{"id":847,"date":"2023-10-20T08:43:41","date_gmt":"2023-10-28T07:54:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/spring%e7%9a%84postconstruct%e5%92%8cpredestroy\/"},"modified":"2025-08-03T12:35:33","modified_gmt":"2025-08-03T04:35:33","slug":"spring%e7%9a%84postconstruct%e5%92%8cpredestroy","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/spring%e7%9a%84postconstruct%e5%92%8cpredestroy\/","title":{"rendered":"Spring\u6846\u67b6\u751f\u547d\u5468\u671f\u6ce8\u89e3\u8be6\u89e3\uff1a@PostConstruct\u4e0e@PreDestroy\u4f7f\u7528\u6307\u5357"},"content":{"rendered":"<p>\u5f53\u6211\u4eec\u4f7f\u7528\u4f9d\u8d56\u6ce8\u5165\u914d\u7f6eSpring Beans\u65f6\uff0c\u6709\u65f6\u6211\u4eec\u5e0c\u671b\u5728\u6211\u4eec\u7684Bean\u5f00\u59cb\u4e3a\u5ba2\u6237\u7aef\u8bf7\u6c42\u63d0\u4f9b\u670d\u52a1\u4e4b\u524d\u786e\u4fdd\u4e00\u5207\u90fd\u521d\u59cb\u5316\u6b63\u786e\u3002\u540c\u6837\u5730\uff0c\u5f53\u4e0a\u4e0b\u6587\u88ab\u9500\u6bc1\u65f6\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5173\u95ed\u4e00\u4e9b\u7531Spring Bean\u4f7f\u7528\u7684\u8d44\u6e90\u3002<\/p>\n<h2>Spring\u7684@PostConstruct<\/h2>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528@PostConstruct\u6ce8\u89e3\u6765\u6807\u6ce8\u4e00\u4e2aSpring Bean\u7684\u65b9\u6cd5\u65f6\uff0c\u8be5\u65b9\u6cd5\u4f1a\u5728Spring Bean\u521d\u59cb\u5316\u4e4b\u540e\u6267\u884c\u3002\u6bcf\u4e2a\u7c7b\u4e2d\u53ea\u80fd\u6709\u4e00\u4e2a\u65b9\u6cd5\u4f7f\u7528@PostConstruct\u6ce8\u89e3\u3002\u8fd9\u4e2a\u6ce8\u89e3\u662fCommon Annotations API\u7684\u4e00\u90e8\u5206\uff0c\u4e5f\u5c5e\u4e8eJDK\u6a21\u5757javax.annotation-api\u3002\u56e0\u6b64\uff0c\u5982\u679c\u60a8\u5728Java 9\u6216\u66f4\u9ad8\u7248\u672c\u4e2d\u4f7f\u7528\u8fd9\u4e2a\u6ce8\u89e3\uff0c\u5fc5\u987b\u663e\u5f0f\u5730\u5c06\u76f8\u5e94\u7684jar\u6587\u4ef6\u6dfb\u52a0\u5230\u9879\u76ee\u4e2d\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662fMaven\uff0c\u5219\u5e94\u8be5\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8d56\u9879\uff1a<\/p>\n<pre class=\"post-pre\"><code>&lt;dependency&gt;\r\n\t&lt;groupId&gt;javax.annotation&lt;\/groupId&gt;\r\n\t&lt;artifactId&gt;javax.annotation-api&lt;\/artifactId&gt;\r\n\t&lt;version&gt;1.3.2&lt;\/version&gt;\r\n&lt;\/dependency&gt;\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662fJava 8\u6216\u66f4\u4f4e\u7248\u672c\uff0c\u5219\u65e0\u9700\u6dfb\u52a0\u4e0a\u8ff0\u4f9d\u8d56\u9879\u3002<\/p>\n<h2>Spring\u7684@PreDestroy<\/h2>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528@PreDestroy\u6ce8\u89e3\u6765\u6807\u6ce8\u4e00\u4e2aSpring Bean\u7684\u65b9\u6cd5\u65f6\uff0c\u5f53bean\u5b9e\u4f8b\u4ece\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u4e2d\u88ab\u79fb\u9664\u65f6\uff0c\u8be5\u65b9\u6cd5\u5c06\u88ab\u8c03\u7528\u3002\u7406\u89e3\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981\uff1a\u5982\u679c\u60a8\u7684Spring Bean\u4f5c\u7528\u57df\u4e3a&#8221;prototype&#8221;\uff0c\u90a3\u4e48\u5b83\u5e76\u4e0d\u5b8c\u5168\u7531Spring\u5bb9\u5668\u7ba1\u7406\uff0c@PreDestroy\u65b9\u6cd5\u5c06\u4e0d\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528\u3002\u6b64\u5916\uff0c\u5982\u679cBean\u4e2d\u5b58\u5728\u540d\u4e3ashutdown\u6216close\u7684\u65b9\u6cd5\uff0cSpring\u5bb9\u5668\u4f1a\u5728\u9500\u6bc1bean\u65f6\u5c1d\u8bd5\u81ea\u52a8\u5c06\u5b83\u4eec\u914d\u7f6e\u4e3a\u56de\u8c03\u65b9\u6cd5\u3002<\/p>\n<h2>Spring @PostConstruct\u548c@PreDestroy\u793a\u4f8b<\/h2>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5305\u542b@PostConstruct\u548c@PreDestroy\u65b9\u6cd5\u7684\u7b80\u5355Spring Bean\u793a\u4f8b\uff1a<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.spring;\r\n\r\nimport javax.annotation.PostConstruct;\r\nimport javax.annotation.PreDestroy;\r\n\r\npublic class MyBean {\r\n\r\n\tpublic MyBean() {\r\n\t\tSystem.out.println(\"MyBean instance created\");\r\n\t}\r\n\r\n\t@PostConstruct\r\n\tprivate void init() {\r\n\t\tSystem.out.println(\"Verifying Resources\");\r\n\t}\r\n\r\n\t@PreDestroy\r\n\tprivate void shutdown() {\r\n\t\tSystem.out.println(\"Shutdown All Resources\");\r\n\t}\r\n\r\n\tpublic void close() {\r\n\t\tSystem.out.println(\"Closing All Resources\");\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u6211\u8fd8\u5b9a\u4e49\u4e86\u4e00\u4e2aclose\u65b9\u6cd5\uff0c\u7528\u4ee5\u9a8c\u8bc1\u5728bean\u9500\u6bc1\u65f6\u8be5\u65b9\u6cd5\u662f\u5426\u4f1a\u88ab\u8c03\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684Spring\u914d\u7f6e\u7c7b\uff1a<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.spring;\r\n\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.context.annotation.Scope;\r\n\r\n@Configuration\r\npublic class MyConfiguration {\r\n\t\r\n    @Bean\r\n    @Scope(value=\"singleton\")\r\n    public MyBean myBean() {\r\n\treturn new MyBean();\r\n    }\r\n\t\r\n}\r\n<\/code><\/pre>\n<p>\u867d\u7136\u6211\u4e0d\u9700\u8981\u663e\u5f0f\u5730\u5c06bean\u6307\u5b9a\u4e3a\u5355\u4f8b\u4f5c\u7528\u57df\uff0c\u4f46\u540e\u7eed\u6211\u4f1a\u5c06\u5176\u503c\u66f4\u6539\u4e3a&#8221;prototype&#8221;\uff0c\u4ee5\u89c2\u5bdf@PostConstruct\u548c@PreDestroy\u65b9\u6cd5\u7684\u884c\u4e3a\u53d8\u5316\u3002\u4ee5\u4e0b\u662f\u4e3b\u7c7b\uff0c\u6211\u5728\u5176\u4e2d\u521b\u5efa\u4e86Spring\u4e0a\u4e0b\u6587\u5e76\u83b7\u53d6\u4e86\u51e0\u4e2aMyBean\u5b9e\u4f8b\uff1a<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.spring;\r\n\r\nimport org.springframework.context.annotation.AnnotationConfigApplicationContext;\r\n\r\npublic class MySpringApp {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tAnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();\r\n\t\tctx.register(MyConfiguration.class);\r\n\t\tctx.refresh();\r\n\r\n\t\tMyBean mb1 = ctx.getBean(MyBean.class);\r\n\t\tSystem.out.println(mb1.hashCode());\r\n\r\n\t\tMyBean mb2 = ctx.getBean(MyBean.class);\r\n\t\tSystem.out.println(mb2.hashCode());\r\n\r\n\t\tctx.close();\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u8fd0\u884c\u4e0a\u8ff0\u4e3b\u7c7b\uff0c\u6211\u4eec\u5c06\u5f97\u5230\u4ee5\u4e0b\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>MyBean instance created\r\nVerifying Resources\r\n1640296160\r\n1640296160\r\nShutdown All Resources\r\nClosing All Resources\r\n<\/code><\/pre>\n<p>\u5728@Bean\u5b9e\u4f8b\u5316\u540e\uff0c@PostConstruct\u65b9\u6cd5\u88ab\u8c03\u7528\u3002\u5f53\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u5173\u95ed\u65f6\uff0cSpring\u4f1a\u540c\u65f6\u8c03\u7528shutdown\u548cclose\u65b9\u6cd5\u3002<\/p>\n<h2>Spring\u5728\u539f\u578b\u4f5c\u7528\u57df\u4e0b\u7684@PostConstruct\u548c@PreDestroy<\/h2>\n<p>\u53ea\u9700\u5c06MyConfiguration\u4e2d\u7684scope\u503c\u66f4\u6539\u4e3aprototype\uff0c\u7136\u540e\u8fd0\u884c\u4e3b\u7c7b\uff0c\u60a8\u5c06\u5f97\u5230\u5982\u4e0b\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>MyBean instance created\r\nVerifying Resources\r\n1640296160\r\nMyBean instance created\r\nVerifying Resources\r\n1863374262\r\n<\/code><\/pre>\n<p>\u663e\u7136\uff0cSpring\u5bb9\u5668\u5728\u6bcf\u6b21\u8bf7\u6c42\u65f6\u90fd\u4f1a\u521d\u59cb\u5316\u65b0\u7684bean\u5b9e\u4f8b\uff0c\u8c03\u7528\u5176@PostConstruct\u65b9\u6cd5\uff0c\u7136\u540e\u5c06\u5176\u4ea4\u7ed9\u5ba2\u6237\u7aef\u3002\u4e4b\u540e\uff0cSpring\u4e0d\u518d\u7ba1\u7406\u8be5bean\u5b9e\u4f8b\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5ba2\u6237\u7aef\u5fc5\u987b\u8d1f\u8d23\u901a\u8fc7\u76f4\u63a5\u8c03\u7528\u76f8\u5e94\u7684\u6e05\u7406\u65b9\u6cd5\u6765\u5b8c\u6210\u6240\u6709\u8d44\u6e90\u7684\u6e05\u7406\u5de5\u4f5c\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>@PostConstruct\u548c@PreDestroy\u662f\u4e0eSpring Bean\u751f\u547d\u5468\u671f\u7ba1\u7406\u76f8\u5173\u7684\u91cd\u8981\u6ce8\u89e3\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u4eec\u6765\u9a8c\u8bc1Bean\u662f\u5426\u88ab\u6b63\u786e\u521d\u59cb\u5316\uff0c\u5e76\u5728Bean\u4eceSpring\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u4e2d\u79fb\u9664\u65f6\u5173\u95ed\u6240\u6709\u8d44\u6e90\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4ece\u6211\u4eec\u7684GitHub\u4ee3\u7801\u4ed3\u5e93\u4e2d\u67e5\u770b\u5b8c\u6574\u7684\u9879\u76ee\u4ee3\u7801\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u6211\u4eec\u4f7f\u7528\u4f9d\u8d56\u6ce8\u5165\u914d\u7f6eSpring Beans\u65f6\uff0c\u6709\u65f6\u6211\u4eec\u5e0c\u671b\u5728\u6211\u4eec\u7684Bean\u5f00\u59cb\u4e3a\u5ba2\u6237\u7aef\u8bf7\u6c42\u63d0\u4f9b\u670d\u52a1\u4e4b\u524d\u786e\u4fdd [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2221,2222,761,1089,1070],"class_list":["post-847","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-postconstruct","tag-predestroy","tag-java","tag-spring","tag-1070"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Spring\u6846\u67b6\u751f\u547d\u5468\u671f\u6ce8\u89e3\u8be6\u89e3\uff1a@PostConstruct\u4e0e@PreDestroy\u4f7f\u7528\u6307\u5357 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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content=\"Spring\u6846\u67b6\u751f\u547d\u5468\u671f\u6ce8\u89e3\u8be6\u89e3\uff1a@PostConstruct\u4e0e@PreDestroy\u4f7f\u7528\u6307\u5357\" \/>\n<meta property=\"og:description\" content=\"\u6df1\u5165\u89e3\u6790Spring\u6846\u67b6\u4e2d\u7684@PostConstruct\u548c@PreDestroy\u6ce8\u89e3\uff0c\u4e86\u89e3\u5b83\u4eec\u5728Bean\u751f\u547d\u5468\u671f\u4e2d\u7684\u4f5c\u7528\u3002\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u8fd9\u4e24\u4e2a\u6ce8\u89e3\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u6267\u884c\u65f6\u673a\u3001\u5e38\u89c1\u5e94\u7528\u573a\u666f\u4ee5\u53ca\u6700\u4f73\u5b9e\u8df5\uff0c\u5e2e\u52a9Java\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7ba1\u7406Spring\u7ec4\u4ef6\u7684\u521d\u59cb\u5316\u548c\u9500\u6bc1\u8fc7\u7a0b\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/spring\u7684postconstruct\u548cpredestroy\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-28T07:54:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-03T04:35:33+00:00\" \/>\n<meta name=\"author\" content=\"\u97f5, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u97f5, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/spring%e7%9a%84postconstruct%e5%92%8cpredestroy\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/spring%e7%9a%84postconstruct%e5%92%8cpredestroy\/\",\"name\":\"Spring\u6846\u67b6\u751f\u547d\u5468\u671f\u6ce8\u89e3\u8be6\u89e3\uff1a@PostConstruct\u4e0e@PreDestroy\u4f7f\u7528\u6307\u5357 - Blog 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