使用scrapy无法抓取数据

Question

代码如下：

from scrapy.spiders import CrawlSpider

class douban(CrawlSpider):
    name = 'douban'

    start_urls = ['https://movie.douban.com/chart']

    def parser(self,reponse):
        print reponse.body

main函数代码

from scrapy import cmdline
cmdline.execute('scrapy crawl douban'.split())

信息如下：

2017-08-18 00:08:07 [scrapy.utils.log] INFO: Scrapy 1.4.0 started (bot: douban)
2017-08-18 00:08:07 [scrapy.utils.log] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'douban.spiders', 'SPIDER_MODULES': ['douban.spiders'], 'BOT_NAME': 'douban'}
2017-08-18 00:08:07 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.logstats.LogStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.corestats.CoreStats']
2017-08-18 00:08:09 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
 'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
 'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
 'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
 'scrapy.downloadermiddlewares.retry.RetryMiddleware',
 'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
 'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
 'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
 'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
 'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
 'scrapy.downloadermiddlewares.stats.DownloaderStats']
2017-08-18 00:08:09 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
 'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
 'scrapy.spidermiddlewares.referer.RefererMiddleware',
 'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
 'scrapy.spidermiddlewares.depth.DepthMiddleware']
2017-08-18 00:08:09 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2017-08-18 00:08:09 [scrapy.core.engine] INFO: Spider opened
2017-08-18 00:08:10 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2017-08-18 00:08:10 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6023
2017-08-18 00:08:10 [scrapy.core.engine] DEBUG: Crawled (403) <GET https://movie.douban.com/chart> (referer: None)
2017-08-18 00:08:10 [scrapy.spidermiddlewares.httperror] INFO: Ignoring response <403 https://movie.douban.com/chart>: HTTP status code is not handled or not allowed
2017-08-18 00:08:10 [scrapy.core.engine] INFO: Closing spider (finished)
2017-08-18 00:08:10 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 219,
 'downloader/request_count': 1,
 'downloader/request_method_count/GET': 1,
 'downloader/response_bytes': 248,
 'downloader/response_count': 1,
 'downloader/response_status_count/403': 1,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2017, 8, 17, 16, 8, 10, 918000),
 'httperror/response_ignored_count': 1,
 'httperror/response_ignored_status_count/403': 1,
 'log_count/DEBUG': 2,
 'log_count/INFO': 8,
 'response_received_count': 1,
 'scheduler/dequeued': 1,
 'scheduler/dequeued/memory': 1,
 'scheduler/enqueued': 1,
 'scheduler/enqueued/memory': 1,
 'start_time': datetime.datetime(2017, 8, 17, 16, 8, 10, 118000)}
2017-08-18 00:08:10 [scrapy.core.engine] INFO: Spider closed (finished)

Answer 1

方法名写错了吧，应该是parse 而不是 parser，scrapy文档

Answer 2

这是缺少user_agent
在setting.py里加入

USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_3) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.54 Safari/536.5'

Answer 3

具体可以看看 你的scrapy请求http协议request各项参数值
了解基本的HTTP1.1协议，最大化模拟游览器请求
需要登录的添加 登录cookies值！