Close a scrapy spider when a condition is met and return the output object

问题

I have made a spider to get reviews from a page like this here using scrapy. I want product reviews only till a certain date(2nd July 2016 in this case). I want to close my spider as soon as the review date goes earlier than the given date and return the items list. Spider is working well but my problem is that i am not able to close my spider if the condition is met..if i raise an exception, spider closes without returning anything. Please suggest the best way to close the spider manually. Here is my code:

from scrapy.spiders import CrawlSpider, Rule
from scrapy.linkextractors import LinkExtractor
from scrapy import Selector
from tars.items import FlipkartProductReviewsItem
import re as r
import unicodedata
from datetime import datetime 

class Freviewspider(CrawlSpider):
    name = "frs"
    allowed_domains = ["flipkart.com"]
    def __init__(self, *args, **kwargs):
        super(Freviewspider, self).__init__(*args, **kwargs)
        self.start_urls = [kwargs.get('start_url')]


    rules = (
        Rule(LinkExtractor(allow=(), restrict_xpaths=('//a[@class="nav_bar_next_prev"]')), callback="parse_start_url", follow= True),
)


    def parse_start_url(self, response):

        hxs = Selector(response)
        titles = hxs.xpath('//div[@class="fclear fk-review fk-position-relative line "]')

        items = []

        for i in titles:

            item = FlipkartProductReviewsItem()

            #x-paths:

            title_xpath = "div[2]/div[1]/strong/text()"
            review_xpath = "div[2]/p/span/text()"
            date_xpath = "div[1]/div[3]/text()"



            #field-values-extraction:

            item["date"] = (''.join(i.xpath(date_xpath).extract())).replace('\n ', '')
            item["title"] = (''.join(i.xpath(title_xpath).extract())).replace('\n ', '')

            review_list = i.xpath(review_xpath).extract()
            temp_list = []
            for element in review_list:
                temp_list.append(element.replace('\n ', '').replace('\n', ''))

            item["review"] = ' '.join(temp_list)

            xxx = datetime.strptime(item["date"], '%d %b %Y ')
            comp_date = datetime.strptime('02 Jul 2016 ', '%d %b %Y ')
            if xxx>comp_date:
                items.append(item)
            else:
                break

        return(items)

回答1:

To force spider to close you can use raise CloseSpider exception as described here in scrapy docs. Just be sure to return/yield your items before you raise the exception.

来源：https://stackoverflow.com/questions/38331428/close-a-scrapy-spider-when-a-condition-is-met-and-return-the-output-object