{"id":789,"date":"2026-08-03T20:55:11","date_gmt":"2026-08-03T12:55:11","guid":{"rendered":"https:\/\/mitongxue.cn\/?p=789"},"modified":"2026-08-03T20:55:11","modified_gmt":"2026-08-03T12:55:11","slug":"ioc-di","status":"publish","type":"post","link":"https:\/\/mitongxue.cn\/index.php\/2026\/08\/03\/ioc-di\/","title":{"rendered":"IOC &amp; DI"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">DI\uff08\u4f9d\u8d56\u6ce8\u5165 Dependency Injection\uff09\u662f\u4e00\u79cd\u5b9e\u73b0\u624b\u6bb5\uff1b <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IOC\uff08\u63a7\u5236\u53cd\u8f6c Inversion of Control\uff09\u662f\u8fbe\u5230\u7684\u8bbe\u8ba1\u601d\u60f3 \/ \u6548\u679c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4f20\u7edf\u6a21\u5f0f\uff1a\u6b63\u65b9\u5411\u63a7\u5236\uff08\u6ca1\u6709 IOC\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9a\u4e49\uff1a<strong>\u5bf9\u8c61\u81ea\u5df1\u8d1f\u8d23\u521b\u5efa\u4f9d\u8d56<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\uff1a<code>ProductService<\/code> \u9700\u8981\u6570\u636e\u5e93\u4f1a\u8bdd <code>AsyncSession<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class ProductService:\n    def __init__(self):\n        # \u274c \u81ea\u5df1\u5185\u90e8\u521b\u5efa\u4f9d\u8d56\n        self.db = get_session_factory()()\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u521b\u5efa <code>ProductService<\/code><\/li>\n\n\n\n<li>Service \u5185\u90e8\u4e3b\u52a8\u65b0\u5efa Session<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a7\u5236\u6743\uff1a<strong>Service \u4e3b\u52a8\u638c\u63a7\u4f9d\u8d56\u7684\u521b\u5efa\u3001\u751f\u547d\u5468\u671f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong>\u63a7\u5236\u6743\u5728\u4e1a\u52a1\u7c7b\u5185\u90e8\uff08\u6b63\u5411\u63a7\u5236\uff09<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f3a\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f3a\u8026\u5408\uff1a<code>ProductService<\/code> \u786c\u7f16\u7801\u4f9d\u8d56\u6784\u9020\u65b9\u5f0f\uff0c\u96be\u4ee5\u5355\u5143\u6d4b\u8bd5\uff1b<\/li>\n\n\n\n<li>\u65e0\u6cd5\u7075\u6d3b\u66ff\u6362\u4f9d\u8d56\uff08\u6d4b\u8bd5\u60f3\u4f20\u5165 mock Session \u5f88\u96be\uff09\uff1b<\/li>\n\n\n\n<li>\u4f9d\u8d56\u7edf\u4e00\u7ba1\u7406\u56f0\u96be\uff0c\u751f\u547d\u5468\u671f\u5206\u6563\uff1b<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001IOC \u63a7\u5236\u53cd\u8f6c\uff08Inversion of Control\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u53cd\u8f6c = \u63a7\u5236\u6743\u8c03\u6362\uff1a<\/strong><strong> \u4e1a\u52a1\u7c7b\u4e0d\u518d\u81ea\u5df1\u521b\u5efa\u4f9d\u8d56\uff0c\u7531\u5916\u90e8\u5bb9\u5668\u521b\u5efa\u597d\u4f9d\u8d56\uff0c\u518d\u4ea4\u7ed9\u4e1a\u52a1\u7c7b\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e1a\u52a1\u7c7b\u53ea\u8d1f\u8d23<strong>\u4f7f\u7528\u4f9d\u8d56<\/strong>\uff0c\u4e0d\u8d1f\u8d23<strong>\u5236\u9020\u4f9d\u8d56<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a7\u5236\u6743\u8f6c\u79fb\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u539f\u6765\uff1aService \u2192 \u521b\u5efa Session<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cd\u8f6c\u540e\uff1a\u5916\u90e8\u5bb9\u5668 \u2192 \u521b\u5efa Session \u2192 \u4f20\u7ed9 Service<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u5c31\u662f<strong>\u63a7\u5236\u53cd\u8f6c IOC<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IOC \u662f\u601d\u60f3\uff0c\u4e0d\u662f\u4ee3\u7801\u3002\u5982\u4f55\u5b9e\u73b0\u8fd9\u79cd\u53cd\u8f6c\uff1f\u6700\u4e3b\u6d41\u65b9\u6848\uff1a<strong>DI \u4f9d\u8d56\u6ce8\u5165<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001DI \u4f9d\u8d56\u6ce8\u5165 Dependency Injection<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u628a\u7c7b\u6240\u9700\u8981\u7684\u5916\u90e8\u4f9d\u8d56\uff0c\u901a\u8fc7\u5916\u90e8\u4f20\u5165\uff0c\u800c\u4e0d\u662f\u5185\u90e8 new\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e09\u79cd\u6ce8\u5165\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6784\u9020\u51fd\u6570\u6ce8\u5165<\/strong><\/li>\n\n\n\n<li>\u5c5e\u6027\u6ce8\u5165<\/li>\n\n\n\n<li>\u65b9\u6cd5\u6ce8\u5165<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DI\uff08\u4f9d\u8d56\u6ce8\u5165 Dependency Inject..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,14],"tags":[],"class_list":["post-789","post","type-post","status-publish","format-standard","hentry","category-front","category-back"],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"author_info":{"info":["\u9648 \u67d0\u4eba"]},"category_info":"<a href=\"https:\/\/mitongxue.cn\/index.php\/category\/front\/\" rel=\"category tag\">\u524d\u7aef<\/a> <a href=\"https:\/\/mitongxue.cn\/index.php\/category\/back\/\" rel=\"category tag\">\u540e\u7aef<\/a>","tag_info":"\u540e\u7aef","comment_count":"0","_links":{"self":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/comments?post=789"}],"version-history":[{"count":2,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/789\/revisions"}],"predecessor-version":[{"id":792,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/789\/revisions\/792"}],"wp:attachment":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/media?parent=789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/categories?post=789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/tags?post=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}