{"id":204298,"date":"2025-05-29T11:10:17","date_gmt":"2025-05-29T03:10:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204298\/"},"modified":"2025-05-29T11:10:17","modified_gmt":"2025-05-29T03:10:17","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8crawlspider%e4%bf%ae%e6%94%b9%e8%a7%a3%e6%9e%90%e9%93%be%e6%8e%a5%e5%b9%b6%e6%b7%bb%e5%8a%a0%e5%8f%82%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204298\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Crawlspider\u4fee\u6539\u89e3\u6790\u94fe\u63a5\u5e76\u6dfb\u52a0\u53c2\u6570\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4f7f\u7528Crawlspider\u4fee\u6539\u89e3\u6790\u94fe\u63a5\u5e76\u6dfb\u52a0\u53c2\u6570\uff1f<\/h1>\n<\/p>\n

<\/p>\n

crawlspider\u4fee\u6539rule\u89e3\u6790\u8fc7\u7684\u94fe\u63a5<\/strong><\/p>\n

\u5728\u4f7f\u7528scrapy\u7684crawlspider\u65f6\uff0c\u6709\u65f6\u9700\u8981\u5bf9rule\u89e3\u6790\u8fc7\u7684\u94fe\u63a5\u8fdb\u884c\u4fee\u6539\u3002\u4f8b\u5982\uff0c\u9700\u8981\u628a\u94fe\u63a5\u683c\u5f0f\u5316\u6216\u62fc\u63a5\u4e0a\u67d0\u4e2a\u53c2\u6570\u3002<\/p>\n

\u8fd9\u4e2a\u95ee\u9898\u4e2d\u7ed9\u51fa\u4e86\u4e00\u4e2a\u793a\u4f8b\uff0c\u5176\u4e2d\u89c4\u5219\u5b9a\u4e49\u4e86\u5982\u4f55\u4ece\u4e00\u4e2a\u7279\u5b9a\u7f51\u7ad9\u6293\u53d6\u65b0\u95fb\u94fe\u63a5\u3002\u4f46\u662f\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u89e3\u6790\u540e\u7684\u65b0\u95fb\u94fe\u63a5\u8fdb\u4e00\u6b65\u5904\u7406\uff0c\u5177\u4f53\u6765\u8bf4\u662f\u5c06\u94fe\u63a5\u62fc\u63a5\u4e0a\u53c2\u6570\u3002<\/p>\n

\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e2a\u9700\u6c42\uff0c\u53ef\u4ee5\u5728downloadermiddleware\u91cc\u5b9a\u4e49process_requests\u65b9\u6cd5\u3002\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u4f1a\u904d\u5386\u6240\u6709\u8bf7\u6c42\u7684\u94fe\u63a5\uff0c\u5e76\u5339\u914d\u51fa\u9700\u8981\u5904\u7406\u7684\u8be6\u60c5\u9875url\u3002\u7136\u540e\uff0c\u6211\u4eec\u5c06\u8be6\u60c5\u9875url\u62fc\u63a5\u4e0a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684response\u5bf9\u8c61\u3002<\/p>\n

\u4ee5\u4e0b\u662fprocess_requests\u65b9\u6cd5\u793a\u4f8b\uff1a<\/p>\n

def process_requests(self, request, spider):\n    # \u5339\u914d\u51fa\u9700\u8981\u5904\u7406\u7684\u8be6\u60c5\u9875URL\n    url_pattern = r'\/a\/\\d+.html'\n    if re.match(url_pattern, request.url):\n        # \u62fc\u63a5\u53c2\u6570\n        new_url = request.url + '&param=value'\n        # \u8fd4\u56de\u65b0\u7684Response\u5bf9\u8c61\n        return scrapy.Request(new_url, callback=spider.parse_item)<\/pre>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528Crawlspider\u4fee\u6539\u89e3\u6790\u94fe\u63a5\u5e76\u6dfb\u52a0\u53c2\u6570\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u4f7f\u7528Crawlspider\u4fee...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204298","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204298"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204298\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}