Scrapy：0页被抓（在scrapy外壳中工作，但没有scrapy抓取蜘蛛命令）

我在scrapy上遇到了一些问题。它没有返回任何结果。我试图将下面的蜘蛛复制并粘贴到scrapy外壳中，它确实有效。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。Scrapy：0页被抓（在scrapy外壳中工作，但没有scrapy抓取蜘蛛命令）

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

我看到的消息是... scrapy爬行rxomega

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)

来源

2014-02-17 imagineerThat

的genspider功能创建一个CrawlSpider和parse_item，但教程使用蜘蛛，并解析。两者都是0.22版本。更改为蜘蛛和解析上述代码，它的工作原理。

来源

2014-02-17 01:55:34 imagineerThat

嗨，你介意给予帮助？ http://stackoverflow.com/questions/31630771/scrapy-linkextractor-duplicating – yukclam9

，如果你想使用CrawlerSpider从该网站刮痧项目的网页，你就必须改变以下两种：

allowed_domains = ['www.iherb.com']排除HTTP：//前缀
rules = ( Rule(SgmlLinkExtractor(allow=r'Items'), callback='parse_item', follow=True), )

公开规则并删除帖子/标志

来源

2014-02-17 02:00:22

更改参数CrawlSpider在RxomegaSpider类到scrapy.Spider和更改函数名称从parse_item到parse。希望它有帮助

来源

2014-10-27 06:54:03

Scrapy：0页被抓（在scrapy外壳中工作，但没有scrapy抓取蜘蛛命令）

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