{"id":11793,"date":"2023-11-28T22:34:09","date_gmt":"2023-11-28T14:34:09","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11793"},"modified":"2023-12-11T14:24:16","modified_gmt":"2023-12-11T06:24:16","slug":"spring-zhong-zi-dong-zhuang-pei-you-na-xie-ju-xian","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhong-zi-dong-zhuang-pei-you-na-xie-ju-xian\/","title":{"rendered":"Spring\u4e2d\u81ea\u52a8\u88c5\u914d\u6709\u54ea\u4e9b\u5c40\u9650\u6027\uff1f"},"content":{"rendered":"

\u5c3d\u7ba1Spring\u7684\u81ea\u52a8\u88c5\u914d\uff08autowiring\uff09\u662f\u4e00\u79cd\u65b9\u4fbf\u7684\u673a\u5236\uff0c\u80fd\u591f\u51cf\u5c11\u624b\u52a8\u914d\u7f6e\u7684\u5de5\u4f5c\uff0c\u4f46\u5b83\u4e5f\u5b58\u5728\u4e00\u4e9b\u5c40\u9650\u6027\u548c\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\uff1a<\/p>\n

    \n
  1. \n\u6b67\u4e49\u6027\uff08Ambiguity\uff09\uff1a<\/strong><\/p>\n
      \n
    • \u5f53\u5bb9\u5668\u4e2d\u5b58\u5728\u591a\u4e2a\u7c7b\u578b\u5339\u914d\u7684\u5019\u9009Bean\u65f6\uff0c\u81ea\u52a8\u88c5\u914d\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6b67\u4e49\u6027\uff0c\u4ece\u800c\u5bfc\u81f4\u5bb9\u5668\u65e0\u6cd5\u786e\u5b9a\u8981\u6ce8\u5165\u54ea\u4e2aBean\u3002\u4e3a\u4e86\u89e3\u51b3\u6b67\u4e49\u6027\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528@Qualifier<\/code>\u6ce8\u89e3\u6216\u5728\u5b57\u6bb5\/\u65b9\u6cd5\u53c2\u6570\u4e0a\u4f7f\u7528@Autowired<\/code>\u7684required<\/code>\u5c5e\u6027\u4e3afalse<\/code>\u6765\u660e\u786e\u6307\u5b9a\u8981\u6ce8\u5165\u7684Bean\u3002<\/li>\n<\/ul>\n
      @Autowired\n@Qualifier("specificBean")\nprivate MyInterface myBean;\n<\/code><\/pre>\n<\/li>\n
    • \n\u7f3a\u4e4f\u660e\u786e\u6027\uff08Lack of Explicitness\uff09\uff1a<\/strong><\/p>\n
        \n
      • \u81ea\u52a8\u88c5\u914d\u53ef\u80fd\u4f7f\u5f97\u4ee3\u7801\u7f3a\u4e4f\u660e\u786e\u6027\uff0c\u964d\u4f4e\u4e86\u5bf9\u7ec4\u4ef6\u4f9d\u8d56\u5173\u7cfb\u7684\u53ef\u8bfb\u6027\u3002\u663e\u5f0f\u5730\u8fdb\u884c\u624b\u52a8\u88c5\u914d\u548c\u914d\u7f6e\uff0c\u5c3d\u7ba1\u53ef\u80fd\u66f4\u7e41\u7410\uff0c\u4f46\u80fd\u591f\u63d0\u9ad8\u4ee3\u7801\u7684\u6e05\u6670\u5ea6\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n\u88c5\u914d\u987a\u5e8f\uff08Autowiring Order\uff09\uff1a<\/strong><\/p>\n
          \n
        • \u5f53\u4f7f\u7528\u81ea\u52a8\u88c5\u914d\u65f6\uff0c\u5bb9\u5668\u4f1a\u6309\u7167\u4e00\u5b9a\u7684\u987a\u5e8f\u5c1d\u8bd5\u6ce8\u5165\u4f9d\u8d56\uff0c\u4f8b\u5982\u6839\u636e\u5c5e\u6027\u7684\u540d\u79f0\u3001\u7c7b\u578b\u7b49\u3002\u8fd9\u53ef\u80fd\u5bfc\u81f4\u4f9d\u8d56\u7684\u6ce8\u5165\u987a\u5e8f\u4e0d\u7b26\u5408\u9884\u671f\uff0c\u7279\u522b\u662f\u5f53\u5b58\u5728\u591a\u4e2a\u5339\u914d\u7684\u5019\u9009Bean\u65f6\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n\u4e0d\u9002\u7528\u4e8e\u590d\u6742\u573a\u666f\uff1a<\/strong><\/p>\n
            \n
          • \u5728\u67d0\u4e9b\u590d\u6742\u7684\u5e94\u7528\u573a\u666f\u4e2d\uff0c\u81ea\u52a8\u88c5\u914d\u53ef\u80fd\u65e0\u6cd5\u6ee1\u8db3\u7279\u5b9a\u7684\u9700\u6c42\uff0c\u4f8b\u5982\u9700\u8981\u52a8\u6001\u8c03\u6574\u4f9d\u8d56\u7684\u60c5\u51b5\u6216\u9700\u8981\u66f4\u7cbe\u7ec6\u7684\u63a7\u5236\u4f9d\u8d56\u5173\u7cfb\u3002<\/li>\n<\/ul>\n<\/li>\n
          • \n\u4e0d\u652f\u6301\u5faa\u73af\u4f9d\u8d56\uff1a<\/strong><\/p>\n
              \n
            • Spring\u7684\u81ea\u52a8\u88c5\u914d\u4e0d\u652f\u6301\u5faa\u73af\u4f9d\u8d56\uff0c\u5373A\u4f9d\u8d56B\uff0cB\u4f9d\u8d56A\u7684\u60c5\u51b5\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u901a\u8fc7\u4f7f\u7528@Lazy<\/code>\u6ce8\u89e3\u6216\u8005\u5c06\u4f9d\u8d56\u6ce8\u5165\u5230\u65b9\u6cd5\u53c2\u6570\u4e2d\u6765\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u7684\u95ee\u9898\u3002<\/li>\n<\/ul>\n
              @Autowired\n@Lazy\nprivate MyBean myBean;\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
              \u603b\u4f53\u6765\u8bf4\uff0c\u81ea\u52a8\u88c5\u914d\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\u662f\u975e\u5e38\u6709\u7528\u7684\uff0c\u53ef\u4ee5\u51cf\u5c11\u5f00\u53d1\u8005\u7684\u5de5\u4f5c\u91cf\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u51b5\u4e0b\uff0c\u7279\u522b\u662f\u5728\u9879\u76ee\u8f83\u5927\u6216\u8005\u5bf9\u7ec4\u4ef6\u4f9d\u8d56\u5173\u7cfb\u6709\u66f4\u4e25\u683c\u8981\u6c42\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u7ed3\u5408\u624b\u52a8\u88c5\u914d\uff0c\u4ee5\u66f4\u597d\u5730\u7ba1\u7406\u548c\u63a7\u5236Bean\u7684\u88c5\u914d\u8fc7\u7a0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
              \u5c3d\u7ba1Spring\u7684\u81ea\u52a8\u88c5\u914d\uff08autowiring\uff09\u662f\u4e00\u79cd\u65b9\u4fbf\u7684\u673a\u5236\uff0c\u80fd\u591f\u51cf\u5c11\u624b\u52a8\u914d\u7f6e\u7684\u5de5\u4f5c\uff0c\u4f46\u5b83\u4e5f\u5b58\u5728\u4e00\u4e9b\u5c40\u9650 […]<\/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-11793","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11793","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=11793"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11793\/revisions"}],"predecessor-version":[{"id":37184,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11793\/revisions\/37184"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11793"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}