{"id":8480,"date":"2023-11-28T20:29:26","date_gmt":"2023-11-28T12:29:26","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=8480"},"modified":"2023-12-06T10:36:07","modified_gmt":"2023-12-06T02:36:07","slug":"springboot-de-zi-dong-pei-zhi-shi-ru-he-shi-xian-d","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/springboot-de-zi-dong-pei-zhi-shi-ru-he-shi-xian-d\/","title":{"rendered":"SpringBoot\u7684\u81ea\u52a8\u914d\u7f6e\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1f"},"content":{"rendered":"

Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u662f\u901a\u8fc7 @EnableAutoConfiguration<\/code> \u6ce8\u89e3\u5b9e\u73b0\u7684\u3002\u8fd9\u4e2a\u6ce8\u89e3\u6807\u6ce8\u5728\u4e3b\u914d\u7f6e\u7c7b\u4e0a\uff0c\u901a\u5e38\u662f Spring Boot \u5e94\u7528\u7684\u5165\u53e3\u7c7b\uff0c\u6bd4\u5982\u5e26\u6709 main<\/code> \u65b9\u6cd5\u7684\u7c7b\u3002<\/p>\n

@EnableAutoConfiguration<\/code> \u6ce8\u89e3\u4f7f\u7528\u4e86 Spring Framework \u4e2d\u7684\u6761\u4ef6\u5316\u6ce8\u89e3 @ConditionalOnClass<\/code>\u3001@ConditionalOnMissingBean<\/code> \u7b49\uff0c\u901a\u8fc7\u6761\u4ef6\u5224\u65ad\u6765\u786e\u5b9a\u662f\u5426\u81ea\u52a8\u914d\u7f6e\u67d0\u4e9b\u529f\u80fd\u3002\u5982\u679c\u7c7b\u8def\u5f84\u4e0a\u5b58\u5728\u67d0\u4e2a\u7279\u5b9a\u7684\u7c7b\u3001\u67d0\u4e2a Bean \u4e0d\u5b58\u5728\u7b49\u6761\u4ef6\u6ee1\u8db3\uff0c\u90a3\u4e48\u76f8\u5173\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u5c31\u4f1a\u751f\u6548\u3002<\/p>\n

\u81ea\u52a8\u914d\u7f6e\u7c7b\u901a\u5e38\u5305\u542b\u4e86\u5bf9\u5e94\u529f\u80fd\u7684\u9ed8\u8ba4\u914d\u7f6e\uff0c\u4f8b\u5982\u914d\u7f6e\u6570\u636e\u6e90\u3001\u914d\u7f6e\u4e8b\u52a1\u7ba1\u7406\u3001\u914d\u7f6e\u89c6\u56fe\u89e3\u6790\u5668\u7b49\u3002\u8fd9\u4e9b\u914d\u7f6e\u4f1a\u5728\u7279\u5b9a\u7684\u6761\u4ef6\u4e0b\u88ab\u52a0\u8f7d\u5230 Spring \u4e0a\u4e0b\u6587\u4e2d\uff0c\u4ee5\u63d0\u4f9b\u9ed8\u8ba4\u7684\u914d\u7f6e\u65b9\u6848\u3002<\/p>\n

Spring Boot \u901a\u8fc7 spring.factories<\/code> \u6587\u4ef6\u6765\u58f0\u660e\u81ea\u52a8\u914d\u7f6e\u3002\u5728\u6bcf\u4e2a\u81ea\u52a8\u914d\u7f6e\u6a21\u5757\u7684 META-INF<\/code> \u76ee\u5f55\u4e0b\u90fd\u5305\u542b\u4e00\u4e2a spring.factories<\/code> \u6587\u4ef6\uff0c\u5176\u4e2d\u5217\u51fa\u4e86\u5f53\u524d\u6a21\u5757\u4e0b\u6240\u6709\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u3002Spring Boot \u5728\u542f\u52a8\u8fc7\u7a0b\u4e2d\u4f1a\u81ea\u52a8\u52a0\u8f7d\u8fd9\u4e9b\u6587\u4ef6\uff0c\u8fdb\u800c\u5c06\u76f8\u5173\u7684\u81ea\u52a8\u914d\u7f6e\u7c7b\u7eb3\u5165\u5230\u5e94\u7528\u7684\u4e0a\u4e0b\u6587\u4e2d\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5316\u7684\u4f8b\u5b50\uff0c\u6f14\u793a\u4e86\u81ea\u52a8\u914d\u7f6e\u662f\u5982\u4f55\u751f\u6548\u7684\uff1a<\/p>\n

    \n
  1. \nMyAutoConfiguration.java<\/code>\uff1a<\/strong><\/p>\n
    @Configuration\n@ConditionalOnClass(MyService.class)\npublic class MyAutoConfiguration {\n\n    @Bean\n    @ConditionalOnMissingBean\n    public MyService myService() {\n        return new MyService();\n    }\n}\n<\/code><\/pre>\n
    \u4e0a\u8ff0\u4ee3\u7801\u8868\u793a\uff0c\u5982\u679c\u7c7b\u8def\u5f84\u4e2d\u5b58\u5728 MyService<\/code> \u7c7b\uff0c\u4e14\u4e0d\u5b58\u5728\u540d\u4e3a myService<\/code> \u7684 Bean\uff0c\u5219\u4f1a\u81ea\u52a8\u914d\u7f6e\u4e00\u4e2a\u540d\u4e3a myService<\/code> \u7684 Bean\u3002\n<\/li>\n
  2. \nMETA-INF\/spring.factories<\/code> \u6587\u4ef6\uff1a<\/strong><\/p>\n
    org.springframework.boot.autoconfigure.EnableAutoConfiguration=\\\ncom.example.MyAutoConfiguration\n<\/code><\/pre>\n
    \u4e0a\u8ff0\u4ee3\u7801\u544a\u8bc9 Spring Boot \u5728\u81ea\u52a8\u914d\u7f6e\u8fc7\u7a0b\u4e2d\u52a0\u8f7d com.example.MyAutoConfiguration<\/code> \u8fd9\u4e2a\u81ea\u52a8\u914d\u7f6e\u7c7b\u3002\n<\/li>\n<\/ol>\n
    \u901a\u8fc7\u8fd9\u79cd\u673a\u5236\uff0cSpring Boot \u63d0\u4f9b\u4e86\u975e\u5e38\u7075\u6d3b\u7684\u81ea\u52a8\u914d\u7f6e\u65b9\u5f0f\uff0c\u5f00\u53d1\u8005\u53ea\u9700\u8981\u4e13\u6ce8\u4e8e\u5e94\u7528\u7a0b\u5e8f\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u800c\u4e0d\u7528\u8fc7\u591a\u5173\u5fc3\u5e95\u5c42\u7684\u914d\u7f6e\u3002\u540c\u65f6\uff0cSpring Boot \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5c5e\u6027\u914d\u7f6e\u65b9\u5f0f\uff0c\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u6216\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9a\u5236\u81ea\u52a8\u914d\u7f6e\u7684\u884c\u4e3a\u3002\u8fd9\u79cd\u81ea\u52a8\u914d\u7f6e\u7684\u7279\u6027\u4f7f\u5f97 Spring Boot \u5e94\u7528\u7684\u642d\u5efa\u548c\u5f00\u53d1\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u548c\u5feb\u901f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Spring Boot \u7684\u81ea\u52a8\u914d\u7f6e\u662f\u901a\u8fc7 @EnableAutoConfiguration \u6ce8\u89e3\u5b9e\u73b0\u7684\u3002\u8fd9\u4e2a\u6ce8 […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-8480","post","type-post","status-publish","format-standard","hentry","category-springboot"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=8480"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8480\/revisions"}],"predecessor-version":[{"id":16620,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8480\/revisions\/16620"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=8480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=8480"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=8480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}