Scrapy没有返回数据

Question

我是想凑这个页面：

http://www.homeimprovementpages.com.au/connect/hypowerelectrical/service/261890

而且我用这个代码：

import scrapy 


class HipSpider(scrapy.Spider): 
    name = "hip" 
    allowed_domains = ["homeimprovementpages.com.au"] 
    start_urls = [ 
     "http://www.homeimprovementpages.com.au/connect/protecelectricalservices/service/163729", 
    ] 

    def parse(self, response): 
     item = HomeimprovementItem() 
     item['name'] = response.xpath('//h2[@class="media-heading text-strong"]/text()').extract() 
     item['contact'] = response.xpath('//div/span[.="Contact Name:"]/following-sibling::div[1]/text()').extract() 
     item['phone'] = response.xpath('//div/span[.="Phone:"]/following-sibling::div[1]/text()').extract() 
     yield item 

，其结果是：

C:\Python27\homeimprovement>scrapy crawl hip -o h.csv 
2016-04-08 17:49:33 [scrapy] INFO: Scrapy 1.0.5 started (bot: homeimprovement) 
2016-04-08 17:49:33 [scrapy] INFO: Optional features available: ssl, http11 
2016-04-08 17:49:33 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'ho 
meimprovement.spiders', 'FEED_FORMAT': 'csv', 'SPIDER_MODULES': ['homeimprovemen 
t.spiders'], 'FEED_URI': 'h.csv', 'BOT_NAME': 'homeimprovement'} 
2016-04-08 17:49:34 [scrapy] INFO: Enabled extensions: CloseSpider, FeedExporter 
, TelnetConsole, LogStats, CoreStats, SpiderState 
2016-04-08 17:49:34 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddl 
eware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultH 
eadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMidd 
leware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats 
2016-04-08 17:49:34 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddlewa 
re, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware 
2016-04-08 17:49:34 [scrapy] INFO: Enabled item pipelines: 
2016-04-08 17:49:34 [scrapy] INFO: Spider opened 
2016-04-08 17:49:34 [scrapy] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 i 
tems (at 0 items/min) 
2016-04-08 17:49:34 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023 
2016-04-08 17:49:34 [scrapy] DEBUG: Crawled (403) <GET http://www.homeimprovemen 
tpages.com.au/connect/protecelectricalservices/service/163729> (referer: None) 
2016-04-08 17:49:34 [scrapy] DEBUG: Ignoring response <403 http://www.homeimprov 
ementpages.com.au/connect/protecelectricalservices/service/163729>: HTTP status 
code is not handled or not allowed 
2016-04-08 17:49:34 [scrapy] INFO: Closing spider (finished) 
2016-04-08 17:49:34 [scrapy] INFO: Dumping Scrapy stats: 
{'downloader/request_bytes': 276, 
'downloader/request_count': 1, 
'downloader/request_method_count/GET': 1, 
'downloader/response_bytes': 2488, 
'downloader/response_count': 1, 
'downloader/response_status_count/403': 1, 
'finish_reason': 'finished', 
'finish_time': datetime.datetime(2016, 4, 8, 12, 19, 34, 946000), 
'log_count/DEBUG': 3, 
'log_count/INFO': 7, 
'response_received_count': 1, 
'scheduler/dequeued': 1, 
'scheduler/dequeued/memory': 1, 
'scheduler/enqueued': 1, 
'scheduler/enqueued/memory': 1, 
'start_time': datetime.datetime(2016, 4, 8, 12, 19, 34, 537000)} 
2016-04-08 17:49:34 [scrapy] INFO: Spider closed (finished) 

而且在蜘蛛文件夹中创建了一个csv并且它是空的。我不明白哪里出了问题。我希望有人能指导我。

Answer 1

发生这种情况是由于在日志中可以看到禁止的错误（403）。 在请求这些页面时，您将不得不添加自定义用户代理标题。

A library that lets you add fake user agent headers

Answer 2

http://www.homeimprovementpages.com.au/connect/hypowerelectrical/service/261890该页面有一个保护。

所有选择器都返回一个空数组。

In [1]: response.xpath('//h2[@class="media-heading text-strong"]/text()') 
Out[1]: [] 

In [2]: response.xpath('//h2[@class="media-heading text-strong"]/text()') 
Out[2]: [] 

In [3]: response.xpath('//div/span[.="Contact Name:"]/following-sibling::div[1]/text()') 
Out[3]: [] 

In [4]: response.xpath('//div/span[.="Phone:"]/following-sibling::div[1]/text()') 
Out[4]: []