{"id":12200,"date":"2023-11-28T22:46:38","date_gmt":"2023-11-28T14:46:38","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12200"},"modified":"2023-12-11T15:45:26","modified_gmt":"2023-12-11T07:45:26","slug":"spring-zhong-de-dan-libean-de-xian-cheng-an-quan-w-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhong-de-dan-libean-de-xian-cheng-an-quan-w-2\/","title":{"rendered":"Spring\u4e2d\u7684\u5355\u4f8bbean\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u4e86\u89e3\u5417\uff1f"},"content":{"rendered":"<p>\u5728Spring\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSpring\u7ba1\u7406\u7684\u5355\u4f8b\uff08Singleton\uff09Bean\u662f\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\u3002\u8fd9\u662f\u56e0\u4e3aSpring\u7684\u5355\u4f8bBean\u662f\u5728\u5bb9\u5668\u542f\u52a8\u65f6\u521b\u5efa\u7684\uff0c\u5bb9\u5668\u53ea\u521b\u5efa\u4e00\u4e2a\u5b9e\u4f8b\u5e76\u5728\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u4e2d\u5171\u4eab\u8fd9\u4e2a\u5b9e\u4f8b\u3002\u56e0\u6b64\uff0c\u5982\u679c\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u8be5\u5355\u4f8bBean\uff0c\u5e76\u4e14\u8be5Bean\u5305\u542b\u53ef\u53d8\u72b6\u6001\uff0c\u5c31\u53ef\u80fd\u5bfc\u81f4\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002<\/p>\n<p>\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u4e3b\u8981\u6d89\u53ca\u5230\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n<ol>\n<li>\n<strong>\u5b9e\u4f8b\u53d8\u91cf\uff1a<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u5355\u4f8bBean\u5305\u542b\u5b9e\u4f8b\u53d8\u91cf\uff0c\u5e76\u4e14\u8fd9\u4e9b\u53d8\u91cf\u662f\u53ef\u53d8\u7684\uff0c\u90a3\u4e48\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5bf9\u8fd9\u4e9b\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u6027\u6216\u7ade\u6001\u6761\u4ef6\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java\">@Service\npublic class MyService {\n    private int counter = 0;\n\n    public int incrementCounter() {\n        return counter++;\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\uff0c<code>incrementCounter<\/code>\u65b9\u6cd5\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u56e0\u4e3a\u591a\u4e2a\u7ebf\u7a0b\u53ef\u80fd\u540c\u65f6\u8c03\u7528\u8be5\u65b9\u6cd5\u5bfc\u81f4\u8ba1\u6570\u5668\u4e0d\u51c6\u786e\u3002\n<\/li>\n<li>\n<strong>\u4f9d\u8d56\u6ce8\u5165\uff1a<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u5355\u4f8bBean\u4f9d\u8d56\u5176\u4ed6\u5355\u4f8bBean\uff0c\u5e76\u4e14\u8fd9\u4e9bBean\u5305\u542b\u53ef\u53d8\u72b6\u6001\uff0c\u4e5f\u53ef\u80fd\u5bfc\u81f4\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u56e0\u4e3a\u8fd9\u4e9b\u4f9d\u8d56\u5173\u7cfb\u5728\u5bb9\u5668\u521d\u59cb\u5316\u65f6\u5c31\u88ab\u6ce8\u5165\uff0c\u540e\u7eed\u591a\u4e2a\u7ebf\u7a0b\u53ef\u80fd\u5171\u4eab\u8fd9\u4e9b\u4f9d\u8d56Bean\u7684\u72b6\u6001\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java\">@Service\npublic class MyService {\n    @Autowired\n    private AnotherService anotherService;\n\n    public void myMethod() {\n        \/\/ \u4f7f\u7528 anotherService \u7684\u72b6\u6001\n    }\n}\n<\/code><\/pre>\n<p>\u5982\u679c<code>AnotherService<\/code>\u5305\u542b\u53ef\u53d8\u72b6\u6001\uff0c\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8c03\u7528<code>myMethod<\/code>\u53ef\u80fd\u5bfc\u81f4\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\n<\/li>\n<\/ol>\n<p>\u8981\u89e3\u51b3\u8fd9\u4e9b\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u53ef\u4ee5\u8003\u8651\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a<\/p>\n<ol>\n<li>\n<strong>\u907f\u514d\u5171\u4eab\u72b6\u6001\uff1a<\/strong><\/p>\n<ul>\n<li>\u5c3d\u91cf\u907f\u514d\u5728\u5355\u4f8bBean\u4e2d\u5305\u542b\u53ef\u53d8\u7684\u5171\u4eab\u72b6\u6001\uff0c\u7279\u522b\u662f\u5b9e\u4f8b\u53d8\u91cf\u3002\u5982\u679c\u9700\u8981\u5171\u4eab\u72b6\u6001\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6216\u8005\u5728\u65b9\u6cd5\u5185\u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u4f7f\u7528ThreadScope\uff1a<\/strong><\/p>\n<ul>\n<li>Spring\u63d0\u4f9b\u4e86<code>ThreadScope<\/code>\uff0c\u5141\u8bb8\u5728\u6bcf\u4e2a\u7ebf\u7a0b\u4e2d\u7ef4\u62a4\u4e00\u4e2a\u72ec\u7acb\u7684Bean\u5b9e\u4f8b\u3002\u8fd9\u6837\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u62e5\u6709\u81ea\u5df1\u7684Bean\u5b9e\u4f8b\uff0c\u4e0d\u4f1a\u76f8\u4e92\u5f71\u54cd\u3002\u4f46\u9700\u8981\u6ce8\u610f\uff0c\u4f7f\u7528<code>ThreadScope<\/code>\u53ef\u80fd\u4f1a\u589e\u52a0\u5185\u5b58\u5f00\u9500\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u4f1a\u6709\u81ea\u5df1\u7684\u5b9e\u4f8b\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-xml\">&lt;bean class=&quot;org.springframework.beans.factory.config.CustomScopeConfigurer&quot;&gt;\n    &lt;property name=&quot;scopes&quot;&gt;\n        &lt;map&gt;\n            &lt;entry key=&quot;thread&quot; 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