spider_closed()函數未執行。如果我只給出打印語句它正在打印,但如果我執行任何函數調用並返回它不工作的值。如何在scrapy中完成所有爬網之後執行該功能?
import scrapy
import re
from pydispatch import dispatcher
from scrapy import signals
from SouthShore.items import Product
from SouthShore.internalData import internalApi
from scrapy.http import Request
class bestbuycaspider(scrapy.Spider):
name = "bestbuy_dca"
allowed_domains = ["bestbuy.ca"]
start_urls = ["http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+beds",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+night+stand",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+headboard",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+desk",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+bookcase",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+dresser",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+tv+stand",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+armoire",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+kids",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+changing+table",
"http://www.bestbuy.ca/Search/SearchResults.aspx?type=product&page=1&sortBy=relevance&sortDir=desc&pageSize=96&query=south+shore+furniture+baby"]
def __init__(self,jsondetails="",serverdetails="", *args,**kwargs):
super(bestbuycaspider, self).__init__(*args, **kwargs)
dispatcher.connect(self.spider_closed, signal=signals.spider_closed)
self.jsondetails = jsondetails
self.serverdetails=serverdetails
self.data = []
def parse(self,response):
#my stuff here
def spider_closed(self,spider):
print "returning values"
self.results['extractedData']=self.data
print self.results=internalApi(self.jsondetails,self.serverdetails)
yield self.results
1)我要調用一些功能和返回值刮掉
所以你想繼續在'spider_closed'中爬行?產生物品或請求? – eLRuLL
不,我想在蜘蛛關閉後返回抓取的項目,並在另一個py文件中調用另一個函數,因此它會執行一些操作並給出一些值。我需要附加並返回,我的爬行值和稱爲函數輸出在一起。 –
scrapy項目不存儲在內存中,當您調用'yield item'時,它們會被輸出。如果你想在輸出時處理每個項目,你將不得不使用管道,但是一旦蜘蛛結束就使用它們,這是一個非常糟糕的做法(因爲你必須自己存儲它們) – eLRuLL