我和斯皮奇有点问题。它不会返回任何结果。我试着把下面的蜘蛛复制粘贴到这个破壳里，它确实起作用了。真的不知道问题是什么，但是当我用“scrapy crawl rxomega”运行它时，它不起作用。
from scrapy.selector import Selector
from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor
from scrapy.contrib.spiders import CrawlSpider, Rule
from iherb.items import IherbItem
class RxomegaSpider(CrawlSpider):
name = 'rxomega'
allowed_domains = ['http://www.iherb.com/']
start_urls = ['http://www.iherb.com/product-reviews/Natural-Factors-RxOmega-3-Factors-EPA-400-mg-DHA-200-mg-240-Softgels/4251/',
'http://www.iherb.com/product-reviews/Now-Foods-Omega-3-Cardiovascular-Support-200-Softgels/323/']
#rules = (
# Rule(SgmlLinkExtractor(allow=r'Items/'), callback='parse_item', follow=True),
#)
def parse_item(self, response):
print('hello')
sel = Selector(response)
sites = sel.xpath('//*[@id="mainContent"]/div[3]/div[2]/div')
items = []
for site in sites:
i = IherbItem()
i['review'] = site.xpath('div[5]/p/text()').extract()
items.append(i)
return items
我看到的信息是。。。
抓挠爬行
2014-02-16 17:00:55-0800 [scrapy] INFO: Scrapy 0.22.0 started (bot: iherb)
2014-02-16 17:00:55-0800 [scrapy] INFO: Optional features available: ssl, http11, django
2014-02-16 17:00:55-0800 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'iherb.spiders', 'SPIDER_MODULES': ['iherb.spiders'], 'BOT_NAME': 'iherb'}
2014-02-16 17:00:55-0800 [scrapy] INFO: Enabled extensions: LogStats, TelnetConsole, CloseSpider, WebService, CoreStats, SpiderState
2014-02-16 17:00:55-0800 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2014-02-16 17:00:55-0800 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2014-02-16 17:00:55-0800 [scrapy] INFO: Enabled item pipelines:
2014-02-16 17:00:55-0800 [rxomega] INFO: Spider opened
2014-02-16 17:00:55-0800 [rxomega] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2014-02-16 17:00:55-0800 [scrapy] DEBUG: Telnet console listening on 0.0.0.0:6026
2014-02-16 17:00:55-0800 [scrapy] DEBUG: Web service listening on 0.0.0.0:6083
2014-02-16 17:00:55-0800 [rxomega] DEBUG: Crawled (200) <GET http://www.iherb.com/product-reviews/Natural-Factors-RxOmega-3-Factors-EPA-400-mg-DHA-200-mg-240-Softgels/4251/> (referer: None)
2014-02-16 17:00:56-0800 [rxomega] DEBUG: Crawled (200) <GET http://www.iherb.com/product-reviews/Now-Foods-Omega-3-Cardiovascular-Support-200-Softgels/323/> (referer: None)
2014-02-16 17:00:56-0800 [rxomega] INFO: Closing spider (finished)
2014-02-16 17:00:56-0800 [rxomega] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 588,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader/response_bytes': 37790,
'downloader/response_count': 2,
'downloader/response_status_count/200': 2,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2014, 2, 17, 1, 0, 56, 22065),
'log_count/DEBUG': 4,
'log_count/INFO': 7,
'response_received_count': 2,
'scheduler/dequeued': 2,
'scheduler/dequeued/memory': 2,
'scheduler/enqueued': 2,
'scheduler/enqueued/memory': 2,
'start_time': datetime.datetime(2014, 2, 17, 1, 0, 55, 256404)}
2014-02-16 17:00:56-0800 [rxomega] INFO: Spider closed (finished)
最佳答案
genspider特性创建一个crawpsider，并解析项，但是本教程使用Spider，并解析。两个版本都是0.22。更改为Spider并解析上面的代码，它就可以工作了。