用Scrapy爬取网站时总获取不到源代码的解决办法

运行scrapy  crawl gupiao，报错如下：

2017-11-06 16:28:19 [scrapy.utils.log] INFO: Scrapy 1.4.0 started (bot: gupiaosp
ider)
2017-11-06 16:28:19 [scrapy.utils.log] INFO: Overridden settings: {'BOT_NAME': '
gupiaospider', 'NEWSPIDER_MODULE': 'gupiaospider.spiders', 'SPIDER_MODULES': ['g
upiaospider.spiders']}
2017-11-06 16:28:19 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.logstats.LogStats']
2017-11-06 16:28:20 [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']
2017-11-06 16:28:20 [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']
2017-11-06 16:28:20 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2017-11-06 16:28:20 [scrapy.core.engine] INFO: Spider opened
2017-11-06 16:28:20 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pag
es/min), scraped 0 items (at 0 items/min)
2017-11-06 16:28:20 [scrapy.extensions.telnet] DEBUG: Telnet console listening o
n 127.0.0.1:6023
2017-11-06 16:28:21 [scrapy.core.engine] DEBUG: Crawled (200) <GET http://stock.
10jqka/> (referer: None)

2017-11-06 16:28:21 [scrapy.core.engine] INFO: Closing spider (finished)
2017-11-06 16:28:21 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 217,
 'downloader/request_count': 1,
 'downloader/request_method_count/GET': 1,
 'downloader/response_bytes': 278,
 'downloader/response_count': 1,
 'downloader/response_status_count/200': 1,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2017, 11, 6, 8, 28, 21, 353422),
 'log_count/DEBUG': 2,
 '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(2017, 11, 6, 8, 28, 20, 834393)}
2017-11-06 16:28:21 [scrapy.core.engine] INFO: Spider closed (finished)

 

解决方法：

在settings.py文件中添加请求头：