{"id":303101,"date":"2024-05-20T18:51:38","date_gmt":"2024-05-20T10:51:38","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/303101.html"},"modified":"2024-05-20T18:51:59","modified_gmt":"2024-05-20T10:51:59","slug":"spring-boot-%e7%9a%84%e8%87%aa%e5%8a%a8%e9%85%8d%e7%bd%ae%e6%98%af%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/303101.html","title":{"rendered":"Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u662f\u5982\u4f55\u5b9e\u73b0\u7684"},"content":{"rendered":"

\"Spring<\/p>\n

Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u901a\u8fc7\u4f7f\u7528 '@EnableAutoConfiguration' \u6ce8\u89e3\u3001'spring.factories' \u6587\u4ef6\u3001\u914d\u5408\u6761\u4ef6\u6ce8\u89e3\u5b9e\u73b0\u7684<\/strong>\u3002Spring Boot \u81ea\u52a8\u914d\u7f6e\u662f\u4e00\u79cd\u4fbf\u6377\u7279\u6027\uff0c\u5b83\u5c1d\u8bd5\u6839\u636e\u6dfb\u52a0\u5230\u9879\u76ee\u4e2d\u7684jar\u4f9d\u8d56\u6765\u9884\u6d4b\u548c\u914d\u7f6e\u5e94\u7528\u9700\u8981\u7684bean\u7ec4\u4ef6\u3002\u6838\u5fc3\u5728\u4e8e\u901a\u8fc7\u6761\u4ef6\u6ce8\u89e3\uff08\u5982 @ConditionalOnClass<\/code>\u3001@ConditionalOnMissingBean<\/code> \u7b49\uff09\u68c0\u6d4b\u7c7b\u8def\u5f84\u4e0b\u7684\u7c7b\u548cBean\u7684\u5b58\u5728\uff0c\u53ea\u6709\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u76f8\u5173\u7684\u81ea\u52a8\u914d\u7f6e\u624d\u4f1a\u88ab\u5e94\u7528\u3002<\/p>\n<\/p>\n

\u5f53\u6211\u4eec\u4f7f\u7528 @SpringBootApplication<\/code> \u6ce8\u89e3\u65f6\uff0c\u5176\u4e2d\u5305\u542b\u4e86 @EnableAutoConfiguration<\/code> \u6ce8\u89e3\uff0c\u8be5\u6ce8\u89e3\u662f\u81ea\u52a8\u914d\u7f6e\u7684\u5f00\u7aef\uff0c\u5b83\u544a\u8bc9Spring Boot\u5f00\u59cb\u5bfb\u627e\u53ef\u7528\u7684\u81ea\u52a8\u914d\u7f6e\u5e76\u5e94\u7528\u5b83\u4eec\u3002\u800c\u6240\u6709\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u90fd\u4f1a\u5728\u7c7b\u8def\u5f84\u4e0a\u901a\u8fc7 spring.factories<\/code> \u6587\u4ef6\u88ab\u5217\u51fa\u3002Spring Boot\u4f1a\u8bfb\u53d6\u8fd9\u4e9b\u914d\u7f6e\uff0c\u5e76\u6839\u636e\u6761\u4ef6\u6ce8\u89e3\u51b3\u5b9a\u662f\u5426\u5e94\u7528\u81ea\u52a8\u914d\u7f6e\u7c7b\u3002<\/p>\n<\/p>\n

\u4e00\u3001@ENABLEAUTOCONFIGURATION \u8be6\u89e3<\/h3>\n<\/p>\n

@EnableAutoConfiguration<\/strong> \u662f Spring Boot \u81ea\u52a8\u914d\u7f6e\u80cc\u540e\u7684\u542f\u52a8\u5f15\u64ce\u3002\u5f53\u4e00\u4e2a\u7c7b\u4f7f\u7528\u4e86\u8fd9\u4e2a\u6ce8\u89e3\uff0cSpring Boot \u4f1a\u81ea\u52a8\u626b\u63cf\u6240\u6709META-INF\/spring.factories\u914d\u7f6e\u6587\u4ef6\u4e2d\u6307\u5b9a\u7684\u914d\u7f6e\u7c7b\u3002<\/p>\n<\/p>\n

\u81ea\u52a8\u914d\u7f6e\u539f\u7406<\/h4>\n<\/p>\n

\u5728Spring Boot\u542f\u52a8\u8fc7\u7a0b\u4e2d\uff0c\u901a\u8fc7@EnableAutoConfiguration \u6ce8\u89e3\u5bfc\u5165\u4e86AutoConfigurationImportSelector \u7c7b\u7684selectImports\u65b9\u6cd5\uff0c\u5b83\u4f1a\u8bfb\u53d6\u6240\u6709JAR\u5305\u5185META-INF\/spring.factories\u4e2d\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\uff0c\u7136\u540e\u6839\u636e\u6761\u4ef6\u6ce8\u89e3\u51b3\u5b9a\u662f\u5426\u542f\u7528\u8fd9\u4e9b\u914d\u7f6e\u3002<\/p>\n<\/p>\n

\u6761\u4ef6\u8bc4\u4f30<\/h4>\n<\/p>\n

Spring Boot\u7684\u6761\u4ef6\u8bc4\u4f30\u662f\u901a\u8fc7\u6761\u4ef6\u6ce8\u89e3\u6765\u5b9e\u73b0\u7684\u3002\u4f8b\u5982\uff0c@ConditionalOnClass<\/code> \u8bf4\u660e\u5982\u679cclasspath\u4e0b\u6709\u6307\u5b9a\u7684\u7c7b\uff0c\u5219\u6761\u4ef6\u6210\u7acb\u3002Spring Boot\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u4f1a\u5927\u91cf\u4f7f\u7528\u8fd9\u6837\u7684\u6761\u4ef6\u6ce8\u89e3\u6765\u63a7\u5236\u914d\u7f6e\u7684\u5e94\u7528\u3002<\/p>\n<\/p>\n

\u4e8c\u3001SPRING.FACTORIES \u7684\u89d2\u8272<\/h3>\n<\/p>\n

spring.factories<\/strong> \u5728 Spring Boot \u81ea\u52a8\u914d\u7f6e\u673a\u5236\u4e2d\u626e\u6f14\u7740\u91cd\u8981\u7684\u89d2\u8272\u3002\u5b83\u4f4d\u4e8eJAR\u5305\u7684META-INF\u76ee\u5f55\u4e0b\uff0c\u662f\u4e00\u4e2a\u5c5e\u6027\u6587\u4ef6\u3002<\/p>\n<\/p>\n

\u81ea\u52a8\u914d\u7f6e\u805a\u5408<\/h4>\n<\/p>\n

Spring Boot \u5c06\u6240\u6709\u6709\u8d44\u683c\u53c2\u4e0e\u81ea\u52a8\u914d\u7f6e\u7684\u7c7b\u90fd\u5217\u5728\u6b64\u6587\u4ef6\u4e2d\u3002\u4e0d\u4ec5Spring Boot\u5b98\u65b9\u63d0\u4f9b\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u88ab\u5217\u51fa\u5728\u8fd9\u91cc\uff0c\u7b2c\u4e09\u65b9\u5e93\u4e5f\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0\u81ea\u5df1\u7684spring.factories\u6587\u4ef6\u6765\u63d0\u4f9b\u81ea\u52a8\u914d\u7f6e\u3002<\/p>\n<\/p>\n

\u914d\u7f6e\u52a0\u8f7d\u987a\u5e8f<\/h4>\n<\/p>\n

\u7531\u4e8e\u53ef\u80fd\u5b58\u5728\u591a\u4e2aspring.factories\u6587\u4ef6\uff0cSpring Boot\u9700\u8981\u6b63\u786e\u5904\u7406\u5b83\u4eec\u4e4b\u95f4\u7684\u52a0\u8f7d\u987a\u5e8f\u548c\u4f18\u5148\u7ea7\u3002\u901a\u5e38\uff0c\u7ea6\u5b9a\u5927\u4e8e\u914d\u7f6e\uff0c\u6846\u67b6\u63d0\u4f9b\u7684\u6838\u5fc3\u81ea\u52a8\u914d\u7f6e\u7c7b\u62e5\u6709\u66f4\u4f4e\u7684\u4f18\u5148\u7ea7\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u901a\u8fc7\u81ea\u5b9a\u4e49\u914d\u7f6e\u8986\u76d6\u9ed8\u8ba4\u884c\u4e3a\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u6761\u4ef6\u6ce8\u89e3\u7684\u5de5\u4f5c\u65b9\u5f0f<\/h3>\n<\/p>\n

\u6761\u4ef6\u6ce8\u89e3\u662fSpring Boot\u5b9e\u73b0\u7cbe\u7ec6\u63a7\u5236\u81ea\u52a8\u914d\u7f6e\u7684\u6838\u5fc3\u3002\u901a\u8fc7\u4e00\u7cfb\u5217\u7684\u6761\u4ef6\u6ce8\u89e3\uff0cSpring Boot\u80fd\u591f\u68c0\u6d4b\u73af\u5883\u53d8\u91cf\u3001\u7c7b\u662f\u5426\u5b58\u5728\u3001Bean\u662f\u5426\u521b\u5efa\u7b49\u7b49\u3002<\/p>\n<\/p>\n

\u7075\u6d3b\u7684\u6761\u4ef6\u68c0\u67e5<\/h4>\n<\/p>\n

@ConditionalOnClass<\/code> \u548c @ConditionalOnMissingBean<\/code> \u4ec5\u4ec5\u662f\u6761\u4ef6\u6ce8\u89e3\u4e2d\u7684\u4e24\u79cd\u3002Spring Boot\u8fd8\u63d0\u4f9b\u4e86@ConditionalOnProperty<\/code>\u3001@ConditionalOnResource<\/code>\u7b49\uff0c\u7528\u4ee5\u68c0\u67e5\u914d\u7f6e\u6587\u4ef6\u3001\u8d44\u6e90\u6587\u4ef6\u7b49\u6761\u4ef6\u3002<\/p>\n<\/p>\n

\u81ea\u5b9a\u4e49\u6761\u4ef6\u6ce8\u89e3<\/h4>\n<\/p>\n

Spring Boot \u4e5f\u5141\u8bb8\u81ea\u5b9a\u4e49\u6761\u4ef6\u6ce8\u89e3\u3002\u5982\u679c\u5f00\u53d1\u8005\u6709\u7279\u5b9a\u7684\u542f\u52a8\u6761\u4ef6\u9700\u8981\u68c0\u6d4b\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0Condition\u63a5\u53e3\u6765\u521b\u5efa\u81ea\u5df1\u7684\u6761\u4ef6\u6ce8\u89e3\uff0c\u5b9e\u73b0\u66f4\u7ec6\u7c92\u5ea6\u7684\u63a7\u5236\u3002<\/p>\n<\/p>\n

\u56db\u3001\u81ea\u52a8\u914d\u7f6e\u7684\u8986\u76d6\u4e0e\u8c03\u6574<\/h3>\n<\/p>\n

\u5c3d\u7ba1Spring Boot\u7684\u81ea\u52a8\u914d\u7f6e\u53ef\u4ee5\u5e26\u6765\u5f88\u5927\u7684\u4fbf\u5229\uff0c\u4f46\u5f00\u53d1\u8005\u6709\u65f6\u4ecd\u9700\u8981\u8c03\u6574\u6216\u8986\u76d6\u81ea\u52a8\u914d\u7f6e\u3002<\/p>\n<\/p>\n

\u914d\u7f6e\u4f18\u5148\u7ea7<\/h4>\n<\/p>\n

\u81ea\u52a8\u914d\u7f6e\u603b\u662f\u5c0a\u91cd\u7528\u6237\u7684\u914d\u7f6e\uff0c\u7528\u6237\u81ea\u5b9a\u4e49\u7684bean\u603b\u4f1a\u8986\u76d6\u81ea\u52a8\u914d\u7f6e\u4e2d\u7684\u540c\u540dbean\u3002\u5728\u914d\u7f6e\u6587\u4ef6application.properties\u6216application.yml\u4e2d\u5b9a\u4e49\u7684\u5c5e\u6027\u4f1a\u8986\u76d6\u81ea\u52a8\u914d\u7f6e\u7684\u5c5e\u6027\u3002<\/p>\n<\/p>\n

\u6392\u9664\u81ea\u52a8\u914d\u7f6e<\/h4>\n<\/p>\n

\u5982\u679c\u5f00\u53d1\u8005\u5e0c\u671b\u5b8c\u5168\u5173\u95ed\u67d0\u90e8\u5206\u81ea\u52a8\u914d\u7f6e\uff0c\u53ef\u4ee5\u4f7f\u7528 @EnableAutoConfiguration<\/code> \u6ce8\u89e3\u7684 exclude \u5c5e\u6027\u6765\u6392\u9664\u7279\u5b9a\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u3002\u4f8b\u5982\uff0c\u5c06 DataSourceAutoConfiguration<\/code> \u6392\u9664\u51fa\u81ea\u52a8\u914d\u7f6e\u9002\u7528\u8303\u56f4\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u81ea\u52a8\u914d\u7f6e\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n<\/p>\n

\u4e3a\u4e86\u5145\u5206\u5229\u7528Spring Boot\u7684\u81ea\u52a8\u914d\u7f6e\u7279\u6027\uff0c\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5b9e\u8df5\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<\/p>\n

\u907f\u514d'\u91cd'\u914d\u7f6e<\/h4>\n<\/p>\n

\u4f7f\u7528Spring Boot\u7684\u4e00\u4e2a\u6838\u5fc3\u7406\u5ff5\u662f\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u914d\u7f6e\uff0c\u56e0\u6b64\u5efa\u8bae\u53ea\u914d\u7f6e\u90a3\u4e9b\u4e0d\u80fd\u88ab\u81ea\u52a8\u914d\u7f6e\u6b63\u786e\u5904\u7406\u7684bean\uff0c\u5176\u4f59\u4ea4\u7531\u81ea\u52a8\u914d\u7f6e\u5904\u7406\u3002<\/p>\n<\/p>\n

\u4f7f\u7528spring-boot-actuator\u76d1\u63a7<\/h4>\n<\/p>\n

spring-boot-actuator\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u7ec4\u76d1\u63a7\u548c\u7ba1\u7406\u9879\u76ee\u7684\u529f\u80fd\uff0c\u5176\u4e2d \/autoconfig<\/code> \u7aef\u70b9\u53ef\u4ee5\u7528\u6765\u67e5\u770b\u81ea\u52a8\u914d\u7f6e\u7684\u62a5\u544a\uff0c\u8fd9\u5bf9\u4e8e\u8c03\u8bd5\u548c\u7406\u89e3\u81ea\u52a8\u914d\u7f6e\u884c\u4e3a\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n<\/p>\n

\u901a\u8fc7\u6df1\u5165\u7406\u89e3Spring Boot\u7684\u81ea\u52a8\u914d\u7f6e\u673a\u5236\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u5f00\u53d1\u548c\u90e8\u7f72Spring\u5e94\u7528\u7a0b\u5e8f\uff0c\u540c\u65f6\u8fd8\u80fd\u4fdd\u6301\u8f83\u9ad8\u7684\u53ef\u914d\u7f6e\u6027\u548c\u63a7\u5236\u80fd\u529b\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

\u4ec0\u4e48\u662f Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u529f\u80fd\uff1f<\/strong><\/p>\n

Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u529f\u80fd\u662f\u6307\u5b83\u80fd\u591f\u6839\u636e\u5f53\u524d\u5de5\u7a0b\u7684\u4f9d\u8d56\u548c\u914d\u7f6e\u6587\u4ef6\uff0c\u81ea\u52a8\u63a8\u65ad\u51fa\u5e94\u7528\u6240\u9700\u7684\u5404\u79cd\u7ec4\u4ef6\u7684\u914d\u7f6e\uff0c\u51cf\u5c11\u4e86\u5f00\u53d1\u4eba\u5458\u624b\u52a8\u914d\u7f6e\u7684\u5de5\u4f5c\u91cf\u3002<\/p>\n

Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1f<\/strong><\/p>\n

Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u662f\u901a\u8fc7\u5229\u7528\u6761\u4ef6\u6ce8\u89e3\u548c\u914d\u7f6e\u9879\u5c5e\u6027\u6765\u5b9e\u73b0\u7684\u3002\u5728\u542f\u52a8\u8fc7\u7a0b\u4e2d\uff0cSpring Boot \u4f1a\u626b\u63cf\u6240\u6709\u7684\u4f9d\u8d56\u548c\u914d\u7f6e\u6587\u4ef6\uff0c\u6839\u636e\u6761\u4ef6\u6ce8\u89e3\u7684\u89c4\u5219\uff0c\u51b3\u5b9a\u54ea\u4e9b\u7ec4\u4ef6\u9700\u8981\u88ab\u81ea\u52a8\u914d\u7f6e\u3002\u540c\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u9879\u5c5e\u6027\u6765\u7279\u6b8a\u6307\u5b9a\u67d0\u4e9b\u7ec4\u4ef6\u7684\u914d\u7f6e\u65b9\u5f0f\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u529f\u80fd\uff1f<\/strong><\/p>\n

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