{"id":203168,"date":"2025-05-22T08:59:53","date_gmt":"2025-05-22T00:59:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203168\/"},"modified":"2025-05-22T08:59:53","modified_gmt":"2025-05-22T00:59:53","slug":"%e4%bd%bf%e7%94%a8%e7%8b%ac%e7%89%b9%e7%9a%84%e9%85%8d%e7%bd%ae%e8%bd%bb%e6%9d%be%e8%ae%be%e7%bd%ae%e5%a4%9a%e4%b8%aa-spring-bean","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203168\/","title":{"rendered":"\u4f7f\u7528\u72ec\u7279\u7684\u914d\u7f6e\u8f7b\u677e\u8bbe\u7f6e\u591a\u4e2a Spring Bean"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f7f\u7528\u72ec\u7279\u7684\u914d\u7f6e\u8f7b\u677e\u8bbe\u7f6e\u591a\u4e2a Spring Bean<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u4f7f\u7528\u72ec\u7279\u7684\u914d\u7f6e\u8f7b\u677e\u8bbe\u7f6e\u591a\u4e2a Spring Bean\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

<\/p>\n

\u538c\u5026\u4e86\u91cd\u590d\u7684 spring bean \u6ce8\u518c\uff1f\u4f60\u5e76\u4e0d\u5b64\u5355\uff01<\/strong><\/p>\n

\u662f\u5426\u66fe\u56e0 spring boot \u4e2d\u91cd\u590d\u7684 bean \u5b9a\u4e49\u800c\u9677\u5165\u56f0\u5883\uff1f\u4f60\u5e76\u4e0d\u5b64\u5355\uff01\u7ba1\u7406\u5177\u6709\u4e0d\u540c\u914d\u7f6e\u7684\u540c\u4e00\u7c7b\u7684\u591a\u4e2a bean \u53ef\u80fd\u4f1a\u53d8\u5f97\u4e4f\u5473\u4e14\u6df7\u4e71\u3002\u5047\u8bbe\u60a8\u9700\u8981\u8fd9\u6837\u7684\u4e1c\u897f\uff1a<\/p>\n

@bean\nmyservice beana() {\n    \/\/ set configuration for bean a\n    configuration a = new...\n    a.seturl(.....)\n    return new myservice(a);\n}\n\n@bean\nmyservice beanb() {\n    \/\/ set configuration for bean a\n    configuration b = new...\n    b.seturl(.....)\n    return new myservice(b);\n}\n<\/pre>\n
\u8fd9\u6bb5\u4ee3\u7801\u5e76\u4e0d\u590d\u6742\uff0c\u4f46\u5b83\u5f88\u5feb\u5c31\u4f1a\u53d8\u5f97\u91cd\u590d\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u591a\u4e2a\u76f8\u540c\u7c7b\u578b\u7684 bean \u65f6\u3002\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4e0d\u540c\u7684\u8bbe\u7f6e\u6ce8\u518c\u591a\u4e2a\u5b9e\u4f8b\uff0c\u800c\u65e0\u9700\u5197\u4f59\u4ee3\u7801\u3002<\/p>\n
\u8fd9\u4e0e\u4e3a\u63a5\u53e3\u7684\u6bcf\u4e2a\u5b9e\u73b0\u62e5\u6709\u552f\u4e00\u7684 bean \u4e0d\u540c\u3002\u76f8\u53cd\uff0c\u6211\u4eec\u6b63\u5728\u8ba8\u8bba\u5efa\u7acb\u4e00\u4e2a\u5177\u6709\u53d8\u5316\u7684\u7c7b\u3002\u4f8b\u5982\uff0c\u8003\u8651\u4e00\u4e2a\u8fde\u63a5\u5230\u591a\u4e2a\u6570\u636e\u5e93\uff08\u4f8b\u5982\u5ba2\u6237\u3001\u62a5\u544a\u548c\u5907\u4efd\uff09\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u6bcf\u4e2a\u8fde\u63a5\u90fd\u9700\u8981\u81ea\u5df1\u7684\u914d\u7f6e\uff0c\u8fd9\u4f7f\u5f97\u7ba1\u7406\u53d8\u5f97\u6df7\u4e71\u800c\u5177\u6709\u6311\u6218\u6027\u3002\u4f60\u6700\u7ec8\u53ef\u80fd\u4f1a\u5199\u51fa\u8fd9\u6837\u7684\u4e1c\u897f\uff1a<\/p>\n
@bean\ndatabaseservice primarydatabaseservice() {\n    return new databaseservice(\"db-url-primary\");\n}\n\n@bean\ndatabaseservice reportdatabaseservice() {\n    return new databaseservice(\"db-url-report\");\n}\n<\/pre>\n
\u62e5\u6709\u66f4\u7b80\u5355\u7684\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u663e\u7740\u7b80\u5316\u60a8\u7684\u914d\u7f6e\uff0c\u8ba9\u60a8\u66f4\u52a0\u4e13\u6ce8\u4e8e\u5e94\u7528\u7a0b\u5e8f\u903b\u8f91\u3002\u8f93\u5165 multibeanconfig \u2014 \u6211\u6784\u5efa\u7684\u4e00\u4e2a\u5c0f\u578b\u5e93\uff0c\u7528\u4e8e\u5e2e\u52a9\u7ba1\u7406\u540c\u4e00\u4e2a spring bean \u7684\u591a\u4e2a\u914d\u7f6e\u3002<\/p>\n
 \u4ecb\u7ecd multibeanconfig <\/h2>\n
multibeanconfig \u901a\u8fc7\u5355\u72ec\u7684\u914d\u7f6e\u7b80\u5316\u4e86 bean \u7684\u591a\u4e2a\u5b9e\u4f8b\u7684\u8bbe\u7f6e\u3002\u6709\u4e86\u5b83\uff0c\u60a8\u53ef\u4ee5\uff1a<\/p>\n
    \n
  • \u51cf\u5c11\u91cd\u590d\u4ee3\u7801<\/li>\n
  • \u96c6\u4e2d\u914d\u7f6e\u7ba1\u7406<\/li>\n
  • \u4fdd\u6301\u4ee3\u7801\u5e93\u6574\u6d01\u6709\u5e8f<\/li>\n<\/ul>\n
     \u6838\u5fc3\u7279\u70b9 <\/h2>\n
      \n
    •  \u591a bean \u8bbe\u7f6e<\/strong>\uff1a\u5b9a\u4e49\u5355\u4e2a\u7c7b\u7684\u591a\u4e2a\u5b9e\u4f8b\u3002<\/li>\n
    •  \u81ea\u5b9a\u4e49\u914d\u7f6e<\/strong>\uff1a\u901a\u8fc7\u5e94\u7528\u7a0b\u5e8f\u5c5e\u6027\u63a7\u5236\u6bcf\u4e2a\u5b9e\u4f8b\u7684\u8bbe\u7f6e\u3002<\/li>\n
    •  \u9ed8\u8ba4\u503c<\/strong>\uff1a\u5982\u679c\u7f3a\u5c11\u7279\u5b9a\u914d\u7f6e\uff0c\u81ea\u52a8\u5e94\u7528\u9ed8\u8ba4\u503c\u3002<\/li>\n
    •  \u81ea\u52a8\u6ce8\u5165<\/strong>\uff1a\u8f7b\u677e\u4f7f\u7528@autowired\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3002<\/li>\n<\/ul>\n
       \u5206\u6b65\u6307\u5357 <\/h2>\n
       1. \u5c06 multibeanconfig \u6dfb\u52a0\u5230\u60a8\u7684\u9879\u76ee\u4e2d <\/h3>\n
      \u5728 pom.xml \u4e2d\u5305\u542b\u4f9d\u8d56\u9879\uff1a<\/p>\n
      <dependency>\n    <groupid>io.github.olufemithompson<\/groupid>\n    <artifactid>multibeanconfig<\/artifactid>\n    <version>0.0.3<\/version>\n<\/dependency>\n<\/pre>\n
       2. \u8bbe\u7f6ebean\u7c7b <\/h3>\n
      \u4f7f\u7528 @multibean \u6807\u8bb0\u60a8\u7684\u7c7b\uff0c\u4f7f\u5176\u7b26\u5408\u591a\u4e2a\u5b9e\u4f8b\u7684\u6761\u4ef6\uff1a<\/p>\n
      @multibean\npublic class databaseservice {\n    \/\/ your service logic\n}\n<\/pre>\n
       3. \u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u5b9a\u4e49 bean <\/h3>\n
      \u5728\u5c5e\u6027\u6216 yaml \u6587\u4ef6\u4e2d\u5b9a\u4e49\u552f\u4e00\u7248\u672c\uff1a<\/p>\n
      multibean:\n  primary-database-service:\n    class: databaseservice\n  report-database-service:\n    class: databaseservice\n<\/pre>\n
      \u8fd9\u4f1a\u4f7f\u7528\u9ed8\u8ba4\u914d\u7f6e\u6ce8\u518cprimarydatabaseservice \u548creportdatabaseservice bean\u3002 multibeanconfig \u81ea\u52a8\u5c06\u540d\u79f0\u4ece\u77ed\u6a2a\u7ebf\u547d\u540d\u6cd5\u8f6c\u6362\u4e3a\u9a7c\u5cf0\u547d\u540d\u6cd5\u3002<\/p>\n
       \u81ea\u5b9a\u4e49\u6bcf\u4e2a bean \u7684\u914d\u7f6e <\/h2>\n
      \u8981\u5206\u914d\u5355\u72ec\u7684\u8bbe\u7f6e\uff0c\u8bf7\u5c06\u5c5e\u6027\u76f4\u63a5\u6dfb\u52a0\u5230\u6bcf\u4e2a bean \u7684\u914d\u7f6e\u4e2d\u3002\u8fd9\u662f\u6bcf\u4e2a\u5b9e\u4f8b\u8fde\u63a5\u5230\u4e0d\u540c\u6570\u636e\u5e93\u7684\u793a\u4f8b\uff1a<\/p>\n
      @multibean\npublic class databaseservice {\n   @value(\"${database-config.connection-url}\")\n   private string connectionurl;\n}\n<\/pre>\n
      \u5728application.yml\u4e2d\u914d\u7f6e\u6bcf\u4e2a\u5b9e\u4f8b\uff1a<\/p>\n
      database-config:\n  connection-url: 'jdbc:h2:default-url'\n\nmultibean:\n  primary-database-service:\n    class: databaseservice\n    database-config:\n      connection-url: 'jdbc:mysql:primary-db-url'\n  report-database-service:\n    class: databaseservice\n    database-config:\n      connection-url: 'jdbc:postgresql:report-db-url'\n\n<\/pre>\n
      \u6b64\u8bbe\u7f6e\u4e3a\u6bcf\u4e2a bean \u63d0\u4f9b\u4e86\u552f\u4e00\u7684\u8fde\u63a5 url\u3002\u5171\u4eab\u8bbe\u7f6e\u4e5f\u53ef\u4ee5\u5728\u5e38\u89c4\u90e8\u5206\u4e2d\u5b9a\u4e49\uff0c\u4ece\u800c\u4f7f\u914d\u7f6e\u9ad8\u6548\u5e76\u51cf\u5c11\u5197\u4f59\u3002<\/p>\n
       \u6ce8\u5165\u914d\u7f6e\u7684\u66ff\u4ee3\u65b9\u6cd5 <\/h2>\n
      \u60a8\u4e0d\u5fc5\u4ec5\u4ec5\u4f9d\u8d56@value\u6765\u6ce8\u5165\u914d\u7f6e\u3002 spring \u7684 @configurationproperties \u5141\u8bb8\u5c06\u5c5e\u6027\u5c01\u88c5\u5728\u914d\u7f6e\u7c7b\u4e2d\uff1a<\/p>\n
      @configurationproperties(\"database-config\")\n@configuration\npublic class databaseconfig {\n    private string connectionurl;\n    private int connectiontimeout;\n    \/\/ getters and setters\n}\n<\/pre>\n
      \u7136\u540e\uff0c\u76f4\u63a5\u6ce8\u5165databaseconfig\uff1a<\/p>\n
      @multibean\npublic class databaseservice {\n   private final databaseconfig databaseconfig;\n   public databaseservice(databaseconfig databaseconfig) {\n       this.databaseconfig = databaseconfig;\n   }\n}\n<\/pre>\n
       \u4f7f\u7528\u914d\u7f6e\u7684 bean <\/h2>\n
      \u4f7f\u7528 multibeanconfig \uff0c\u50cf\u4f7f\u7528\u4efb\u4f55 spring \u4f9d\u8d56\u9879\u4e00\u6837\u6ce8\u5165\u60a8\u72ec\u7279\u914d\u7f6e\u7684 bean\uff1a<\/p>\n
      @Service\npublic class ApplicationService {\n   private final DatabaseService primaryDatabaseService;\n   private final DatabaseService reportDatabaseService;\n\n   public ApplicationService(DatabaseService primaryDatabaseService, DatabaseService reportDatabaseService) {\n       this.primaryDatabaseService = primaryDatabaseService;\n       this.reportDatabaseService = reportDatabaseService;\n   }\n}\n<\/pre>\n
       \u6700\u540e\u7684\u60f3\u6cd5 <\/h2>\n
      multibeanconfig \u7b80\u5316\u4e86 spring boot \u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684 bean \u7ba1\u7406\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u529f\u80fd\u6807\u5fd7\u3001\u6570\u636e\u6e90\u6216\u4e0d\u540c\u7684 api \u8fde\u63a5\u65f6\u3002\u5b83\u51cf\u5c11\u4e86\u5197\u4f59\uff0c\u4fdd\u6301\u4ee3\u7801\u6574\u6d01\uff0c\u5e76\u589e\u5f3a\u4e86\u53ef\u7ef4\u62a4\u6027\u3002\u5c1d\u8bd5\u4e00\u4e0b\uff0c\u8ba9\u6211\u77e5\u9053\u5b83\u5982\u4f55\u9002\u7528\u4e8e\u60a8\u7684\u9879\u76ee\uff01<\/p>\n
      \u4eca\u5929\u5173\u4e8e\u300a\u4f7f\u7528\u72ec\u7279\u7684\u914d\u7f6e\u8f7b\u677e\u8bbe\u7f6e\u591a\u4e2a Spring Bean\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n
            \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u4f7f\u7528\u72ec\u7279\u7684\u914d\u7f6e\u8f7b\u677e\u8bbe\u7f6e\u591a\u4e2a Sp...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203168","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203168"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203168\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}