{"id":5089,"date":"2024-08-01T22:48:57","date_gmt":"2024-08-01T14:48:57","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=5089"},"modified":"2024-08-01T22:48:57","modified_gmt":"2024-08-01T14:48:57","slug":"%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9aspring-bean-%e7%9a%84%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e9%83%bd%e4%b8%8d%e4%bc%9a%ef%bc%8c%e4%bd%a0%e8%b5%b0%e5%90%a7%e4%b8%8b%e4%b8%80%e4%bd%8d","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/spring-boot\/%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9aspring-bean-%e7%9a%84%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e9%83%bd%e4%b8%8d%e4%bc%9a%ef%bc%8c%e4%bd%a0%e8%b5%b0%e5%90%a7%e4%b8%8b%e4%b8%80%e4%bd%8d\/","title":{"rendered":"\u9762\u8bd5\u5b98\uff1aSpring Bean \u7684\u751f\u547d\u5468\u671f\u90fd\u4e0d\u4f1a\uff0c\u4f60\u8d70\u5427\u4e0b\u4e00\u4f4d"},"content":{"rendered":"
\n
\n

\u5f15\u8a00\uff1a\u5728\u9762\u8bd5\u4e2d\uff0c\u4e86\u89e3 Spring Bean \u7684\u751f\u547d\u5468\u671f\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u6d89\u53ca\u5230\u4e86 Spring \u6846\u67b6\u4e2d\u5bf9\u8c61\u7684\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u4f7f\u7528\u548c\u9500\u6bc1\u7b49\u5173\u952e\u8fc7\u7a0b\u3002\u638c\u63e1 Spring Bean \u7684\u751f\u547d\u5468\u671f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3 Spring \u6846\u67b6\u7684\u8fd0\u4f5c\u673a\u5236\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u66f4\u597d\u5730\u5229\u7528 Spring \u63d0\u4f9b\u7684\u529f\u80fd\u3002<\/p>\n

<\/span>\u9898\u76ee<\/span><\/span><\/h2>\n

\u9762\u8bd5\u5b98\uff1aSpring Bean \u7684\u751f\u547d\u5468\u671f\u90fd\u4e0d\u4f1a\uff0c\u4f60\u8d70\u5427\u4e0b\u4e00\u4f4d<\/p>\n

<\/span>\u63a8\u8350\u89e3\u6790<\/span><\/span><\/h2>\n

<\/span><\/span>Spring \u6846\u67b6\u4e2d Bean \u7684\u751f\u547d\u5468\u671f<\/span><\/span><\/h3>\n

\u5728Spring\u6846\u67b6\u4e2d\uff0cBean\u7684\u751f\u547d\u5468\u671f\u7ecf\u5386\u4ee5\u4e0b\u51e0\u4e2a\u9636\u6bb5\uff1a<\/p>\n

1\uff09\u5b9e\u4f8b\u5316\uff1a<\/strong> Spring \u6839\u636e\u914d\u7f6e\u6587\u4ef6\u6216\u6ce8\u89e3\u7b49\u65b9\u5f0f\u521b\u5efa Bean \u5b9e\u4f8b\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u5bb9\u5668\u4e2d\u3002<\/p>\n

2\uff09\u5c5e\u6027\u8d4b\u503c\uff1a<\/strong> Spring \u81ea\u52a8\u5c06Bean\u7684\u5c5e\u6027\u503c\u4ece\u914d\u7f6e\u6587\u4ef6\u6216\u6ce8\u89e3\u7b49\u65b9\u5f0f\u4e2d\u6ce8\u5165\u5230 Bean \u5b9e\u4f8b\u4e2d\u3002<\/p>\n

3\uff09\u521d\u59cb\u5316\uff1a<\/strong> Spring \u8c03\u7528 Bean \u5b9e\u4f8b\u7684 init-method<\/code>\u65b9\u6cd5\uff0c\u5b8c\u6210\u4e00\u4e9b\u521d\u59cb\u5316\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u5efa\u7acb\u6570\u636e\u5e93\u8fde\u63a5\u7b49\u3002<\/p>\n

4\uff09\u4f7f\u7528\uff1a<\/strong> Bean \u5b9e\u4f8b\u5df2\u7ecf\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\uff0c\u4f9b\u5e94\u7528\u7a0b\u5e8f\u8c03\u7528\u3002<\/p>\n

5\uff09\u9500\u6bc1\uff1a<\/strong> Spring \u8c03\u7528 Bean \u5b9e\u4f8b\u7684 destroy-method<\/code> \u65b9\u6cd5\uff0c\u5b8c\u6210\u4e00\u4e9b\u8d44\u6e90\u7684\u91ca\u653e\u548c\u6e05\u7406\u64cd\u4f5c\uff0c\u4f8b\u5982\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u7b49\u3002<\/p>\n

<\/span><\/span>Bean\u751f\u547d\u5468\u671f\u8be6\u89e3<\/span><\/span><\/h3>\n

1\uff09\u89e3\u6790\u7c7b\u5f97\u5230 BeanDefinition\u3002<\/p>\n

2\uff09\u5982\u679c\u6709\u591a\u4e2a\u6784\u9020\u65b9\u6cd5\uff0c\u5219\u63a8\u65ad\u6784\u9020\u65b9\u6cd5\u3002<\/p>\n

3\uff09\u786e\u5b9a\u597d\u6784\u9020\u65b9\u6cd5\u540e\uff0c\u8fdb\u884c\u5b9e\u4f8b\u5316\u5f97\u5230\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n

4\uff09\u5bf9\u5bf9\u8c61\u4e2d\u52a0\u4e86 @Autowired<\/code> \u6ce8\u89e3\u7684\u5c5e\u6027\u8fdb\u884c\u5c5e\u6027\u586b\u5145\u3002<\/p>\n

5\uff09\u56de\u8c03 Aware \u65b9\u6cd5\uff0c\u5982 BeanNameAware\uff0cBeanFactoryAware\u3002<\/p>\n

6\uff09\u8c03\u7528 BeanPostProcessor \u7684\u521d\u59cb\u5316\u524d\u7684\u65b9\u6cd5\u3002<\/p>\n

7\uff09\u8c03\u7528\u521d\u59cb\u5316\u65b9\u6cd5\u3002<\/p>\n

8\uff09\u8c03\u7528 BeanPostProcessor \u7684\u521d\u59cb\u5316\u540e\u7684\u65b9\u6cd5\uff0c\u5728\u8fd9\u91cc\u8fdb\u884c AOP\u3002<\/p>\n

9\uff09\u5982\u679c\u5f53\u524d\u521b\u5efa\u7684 Bean \u662f\u5355\u4f8b\u7684\uff0c\u5219\u4f1a\u628a Bean \u653e\u5165\u5355\u4f8b\u6c60\u91cc\u3002<\/p>\n

10\uff09\u4f7f\u7528 Bean\u3002<\/p>\n

11\uff09Spring \u5bb9\u5668\u5173\u95ed\u65f6\u8c03\u7528 DisposableBean \u4e2d\u7684 destroy()<\/code> \u65b9\u6cd5\u3002<\/p>\n

<\/span>Bean\u4f5c\u7528\u57df<\/span><\/span><\/h2>\n

Spring \u6846\u67b6\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u51e0\u79cd\u5e38\u89c1\u7684 Bean \u4f5c\u7528\u57df\uff1a<\/p>\n

1\uff09Singleton\uff08\u5355\u4f8b\uff09\uff1a<\/strong> Spring \u9ed8\u8ba4\u7684\u4f5c\u7528\u57df\u3002\u5728 Singleton \u4f5c\u7528\u57df\u4e0b\uff0cSpring \u5bb9\u5668\u53ea\u4f1a\u521b\u5efa Bean \u7684\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u5e76\u5728\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u5185\u90fd\u5171\u4eab\u8fd9\u4e2a\u5b9e\u4f8b\u3002<\/p>\n

2\uff09Prototype\uff08\u539f\u578b\uff09\uff1a<\/strong> \u6bcf\u6b21\u8bf7\u6c42\u8be5 Bean \u65f6\uff0cSpring \u5bb9\u5668\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\uff0c\u5e76\u8fd4\u56de\u8be5\u5b9e\u4f8b\u3002\u5373\u6bcf\u6b21\u8c03\u7528 getBean()<\/code> \u65b9\u6cd5\u65f6\u90fd\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684 Bean\u5b9e\u4f8b\u3002\u9002\u7528\u4e8e\u90a3\u4e9b\u9700\u8981\u72b6\u6001\u7684 Bean\uff0c\u4f8b\u5982\u63a7\u5236\u5668\u5bf9\u8c61\u3001\u7ebf\u7a0b\u5b89\u5168\u7684\u5bf9\u8c61\u7b49\u3002<\/p>\n

3\uff09Request\uff08\u8bf7\u6c42\uff09\uff1a<\/strong> \u5728 Web \u5e94\u7528\u4e2d\uff0c\u6bcf\u4e2aHTTP\u8bf7\u6c42\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Bean \u5b9e\u4f8b\u3002\u8be5\u4f5c\u7528\u57df\u4ec5\u5728 Web \u73af\u5883\u4e2d\u6709\u6548\uff0c\u7528\u4e8e\u5728\u6bcf\u4e2a HTTP \u8bf7\u6c42\u5904\u7406\u671f\u95f4\u521b\u5efa\u65b0\u7684Bean \u5b9e\u4f8b\u3002\u9002\u7528\u4e8e\u90a3\u4e9b\u9700\u8981\u5728\u6bcf\u4e2a\u8bf7\u6c42\u4e2d\u4fdd\u6301\u72b6\u6001\u7684 Bean\u3002<\/p>\n

4\uff09Session\uff08\u4f1a\u8bdd\uff09\uff1a<\/strong> \u5728 Web \u5e94\u7528\u4e2d\uff0c\u6bcf\u4e2a\u7528\u6237\u4f1a\u8bdd\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Bean \u5b9e\u4f8b\u3002\u8be5\u4f5c\u7528\u57df\u4ec5\u5728 Web \u73af\u5883\u4e2d\u6709\u6548\uff0c\u7528\u4e8e\u5728\u6bcf\u4e2a\u7528\u6237\u4f1a\u8bdd\u671f\u95f4\u521b\u5efa\u65b0\u7684 Bean \u5b9e\u4f8b\u3002\u9002\u7528\u4e8e\u90a3\u4e9b\u9700\u8981\u5728\u6574\u4e2a\u4f1a\u8bdd\u671f\u95f4\u4fdd\u6301\u72b6\u6001\u7684 Bean\u3002<\/p>\n

5\uff09Global Session\uff08\u5168\u5c40\u4f1a\u8bdd\uff09\uff1a<\/strong> \u8be5\u4f5c\u7528\u57df\u4ec5\u5728\u57fa\u4e8e portlet \u7684 Web \u5e94\u7528\u4e2d\u6709\u6548\u3002\u5728 portlet \u73af\u5883\u4e2d\uff0c\u6bcf\u4e2a\u5168\u5c40\u4f1a\u8bdd\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Bean \u5b9e\u4f8b\u3002<\/p>\n

<\/span>\u5176\u4ed6\u8865\u5145<\/span><\/span><\/h2>\n

\u9c7c\u806a\u660e AI \u7684\u56de\u7b54\uff1a<\/p>\n

<\/span><\/p>\n

\u9c7c\u806a\u660e AI \u5730\u5740\uff1ahttps:\/\/www.yucongming.com\/<\/p>\n<\/blockquote>\n

\u5728 Spring \u6846\u67b6\u4e2d\uff0cBean \u7684\u751f\u547d\u5468\u671f\u6307\u7684\u662f\u5728\u5bb9\u5668\u4e2d\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u4f7f\u7528\u548c\u9500\u6bc1 Bean \u7684\u6574\u4e2a\u8fc7\u7a0b\u3002Spring \u5bb9\u5668\u8d1f\u8d23\u7ba1\u7406 Bean \u7684\u751f\u547d\u5468\u671f\uff0c\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u9636\u6bb5\uff1a<\/p>\n

    \n
  1. \n
    \u5b9e\u4f8b\u5316\uff1a\u5bb9\u5668\u6839\u636e\u914d\u7f6e\u4fe1\u606f\u6216\u8005\u6ce8\u89e3\u521b\u5efa Bean \u7684\u5b9e\u4f8b\u3002<\/section>\n<\/li>\n
  2. \n
    \u5c5e\u6027\u8bbe\u7f6e\uff1a\u5bb9\u5668\u5c06 Bean \u7684\u5c5e\u6027\u503c\u6ce8\u5165\u5230 Bean \u5b9e\u4f8b\u4e2d\uff0c\u5305\u62ec\u901a\u8fc7\u6784\u9020\u51fd\u6570\u6ce8\u5165\u3001\u5c5e\u6027\u7684\u6ce8\u5165\u6216\u8005\u5176\u4ed6\u7279\u5b9a\u7684\u6ce8\u5165\u65b9\u5f0f\u3002<\/section>\n<\/li>\n
  3. \n
    \u521d\u59cb\u5316\uff1a\u5728 Bean \u5b9e\u4f8b\u5316\u5e76\u8bbe\u7f6e\u597d\u5c5e\u6027\u4e4b\u540e\uff0cSpring \u5bb9\u5668\u53ef\u4ee5\u8c03\u7528\u7279\u5b9a\u7684\u521d\u59cb\u5316\u65b9\u6cd5\u8fdb\u884c\u4e00\u4e9b\u989d\u5916\u7684\u521d\u59cb\u5316\u5de5\u4f5c\u3002\u8fd9\u4e2a\u521d\u59cb\u5316\u65b9\u6cd5\u53ef\u4ee5\u901a\u8fc7 XML \u914d\u7f6e\u6587\u4ef6\u4e2d\u7684 init-method \u5c5e\u6027\u6216\u8005\u6ce8\u89e3\u4e2d\u7684 @PostConstruct<\/code> \u6765\u6307\u5b9a\u3002<\/section>\n<\/li>\n
  4. \n
    \u4f7f\u7528\uff1a\u6b64\u65f6 Bean \u5df2\u7ecf\u5b8c\u5168\u521d\u59cb\u5316\uff0c\u53ef\u4ee5\u88ab\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u4e86\u3002<\/section>\n<\/li>\n
  5. \n
    \u9500\u6bc1\uff1a\u5f53\u5bb9\u5668\u5173\u95ed\u65f6\uff0c\u6216\u8005\u901a\u8fc7\u7f16\u7a0b\u7684\u65b9\u5f0f\u9500\u6bc1 Bean \u65f6\uff0c\u5bb9\u5668\u4f1a\u8c03\u7528 Bean \u7684\u9500\u6bc1\u65b9\u6cd5\u8fdb\u884c\u8d44\u6e90\u7684\u91ca\u653e\u548c\u6e05\u7406\u5de5\u4f5c\u3002\u8fd9\u4e2a\u9500\u6bc1\u65b9\u6cd5\u53ef\u4ee5\u901a\u8fc7 XML \u914d\u7f6e\u6587\u4ef6\u4e2d\u7684destroy-method \u5c5e\u6027\u6216\u8005\u6ce8\u89e3\u4e2d\u7684 @PreDestroy<\/code> \u6765\u6307\u5b9a\u3002<\/section>\n<\/li>\n<\/ol>\n

    \u5f3a\u8c03\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n

    1\uff09Aware \u56de\u8c03\u65b9\u6cd5\uff1a<\/strong> \u5728 Bean \u5b9e\u4f8b\u5316\u540e\uff0cSpring \u4f1a\u8c03\u7528\u4e00\u4e9b Aware \u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\uff0c\u5982 BeanNameAware\u3001BeanFactoryAware \u7b49\uff0c\u8ba9 Bean \u53ef\u4ee5\u611f\u77e5\u5230\u81ea\u5df1\u7684\u4e00\u4e9b\u73af\u5883\u4fe1\u606f\u6216\u5bb9\u5668\u7684\u5b58\u5728\u3002<\/p>\n

    2\uff09BeanPostProcessor \u7684\u4f5c\u7528\uff1a<\/strong> BeanPostProcessor \u63a5\u53e3\u63d0\u4f9b\u4e86\u5728 Bean \u5b9e\u4f8b\u5316\u4e4b\u540e\u548c\u521d\u59cb\u5316\u4e4b\u524d\u4ee5\u53ca\u521d\u59cb\u5316\u4e4b\u540e\u7684\u56de\u8c03\u65b9\u6cd5\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728 Bean \u521d\u59cb\u5316\u7684\u4e0d\u540c\u9636\u6bb5\u8fdb\u884c\u4e00\u4e9b\u81ea\u5b9a\u4e49\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982 AOP \u529f\u80fd\u5c31\u662f\u901a\u8fc7 BeanPostProcessor \u5b9e\u73b0\u7684\u3002<\/p>\n

    3\uff09DisposableBean \u548c InitializingBean \u63a5\u53e3\uff1a<\/strong> \u8fd9\u4e24\u4e2a\u63a5\u53e3\u5206\u522b\u5b9a\u4e49\u4e86\u5728 Bean \u9500\u6bc1\u524d\u548c\u521d\u59cb\u5316\u540e\u7684\u64cd\u4f5c\u65b9\u6cd5\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5efa\u8bae\u4f7f\u7528\u6ce8\u89e3\u65b9\u5f0f (@PostConstruct<\/code> \u548c @PreDestroy<\/code>) \u6765\u66ff\u4ee3\u8fd9\u4e24\u4e2a\u63a5\u53e3\uff0c\u56e0\u4e3a\u6ce8\u89e3\u65b9\u5f0f\u66f4\u52a0\u7075\u6d3b\u548c\u65b9\u4fbf\u3002<\/p>\n

    4\uff09Bean \u4f5c\u7528\u57df\u7684\u9009\u62e9\uff1a<\/strong> \u5728\u4f7f\u7528 Bean \u65f6\uff0c\u8981\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u4f5c\u7528\u57df\u3002Singleton \u9002\u7528\u4e8e\u90a3\u4e9b\u65e0\u72b6\u6001\u7684 Bean\uff0cPrototype \u9002\u7528\u4e8e\u6709\u72b6\u6001\u7684 Bean\uff0c\u800c Request \u548c Session \u5219\u9002\u7528\u4e8e Web \u5e94\u7528\u4e2d\u9700\u8981\u4fdd\u6301\u72b6\u6001\u7684 Bean\u3002Global Session \u5219\u9002\u7528\u4e8e\u7279\u5b9a\u7684 Web \u73af\u5883\u3002<\/p>\n

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    <\/span><\/span>\u63a8\u8350\u6587\u7ae0\u548c\u4e66\u7c4d<\/span><\/span><\/h3>\n

    \u6587\u7ae0\uff1ahttps:\/\/zhuanlan.zhihu.com\/p\/86293659<\/p>\n

    \u4e66\u7c4d\uff1a\u300a Java \u6838\u5fc3\u6280\u672f\u5377 I \u300b<\/p>\n

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