我正在尝试使用Scrapy和XPath选择器来抓取网页 . 我已经使用chrome测试了我的XPath选择器 . 看来我的蜘蛛爬行零页并刮掉0个项目 . 我该怎么做才能纠正它?我从抓取中获得以下输出:
$ scrapy crawl stack
2015-08-24 21:11:55 [scrapy] INFO: Scrapy 1.0.3 started (bot: stack)
2015-08-24 21:11:55 [scrapy] INFO: Optional features available: ssl, http11
2015-08-24 21:11:55 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'st
ack.spiders', 'SPIDER_MODULES': ['stack.spiders'], 'BOT_NAME': 'stack'}
2015-08-24 21:11:56 [scrapy] INFO: Enabled extensions: CloseSpider, TelnetConsole, LogStats, CoreStats, SpiderState
2015-08-24 21:11:56 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2015-08-24 21:11:56 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2015-08-24 21:11:56 [scrapy] INFO: Enabled item pipelines:
2015-08-24 21:11:56 [scrapy] INFO: Spider opened
2015-08-24 21:11:56 [scrapy] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2015-08-24 21:11:56 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023
2015-08-24 21:11:56 [scrapy] DEBUG: Crawled (200) <GET http://www.cofman.com/search.php?country=DK#areaid=100001&areatxt=Danmark&country=DK&zoom=6&startDate=2015-08-29&endDate=2015-09-05&fuzzy=false> (referer: None)
2015-08-24 21:11:56 [scrapy] DEBUG: Scraped from <200 http://www.cofman.com/search.php?country=DK>
{'by': [], 'husnr': [], 'periode': [], 'pris': []}
2015-08-24 21:11:56 [scrapy] INFO: Closing spider (finished)
2015-08-24 21:11:56 [scrapy] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 233,
'downloader/request_count': 1,
'downloader/request_method_count/GET': 1,
'downloader/response_bytes': 6059,
'downloader/response_count': 1,
'downloader/response_status_count/200': 1,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2015, 8, 24, 19, 11, 56, 875000),
'item_scraped_count': 1,
'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(2015, 8, 24, 19, 11, 56, 390000)}
2015-08-24 21:11:56 [scrapy] INFO: Spider closed (finished)
这是我的蜘蛛:
from scrapy import Spider
from scrapy.selector import Selector
from stack.items import StackItem
class StackSpider(Spider):
name = "stack"
allowed_domains = ["cofman.com"]
start_urls = [
"http://www.cofman.com/search.php?country=DK#areaid=100001&areatxt=Danmark&country=DK&zoom=6&startDate=2015-08-29&endDate=2015-09-05&fuzzy=false",
]
def parse(self, response):
questions = Selector(response).xpath('//*[@id="content"]/div[4]')
for question in questions:
item = StackItem()
item['husnr'] = question.xpath(
'//*[@id="resultListning"]/div/div/div[1]/a/small').extract()
item['pris'] = question.xpath(
'//*[@id="resultListning"]/div/div/div[5]/div/div[1]//*/span[@class="formatted_price"]').extract()
item['by'] = question.xpath(
'//*[@id="resultListning"]/div/div/div[1]/a/text()').extract()
item['periode'] = question.xpath(
'//*[@id="mapNavigation"]/table/tbody/tr/td[1]/div/text()').extract()
yield item
最后我的items.py:
from scrapy.item import Item, Field
class StackItem(Item):
husnr = Field()
pris = Field()
by = Field()
periode = Field()
1 回答
Scrapy工作正常 . 但是,您尝试抓取的页面通过Javascript获取其内容 . Scrapy永远不会得到你想要的内容 .
您需要找出它从哪里获取数据并从该源获取数据,或者您需要使用任何渲染JS的方法 .