嗨伙计们我在python中写了一个爬虫来刮......
import scrapy
from c2.items import C2Item
try:
class C2(scrapy.Spider):
name = 'cn'
allowed_domains = ['priceraja.com']
start_urls = ['https://www.priceraja.com']
def parse_item(self, response):
Item = []
Item['url']=response.xpath('//a/@href/text()').extract()
yield Item
except Exception:
logging.exception("message")
我继续收到NotImplemented错误
2017-08-05 01:12:28 [scrapy.core.scraper] ERROR: Spider error processing
<GET
https://www.killerfeatures.com> (referer: None)
Traceback (most recent call last):
File "D:\Ana\lib\site-packages\twisted\internet\defer.py", line 653, in _
runCallbacks
current.result = callback(current.result, *args, **kw)
File "D:\Ana\lib\site-packages\scrapy\spiders\__init__.py", line 90, in
parse raise NotImplementedError
NotImplementedError
2017-08-05 01:12:28 [scrapy.core.engine] INFO: Closing spider (finished)
2017-08-05 01:12:28 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 435,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader / response_bytes'：9282，'downloader / response_count'：2，'downloader / response_status_count / 200'：1，'downloader / response_status_count / 301'：1，'finish_reason'：'finished'，'finish_time'：datetime . datetime（2017,8,4,19,42,28,837000），'log_count / DEBUG'：3，'log_count / ERROR'：1，'log_count / INFO'：7，'response_received_count'：1，'scheduler / dequeued'：2，'scheduler / dequeued / memory'：2，'scheduler / enqueued'：2，'scheduler / enqueued / memory'：2，'spider_exceptions / NotImplementedError'：1，'start_time'：datetime.datetime（2017 ，8,4,19,42,25,976000）} 2017-08-05 01:12:28 [scrapy.core.engine]信息：蜘蛛关闭（完成）
1 回答
在实现parse_item函数时，Scrapy正在寻找解析函数 . 将parse_item更改为parse可能有效，或者您可以覆盖parse函数 .
here的另一个解决方案是使用CrawlSpider