我在一个Scrapy项目中有两个蜘蛛。 Spider1抓取页面或整个网站的列表并分析内容。 Spider2使用Splash在Google上获取网址并将该列表传递给Spider1。如何从另一个开始Scrapy蜘蛛
所以,Spider1抓取和分析内容,并可以在不被Spider2
# coding: utf8
from scrapy.spiders import CrawlSpider
import scrapy
class Spider1(scrapy.Spider):
name = "spider1"
tokens = []
query = ''
def __init__(self, *args, **kwargs):
'''
This spider works with two modes,
if only one URL it crawls the entire website,
if a list of URLs only analyze the page
'''
super(Spider1, self).__init__(*args, **kwargs)
start_url = kwargs.get('start_url') or ''
start_urls = kwargs.get('start_urls') or []
query = kwargs.get('q') or ''
if google_query != '':
self.query = query
if start_url != '':
self.start_urls = [start_url]
if len(start_urls) > 0:
self.start_urls = start_urls
def parse(self, response):
'''
Analyze and store data
'''
if len(self.start_urls) == 1:
for next_page in response.css('a::attr("href")'):
yield response.follow(next_page, self.parse)
def closed(self, reason):
'''
Finalize crawl
'''
为Spider2
# coding: utf8
import scrapy
from scrapy_splash import SplashRequest
from scrapy.crawler import CrawlerProcess
from scrapy.utils.project import get_project_settings
class Spider2(scrapy.Spider):
name = "spider2"
urls = []
page = 0
def __init__(self, *args, **kwargs):
super(Spider2, self).__init__(*args, **kwargs)
self.query = kwargs.get('q')
self.url = kwargs.get('url')
self.start_urls = ['https://www.google.com/search?q=' + self.query]
def start_requests(self):
splash_args = {
'wait:': 2,
}
for url in self.start_urls:
splash_args = {
'wait:': 1,
}
yield SplashRequest(url, self.parse, args=splash_args)
def parse(self, response):
'''
Extract URLs to self.urls
'''
self.page += 1
def closed(self, reason):
process = CrawlerProcess(get_project_settings())
for url in self.urls:
print(url)
if len(self.urls) > 0:
process.crawl('lexi', start_urls=self.urls, q=self.query)
process.start(False)
的代码被称为可使用当运行Spider2我有这样的错误:twisted.internet.error.ReactorAlreadyRunning
和Spider1是在没有URL列表的情况下调用。 我尝试使用Scrapy文档建议的CrawlRunner,但它是同样的问题。 我尝试使用CrawlProcess里面的解析方法,它“工作”,但是,我仍然有错误消息。在解析方法中使用CrawlRunner时,它不起作用。
我不知道,但我认为蜘蛛必须在两个不同的文件 –
他们在分开的文件。 –