactor, signal=signals.spider_closed)
spider = DmozSpider(domain='www.douban.com')
crawler = Crawler(Settings())
crawler.configure()
crawler.crawl(spider)
crawler.start()
log.start()
log.msg("------------>Running reactor")
result = reactor.run()
print result
log.msg("------------>Running stoped")
我试图在 得到结果reactor.run()
,但它什么也没返回,
我怎样才能得到结果?