{"id":205461,"date":"2025-05-29T08:48:13","date_gmt":"2025-05-29T00:48:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205461\/"},"modified":"2025-05-29T08:48:13","modified_gmt":"2025-05-29T00:48:13","slug":"scrapy-%e7%ae%a1%e9%81%93%e6%95%b0%e6%8d%ae%e5%ba%93%e5%ad%98%e5%82%a8%e6%8a%a5%e9%94%99%ef%bc%9a%e5%87%bd%e6%95%b0%e5%90%8d%e7%a7%b0%e6%8b%bc%e5%86%99%e9%94%99%e8%af%af%e5%af%bc%e8%87%b4%e8%bf%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205461\/","title":{"rendered":"Scrapy \u7ba1\u9053\u6570\u636e\u5e93\u5b58\u50a8\u62a5\u9519\uff1a\u51fd\u6570\u540d\u79f0\u62fc\u5199\u9519\u8bef\u5bfc\u81f4\u8fde\u63a5\u95ee\u9898\uff1f"},"content":{"rendered":"

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

Scrapy \u7ba1\u9053\u6570\u636e\u5e93\u5b58\u50a8\u62a5\u9519\uff1a\u51fd\u6570\u540d\u79f0\u62fc\u5199\u9519\u8bef\u5bfc\u81f4\u8fde\u63a5\u95ee\u9898\uff1f<\/h1>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

<\/p>\n

scrapy \u7ba1\u9053\u6570\u636e\u5e93\u5b58\u50a8\u62a5\u9519\u5206\u6790<\/strong><\/p>\n

\u95ee\u9898\u63cf\u8ff0\uff1a<\/strong><\/p>\n

\u5728\u4f7f\u7528 scrapy \u7684\u7ba1\u9053\u5c06\u6570\u636e\u5b58\u50a8\u5230\u6570\u636e\u5e93\u65f6\u9047\u5230\u4e86\u9519\u8bef\uff0c\u731c\u6d4b\u662f\u6570\u636e\u5e93\u8fde\u63a5\u51fa\u73b0\u4e86\u95ee\u9898\u3002<\/p>\n

\u5206\u6790\uff1a<\/strong><\/p>\n

\u63d0\u4f9b\u7684\u4ee3\u7801\u4e2d\uff0c\u786e\u5b9e\u5b58\u5728\u4e00\u4e2a\u540d\u79f0\u62fc\u5199\u9519\u8bef\uff1a<\/p>\n

def opens_spider(self, spider):<\/pre>\n
\u6b63\u786e\u7684\u51fd\u6570\u540d\u79f0\u5e94\u8be5\u662f open_spider\uff08\u5e26 s\uff09\u3002scrapy \u4e2d\u7684\u7ba1\u9053\u51fd\u6570\u540d\u79f0\u662f\u56fa\u5b9a\u7684\uff0c\u56e0\u6b64\u9700\u8981\u4ed4\u7ec6\u68c0\u67e5\u662f\u5426\u62fc\u5199\u6b63\u786e\u3002<\/p>\n
\u4fee\u6539\u540e\u7684\u4ee3\u7801\uff1a<\/strong><\/p>\n
class mysqlPipeline(object):\n    conn = None\n    cursor = None\n\n    # \u8fde\u63a5\u6570\u636e\u5e93\n    def open_spider(self, spider):\n        self.conn = pymysql.Connect(host='127.0.0.1', port=3306, user='root', password='123456', db='test',charset='utf8')<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Scrapy \u7ba1\u9053\u6570\u636e\u5e93\u5b58\u50a8\u62a5\u9519...<\/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-205461","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205461","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=205461"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205461\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}