{"id":12178,"date":"2023-11-28T22:45:58","date_gmt":"2023-11-28T14:45:58","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12178"},"modified":"2023-12-11T15:41:36","modified_gmt":"2023-12-11T07:41:36","slug":"spring-de-ru-he-li-jieioc-hedi","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-de-ru-he-li-jieioc-hedi\/","title":{"rendered":"Spring\u7684\u5982\u4f55\u7406\u89e3IoC\u548cDI?"},"content":{"rendered":"

IoC\uff08Inversion of Control\uff0c\u63a7\u5236\u53cd\u8f6c\uff09\u548c DI\uff08Dependency Injection\uff0c\u4f9d\u8d56\u6ce8\u5165\uff09\u662fSpring\u6846\u67b6\u7684\u4e24\u4e2a\u6838\u5fc3\u6982\u5ff5\uff0c\u5b83\u4eec\u5171\u540c\u6784\u6210\u4e86Spring\u6846\u67b6\u7684\u57fa\u7840\u67b6\u6784\u3002<\/p>\n

<\/span><\/a>\u63a7\u5236\u53cd\u8f6c (IoC)\uff1a<\/h3>\n

\u63a7\u5236\u53cd\u8f6c\u6307\u7684\u662f\u5c06\u7a0b\u5e8f\u7684\u63a7\u5236\u6743\u4ece\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u4e2d\u7ffb\u8f6c\u5230\u5916\u90e8\u5bb9\u5668\uff08\u5982Spring\u5bb9\u5668\uff09\u4e2d\u3002\u5728\u4f20\u7edf\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u8ba1\u4e2d\uff0c\u901a\u5e38\u7531\u7a0b\u5e8f\u4ee3\u7801\u4e3b\u52a8\u521b\u5efa\u548c\u63a7\u5236\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u751f\u547d\u5468\u671f\u3002\u800c\u5728IoC\u4e2d\uff0c\u8fd9\u4e00\u8fc7\u7a0b\u7684\u63a7\u5236\u88ab\u7ffb\u8f6c\u5230\u4e86\u5bb9\u5668\u4e2d\uff0c\u5bb9\u5668\u8d1f\u8d23\u7ba1\u7406\u548c\u63a7\u5236\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u751f\u547d\u5468\u671f\u3002<\/p>\n

\u5728Spring\u4e2d\uff0cIoC\u7684\u5b9e\u73b0\u4e3b\u8981\u662f\u901a\u8fc7\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u6765\u5b9e\u73b0\u7684\u3002Spring\u5bb9\u5668\u8d1f\u8d23\u521b\u5efa\u3001\u7ba1\u7406\u548c\u6ce8\u5165Bean\u5bf9\u8c61\uff0c\u4f7f\u5f97\u5f00\u53d1\u8005\u53ea\u9700\u5173\u6ce8\u4e1a\u52a1\u903b\u8f91\uff0c\u800c\u4e0d\u7528\u5173\u5fc3\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n

<\/span><\/a>\u4f9d\u8d56\u6ce8\u5165 (DI)\uff1a<\/h3>\n

\u4f9d\u8d56\u6ce8\u5165\u662fIoC\u7684\u4e00\u79cd\u5177\u4f53\u5b9e\u73b0\u65b9\u5f0f\u3002\u5b83\u6307\u7684\u662f\u901a\u8fc7\u5916\u90e8\u5bb9\u5668\uff08\u901a\u5e38\u662fSpring\u5bb9\u5668\uff09\u5c06\u4e00\u4e2a\u5bf9\u8c61\u6240\u4f9d\u8d56\u7684\u5176\u4ed6\u5bf9\u8c61\u6ce8\u5165\u5230\u8be5\u5bf9\u8c61\u4e2d\u3002\u4f9d\u8d56\u6ce8\u5165\u7684\u76ee\u7684\u662f\u89e3\u8026\u5bf9\u8c61\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u4f7f\u5f97\u7cfb\u7edf\u66f4\u52a0\u7075\u6d3b\u3001\u53ef\u7ef4\u62a4\u548c\u53ef\u6d4b\u8bd5\u3002<\/p>\n

\u5728Spring\u4e2d\uff0c\u4f9d\u8d56\u6ce8\u5165\u6709\u4e09\u79cd\u4e3b\u8981\u65b9\u5f0f\uff1a<\/p>\n

    \n
  1. \n\u6784\u9020\u5668\u6ce8\u5165\uff08Constructor Injection\uff09\uff1a<\/strong><\/p>\n
      \n
    • \u901a\u8fc7\u6784\u9020\u51fd\u6570\u5c06\u4f9d\u8d56\u6ce8\u5165\u5230\u5bf9\u8c61\u4e2d\u3002\u5728Bean\u7684\u5b9a\u4e49\u4e2d\uff0c\u901a\u8fc7\u6784\u9020\u51fd\u6570\u7684\u53c2\u6570\u6765\u6307\u5b9a\u4f9d\u8d56\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n
      public class MyService {\n    private final MyRepository repository;\n\n    public MyService(MyRepository repository) {\n        this.repository = repository;\n    }\n}\n<\/code><\/pre>\n<\/li>\n
    • \n\u5c5e\u6027\u6ce8\u5165\uff08Setter Injection\uff09\uff1a<\/strong><\/p>\n
        \n
      • \u901a\u8fc7Setter\u65b9\u6cd5\u5c06\u4f9d\u8d56\u6ce8\u5165\u5230\u5bf9\u8c61\u4e2d\u3002\u5728Bean\u7684\u5b9a\u4e49\u4e2d\uff0c\u901a\u8fc7Setter\u65b9\u6cd5\u6765\u8bbe\u7f6e\u4f9d\u8d56\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n
        public class MyService {\n    private MyRepository repository;\n\n    public void setRepository(MyRepository repository) {\n        this.repository = repository;\n    }\n}\n<\/code><\/pre>\n<\/li>\n
      • \n\u65b9\u6cd5\u6ce8\u5165\uff08Method Injection\uff09\uff1a<\/strong><\/p>\n
          \n
        • \u901a\u8fc7\u666e\u901a\u65b9\u6cd5\u5c06\u4f9d\u8d56\u6ce8\u5165\u5230\u5bf9\u8c61\u4e2d\u3002\u5728Bean\u7684\u5b9a\u4e49\u4e2d\uff0c\u901a\u8fc7\u666e\u901a\u65b9\u6cd5\u6765\u8bbe\u7f6e\u4f9d\u8d56\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n
          public class MyService {\n    private MyRepository repository;\n\n    public void injectRepository(MyRepository repository) {\n        this.repository = repository;\n    }\n}\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
          \u603b\u4f53\u800c\u8a00\uff0cIoC\u548cDI\u901a\u8fc7\u5c06\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u4f9d\u8d56\u5173\u7cfb\u7684\u7ba1\u7406\u4ea4\u7ed9\u5bb9\u5668\uff0c\u5b9e\u73b0\u4e86\u4ee3\u7801\u7684\u89e3\u8026\u3001\u7075\u6d3b\u6027\u7684\u63d0\u9ad8\u548c\u53ef\u7ef4\u62a4\u6027\u7684\u589e\u5f3a\u3002Spring\u6846\u67b6\u662f\u4e00\u4e2aIoC\u5bb9\u5668\uff0c\u901a\u8fc7IoC\u548cDI\u5b9e\u73b0\u4e86\u9762\u5411\u63a5\u53e3\u7f16\u7a0b\u3001\u677e\u8026\u5408\u548c\u7ec4\u4ef6\u5316\u5f00\u53d1\uff0c\u4f7f\u5f97\u5e94\u7528\u7a0b\u5e8f\u66f4\u5bb9\u6613\u6269\u5c55\u3001\u6d4b\u8bd5\u548c\u7ef4\u62a4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          IoC\uff08Inversion of Control\uff0c\u63a7\u5236\u53cd\u8f6c\uff09\u548c DI\uff08Dependency Injection […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-12178","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12178","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=12178"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12178\/revisions"}],"predecessor-version":[{"id":47865,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12178\/revisions\/47865"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12178"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}