{"id":720,"date":"2021-01-18T17:15:37","date_gmt":"2021-01-18T09:15:37","guid":{"rendered":"http:\/\/blog.refusea.com\/?p=720"},"modified":"2021-01-18T17:15:37","modified_gmt":"2021-01-18T09:15:37","slug":"java-%e7%a8%8b%e5%ba%8f%e7%8c%bf%e5%ad%a6-python%ef%bc%9a%e7%b1%bb%e6%96%b9%e6%b3%95%e5%92%8c%e9%9d%99%e6%80%81%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/refusea.com\/?p=720","title":{"rendered":"Java \u7a0b\u5e8f\u733f\u5b66 python\uff1a\u7c7b\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5"},"content":{"rendered":"<h2>\u7c7b\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5<\/h2>\n<p>\u5728 Java \u91cc\uff0c\u7c7b\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5\u662f\u4e00\u4e2a\u610f\u601d\uff0c\u5c31\u662f\u7528 <code>static<\/code> \u4fee\u9970\u7684\u65b9\u6cd5<\/p>\n<p>python \u4e5f\u6709\u9759\u6001\u65b9\u6cd5\u7684\u6982\u5ff5\uff0c\u540c\u65f6\u8fd8\u6709\u4e2a\u548c\u9759\u6001\u65b9\u6cd5\u5f88\u76f8\u4f3c\u7684\u7c7b\u65b9\u6cd5\uff0c\u8fd9\u5c31\u8ba9\u4eba\u6709\u70b9\u5934\u5927\u4e86\uff0c\u4ed6\u4eec\u7684\u533a\u522b\u662f\u4ec0\u4e48\u5462\uff1f\u5404\u81ea\u9002\u5408\u600e\u6837\u7684\u573a\u666f\u5462\uff1f<\/p>\n<h2>\u533a\u522b<\/h2>\n<p>\u5148\u770b\u4e0b\u4ee3\u7801\u5427<\/p>\n<pre><code class=\"language-python\">class Test(object):\n\n  id = 100\n\n  # \u9759\u6001\u65b9\u6cd5\n  @staticmethod\n  def static_mothed():\n    pass\n\n  # \u7c7b\u65b9\u6cd5\n  @classmethod\n  def class_mothed(cls):\n    pass<\/code><\/pre>\n<p>\u4ec5\u4ec5\u4ece\u4ee3\u7801\u4e0a\u770b\uff0c\u533a\u522b\u5c31\u662f\u53c2\u6570\u7684\u4e0d\u540c\uff0c\u7c7b\u65b9\u6cd5\u6bd4\u9759\u6001\u65b9\u6cd5\u591a\u4e86\u4e2a <code>cls<\/code> \u7684\u53c2\u6570\uff0c\u8be5\u53c2\u6570\u8868\u793a\u5f53\u524d\u7c7b\u5373 <code>Test<\/code><\/p>\n<p>\u90a3\u4e48\uff0c\u8fd9\u4e2a <code>cls<\/code> \u53c2\u6570\u80fd\u5e72\u5565\u5462\uff1f\u5b83\u53ef\u4ee5<\/p>\n<ul>\n<li>\u8c03\u7528\u7c7b\u7684\u5b9e\u4f8b\u5316\u65b9\u6cd5\uff0c\u5373 <code>test = cls()<\/code><\/li>\n<li>\u83b7\u53d6\u7c7b\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\uff0c\u5373 <code>x = cls.id<\/code><\/li>\n<li>\u8c03\u7528\u7c7b\u7684\u9759\u6001\u65b9\u6cd5<\/li>\n<\/ul>\n<p>\u9759\u6001\u65b9\u6cd5\u6ca1\u6709 <code>cls<\/code> \u53c2\u6570\uff0c\u5c31\u4e0d\u80fd\u505a\u5230\u4ee5\u4e0a\u529f\u80fd\u4e86\u5417\uff1f\u5b9e\u9645\u4e0a\u6ca1\u6709 <code>cls<\/code> \u4e5f\u53ef\u4ee5\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u7528\u7c7b\u540d\uff0c\u5982\u4e0b<\/p>\n<ul>\n<li>\u76f4\u63a5\u7528\u7c7b\u540d\u6765\u8c03\u7528\u5b9e\u4f8b\u5316\u65b9\u6cd5\uff0c<code>test = Test()<\/code><\/li>\n<li>\u76f4\u63a5\u7528\u7c7b\u540d\u6765\u8c03\u7528\u7c7b\u5c5e\u6027\uff0c\u6216\u65b9\u6cd5\uff0c<code>x = Test.id<\/code><\/li>\n<\/ul>\n<p>\u90a3\u4e48\u533a\u522b\u5728\u54ea\u5462\uff1f<\/p>\n<h2>DRY \u539f\u5219<\/h2>\n<p>\u8f6f\u4ef6\u5f00\u53d1\u6709\u4e2a DRY \u539f\u5219\uff0c\u5373 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Don&#039;t_repeat_yourself\" title=\"Don&#039;t repeat yourself\">Don&#8217;t repeat yourself<\/a><\/p>\n<p>\u57fa\u4e8e\u8be5\u539f\u5219\uff0c\u5982\u679c\u6211\u4eec\u5728\u9759\u6001\u65b9\u6cd5\u91cc\u9700\u8981\u7528\u5230\u7c7b\u7684\u5b9e\u4f8b\u5316\u6216\u8005\u8bbf\u95ee\u5176\u7c7b\u65b9\u6cd5\u3001\u7c7b\u5c5e\u6027\uff0c\u7528 <code>cls<\/code> \u53c2\u6570\u6bd4\u76f4\u63a5\u7528\u7c7b\u540d\u8981\u66f4\u4f18<\/p>\n<p>\u6bd4\u5982\u8bf4\uff0c\u5982\u679c\u4f60\u6539\u4e86\u7c7b\u540d\uff0c\u7528 <code>cls<\/code> \u53c2\u6570\u65f6\uff0c\u65e0\u9700\u4fee\u6539\u6e90\u7801\uff0c\u5982\u679c\u4f60\u7528\u7684\u662f\u7c7b\u540d\uff0c\u90a3\u4f60\u5c06\u4e0d\u5f97\u4e0d\u4e00\u4e2a\u4e00\u4e2a\u4fee\u6539\u5bf9\u5e94\u7684\u7c7b\u540d<\/p>\n<h2>\u4f7f\u7528\u573a\u666f<\/h2>\n<p>\u5982\u679c\u4f60\u7684\u65b9\u6cd5\u5b8c\u5168\u4e0d\u9700\u8981\u7528\u5230\u7c7b\u5b9e\u4f8b\u5316\uff0c\u6216\u8005\u7c7b\u5c5e\u6027\u3001\u7c7b\u65b9\u6cd5\uff0c\u90a3\u5c31\u7528\u9759\u6001\u65b9\u6cd5\u5427\uff0c\u5c31\u7c7b\u4f3c Java \u7684\u5de5\u5177\u7c7b XxxUtils<\/p>\n<p>\u5426\u5219\uff0c\u7528\u7c7b\u65b9\u6cd5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7c7b\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5 \u5728 Java \u91cc\uff0c\u7c7b\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5\u662f\u4e00\u4e2a\u610f\u601d\uff0c\u5c31\u662f\u7528 static \u4fee\u9970\u7684\u65b9\u6cd5 python [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[],"class_list":["post-720","post","type-post","status-publish","format-standard","hentry","category-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - 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