我想每隔几分钟跑一次蜘蛛。为此,在我的项目中放置了以下脚本。
import schedule, os
from scrapy.crawler import CrawlerProcess
from scrapy.utils.project import get_project_settings
def job():
process = CrawlerProcess(get_project_settings())
process.crawl('amazon_spider')
process.start() # error: twisted.internet.error.ReactorNotRestartable
#process.start(stop_after_crawl=False) #process get stuck
while True:
schedule.run_pending()
schedule.every().minutes.do(job)
在此过程中,出现以下错误:
twisted.internet.error.ReactorNotRestartable 或卡住,如果我放入 process.start(stop_after_crawl = False)
在以前发布的stackoverflow中,我也尝试这样做:
from twisted.internet import reactor
from amazon.spiders.amazon_spider import AmazonSpider
from scrapy.crawler import CrawlerRunner
def run_crawl():
runner = CrawlerRunner({
'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)',
})
deferred = runner.crawl(AmazonSpider)
deferred.addCallback(reactor.callLater, 10, run_crawl)
return deferred
run_crawl()
reactor.run()
该过程再次陷入parse函数的中间。我真的不知道下一步该怎么做。如果您有想法,请告诉我。预先谢谢您....(顺便说一下,它不是重复的,因为同一主题的帖子无法解决我的问题。
答案 0 :(得分:0)
我使用apscheduler
pip install apscheduler
然后
# -*- coding: utf-8 -*-
from scrapy.crawler import CrawlerProcess
from scrapy.utils.project import get_project_settings
from apscheduler.schedulers.twisted import TwistedScheduler
from Demo.spiders.baidu import YourSpider
process = CrawlerProcess(get_project_settings())
scheduler = TwistedScheduler()
scheduler.add_job(process.crawl, 'interval', args=[YourSpider], seconds=10)
scheduler.start()
process.start(False)