{"id":1233,"date":"2022-12-05T15:39:11","date_gmt":"2022-12-05T07:39:11","guid":{"rendered":"https:\/\/usei.cn\/?p=1233"},"modified":"2022-12-05T15:39:13","modified_gmt":"2022-12-05T07:39:13","slug":"configuration-%e6%b3%a8%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/usei.cn\/index.php\/2022\/12\/05\/configuration-%e6%b3%a8%e8%a7%a3\/","title":{"rendered":"@Configuration \u6ce8\u89e3"},"content":{"rendered":"\n

@Configuration\u6ce8\u89e3\u7684\u4f5c\u7528\uff1a\u58f0\u660e\u4e00\u4e2a\u7c7b\u4e3a\u914d\u7f6e\u7c7b\uff0c\u7528\u4e8e\u53d6\u4ee3bean.xml<\/a>\u914d\u7f6e\u6587\u4ef6\u6ce8\u518cbean\u5bf9\u8c61\u3002<\/p>\n\n\n\n

@Target({ElementType.TYPE})\r\n@Retention(RetentionPolicy.RUNTIME)\r\n@Documented\r\n@Component\r\npublic @interface Configuration {\r\n    @AliasFor(\r\n        annotation = Component.class\r\n    )\r\n    String value() default \"\";\r\n\r\n    boolean proxyBeanMethods() default true;\r\n}\r\n<\/code><\/pre>\n\n\n\n
    \n
  • \u5e95\u5c42\u4ee3\u7801\u5c31\u4e24\u4e2a\u5c5e\u6027\uff0c\u4e00\u4e2a\u7528\u4e8e\u58f0\u660e\u914d\u7f6e\u7c7b\u7684\u540d\u79f0\uff0c\u4e00\u4e2a\u7528\u4e8e\u58f0\u660e\u662f\u5426\u662f\u4ee3\u7406\u5bf9\u8c61\u65b9\u6cd5\uff08\u91cd\u70b9\uff09\u3002\n
      <\/ul>\n<\/li>\n\n\n\n
    • \u7531\u4e8e\u6709@Component\u6ce8\u89e3\u7684\u52a0\u6301\uff0c\u90a3\u4e48\u88ab\u58f0\u660e\u7684\u914d\u7f6e\u7c7b\u672c\u8eab\u4e5f\u662f\u4e00\u4e2a\u7ec4\u4ef6\uff01<\/li>\n<\/ul>\n\n\n\n
      \u57fa\u7840\u4f7f\u7528<\/h2>\n\n\n\n
      @Configuration\u6ce8\u89e3\u5e38\u5e38\u4e00\u8d77\u642d\u914d\u4f7f\u7528\u7684\u6ce8\u89e3\u6709@Bean\u3001@Scope\u3001@Lazy\u4e09\u4e2a\u6bd4\u8f83\u5e38\u89c1\uff1a<\/p>\n\n\n\n
      @Bean\uff1a\u7b49\u4ef7\u4e8eSpring\u4e2d\u7684bean\u6807\u7b7e\u7528\u4e8e\u6ce8\u518cbean\u5bf9\u8c61\u7684\uff0c\u5185\u90e8\u6709\u4e00\u4e9b\u521d\u59cb\u5316\u3001\u9500\u6bc1\u7684\u5c5e\u6027\u2026<\/p>\n\n\n\n
      @Scope\uff1a\u7528\u4e8e\u58f0\u660e\u8be5bean\u7684\u4f5c\u7528\u57df\uff0c\u4f5c\u7528\u57df\u6709singleton\u3001prototype\u3001request\u3001session\u3002<\/p>\n\n\n\n
      @Lazy\uff1a\u6807\u8bb0\u8be5bean\u662f\u5426\u5f00\u542f\u61d2\u52a0\u8f7d\u3002<\/p>\n\n\n\n
      \u8fd9\u91cc\u51c6\u5907User\u548cDog\u4e24\u4e2a\u7c7b<\/p>\n\n\n\n
      @Data\r\n@AllArgsConstructor\r\n@NoArgsConstructor\r\npublic class User {\r\n    private String name;\r\n    private int age;\r\n    private Dog dog;\r\n}\n@Data\r\n@NoArgsConstructor\r\n@AllArgsConstructor\r\npublic class Dog {\r\n    private String name;\r\n    private int age;\r\n}\r<\/code><\/pre>\n\n\n\n
      2.1\u3001@Bean\u6ce8\u89e3<\/p>\n\n\n\n
      \u5148\u6765\u770b\u770b\u5982\u4f55\u58f0\u660e\u914d\u7f6e\u4e00\u4e2abean\u5bf9\u8c61\u7684\u6ce8\u518c<\/p>\n\n\n\n
      @Configuration\r\npublic class MyConfig {\r\n\r\n    @Bean(\"user\")\r\n    public User getUser(){\r\n    \tSystem.out.println(\"User\u5bf9\u8c61\u8fdb\u884c\u521b\u5efa!\");\r\n        return new User(\"\u7528\u6237\", 22, getDog());\r\n    }\r\n\r\n    @Bean(\"dog\")\r\n    public Dog getDog(){\r\n    \tSystem.out.println(\"Dog\u5bf9\u8c61\u8fdb\u884c\u521b\u5efa!\");\r\n        return new Dog(\"\u91d1\u6bdb\", 3);\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
        \n
      • \u8fd9\u6837\u5c31\u58f0\u660e\u914d\u7f6e\u4e86\u4e24\u4e2abean\uff0c\u5728Spring\u4e2d\u76f8\u5f53\u4e8e\u6ce8\u518c\u5230xml\u914d\u7f6e\u6587\u4ef6\u4e2d<\/li>\n\n\n\n
      • \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u4ee5\u997f\u6c49\u5355\u4f8b<\/strong>\u7684\u5f62\u5f0f\u8fdb\u884c\u521b\u5efa\uff0c\u5373IOC\u5bb9\u5668\u521b\u5efa\u65f6\u7acb\u5373\u521b\u5efa\u8fd9\u4e24\u4e2abean\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
        @Configuration\u6ce8\u89e3\u7684\u4f5c\u7528\uff1a\u58f0\u660e\u4e00\u4e2a\u7c7b\u4e3a\u914d\u7f6e\u7c7b\uff0c\u7528\u4e8e\u53d6\u4ee3bean.xml\u914d\u7f6e\u6587\u4ef6\u6ce8\u518cbean\u5bf9\u8c61\u3002 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,75],"tags":[],"class_list":["post-1233","post","type-post","status-publish","format-standard","hentry","category-java","category-springboot"],"_links":{"self":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1233"}],"version-history":[{"count":3,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1233\/revisions"}],"predecessor-version":[{"id":1236,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1233\/revisions\/1236"}],"wp:attachment":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}