Python 只在给定页面上爬行
我开始学习刮毛,我用谷歌搜索了大约4-5个小时,但找不到任何东西。有人能帮我吗?我有一个电子商务网站。我将只获取产品页面。其他页面没有,将通过另一页。我给了starturls主页,之后我设置了URL allow()和parse and follow true,但我无法管理它来跟踪链接Python 只在给定页面上爬行,python,web-scraping,scrapy,scrapy-spider,Python,Web Scraping,Scrapy,Scrapy Spider,我开始学习刮毛,我用谷歌搜索了大约4-5个小时,但找不到任何东西。有人能帮我吗?我有一个电子商务网站。我将只获取产品页面。其他页面没有,将通过另一页。我给了starturls主页,之后我设置了URL allow()和parse and follow true,但我无法管理它来跟踪链接 scrapy crawl loom 2014-05-14 12:33:20+0000 [scrapy] INFO: Scrapy 0.23.0 started (bot: loom) 2014-05-14 12:3
scrapy crawl loom
2014-05-14 12:33:20+0000 [scrapy] INFO: Scrapy 0.23.0 started (bot: loom)
2014-05-14 12:33:20+0000 [scrapy] INFO: Optional features available: ssl, http11
2014-05-14 12:33:20+0000 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'loom.spiders', 'SPIDER_MODULES': ['loom.spiders'], 'LOG_LEVEL': 'INFO', 'BOT_NAME': 'loom'}
2014-05-14 12:33:20+0000 [scrapy] INFO: Enabled extensions: LogStats, TelnetConsole, CloseSpider, WebService, CoreStats, SpiderState
2014-05-14 12:33:20+0000 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2014-05-14 12:33:20+0000 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2014-05-14 12:33:20+0000 [scrapy] INFO: Enabled item pipelines:
2014-05-14 12:33:20+0000 [loom] INFO: Spider opened
2014-05-14 12:33:20+0000 [loom] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
http://2loom.com
[]
2014-05-14 12:33:20+0000 [loom] INFO: Closing spider (finished)
2014-05-14 12:33:20+0000 [loom] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 208,
'downloader/request_count': 1,
'downloader/request_method_count/GET': 1,
'downloader/response_bytes': 6329,
'downloader/response_count': 1,
'downloader/response_status_count/200': 1,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2014, 5, 14, 12, 33, 20, 824120),
'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(2014, 5, 14, 12, 33, 20, 657838)}
2014-05-14 12:33:20+0000 [loom] INFO: Spider closed (finished)
我的蜘蛛:
from scrapy.spider import Spider
from scrapy.selector import Selector
from scrapy.http import Request
from scrapy.utils.response import get_base_url
from scrapy.contrib.spiders import CrawlSpider, Rule
from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor
class LoomSpider(Spider):
name = "loom"
allowed_domains = ["2loom.com"]
start_urls = [
"http://2loom.com",
]
rules = [Rule(SgmlLinkExtractor(), callback='parse', follow=True)]
def parse(self, response):
print response.url
sel = Selector(response)
print sel.xpath('//h1[@itemprop="name"]/text()').extract()
感谢您所做的一切您需要做一些更改才能使其正常工作:
- 继承自而不是
Spider
- 提供与
parse()不同的
回调
class LoomSpider(CrawlSpider):
name = "loom"
allowed_domains = ["2loom.com"]
start_urls = [
"http://2loom.com",
]
rules = [Rule(SgmlLinkExtractor(), callback='parse_page', follow=True)]
def parse_page(self, response):
print response.url