{"id":4141,"date":"2024-05-23T08:01:28","date_gmt":"2024-05-23T00:01:28","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9a%e8%a3%85%e9%a5%b0%e5%99%a8%e6%a8%a1%e5%bc%8f%e5%92%8c%e4%bb%a3%e7%90%86%e6%a8%a1%e5%bc%8f%e4%b9%8b%e9%97%b4%e7%9a%84%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88\/"},"modified":"2024-08-02T17:02:05","modified_gmt":"2024-08-02T09:02:05","slug":"%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9a%e8%a3%85%e9%a5%b0%e5%99%a8%e6%a8%a1%e5%bc%8f%e5%92%8c%e4%bb%a3%e7%90%86%e6%a8%a1%e5%bc%8f%e4%b9%8b%e9%97%b4%e7%9a%84%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9a%e8%a3%85%e9%a5%b0%e5%99%a8%e6%a8%a1%e5%bc%8f%e5%92%8c%e4%bb%a3%e7%90%86%e6%a8%a1%e5%bc%8f%e4%b9%8b%e9%97%b4%e7%9a%84%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88\/","title":{"rendered":"\u9762\u8bd5\u5b98\uff1a\u88c5\u9970\u5668\u6a21\u5f0f\u548c\u4ee3\u7406\u6a21\u5f0f\u4e4b\u95f4\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f\u5e76\u8bf4\u660e\u5404\u81ea\u9002\u5408\u7684\u573a\u666f"},"content":{"rendered":"
\n

\u88c5\u9970\u5668\u6a21\u5f0f<\/span><\/strong>\uff08Decorator Pattern\uff09\u548c\u4ee3\u7406\u6a21\u5f0f<\/strong>\uff08Proxy Pattern\uff09\u90fd\u662f\u7ed3\u6784\u578b\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5b83\u4eec\u5728\u7ed3\u6784\u4e0a\u770b\u8d77\u6765\u76f8\u4f3c\uff0c\u56e0\u4e3a\u4e24\u8005\u90fd\u662f\u901a\u8fc7\u5305\u88c5\u4e00\u4e2a\u7c7b\u6765\u6269\u5c55\u5176\u529f\u80fd\u3002\u4f46\u5b83\u4eec\u7684\u610f\u56fe\u3001\u7528\u9014\u548c\u5b9e\u73b0\u65b9\u5f0f\u5b58\u5728\u660e\u663e\u5dee\u5f02\u3002<\/span><\/p>\n

\u88c5\u9970\u5668\u6a21\u5f0f\uff1a<\/span><\/strong><\/h3>\n

\u76ee\u7684\uff1a<\/span><\/strong><\/p>\n

    \n
  • \u4e3b\u8981\u7528\u4e8e\u6dfb\u52a0\u65b0\u7684\u529f\u80fd\u5230\u5bf9\u8c61\uff0c\u800c\u4e0d\u6539\u53d8\u5176\u63a5\u53e3\u3002<\/span><\/li>\n
  • \u901a\u8fc7\u6dfb\u52a0\u201c\u88c5\u9970\u201d\u7684\u65b9\u5f0f\u52a8\u6001\u5730\u7ed9\u5bf9\u8c61\u9644\u52a0\u989d\u5916\u7684\u804c\u8d23\u3002<\/span><\/li>\n
  • \u53ef\u4ee5\u7075\u6d3b\u5730\u7ec4\u5408\u591a\u4e2a\u88c5\u9970\u5668\u6765\u589e\u5f3a\u5bf9\u8c61\u7684\u884c\u4e3a\u3002<\/span><\/li>\n<\/ul>\n

    \u9002\u7528\u573a\u666f\uff1a<\/span><\/strong><\/p>\n

      \n
    • \u5f53\u9700\u8981\u900f\u660e\u4e14\u52a8\u6001\u5730\u6269\u5c55\u7c7b\u7684\u529f\u80fd\u65f6\u3002<\/span><\/li>\n
    • \u5f53\u5e0c\u671b\u4e00\u4e2a\u5bf9\u8c61\u6709\u591a\u79cd\u53d8\u5316\uff0c\u6216\u8005\u5bf9\u8c61\u7684\u53d8\u5316\u53ef\u4ee5\u7ec4\u5408\u65f6\u3002<\/span><\/li>\n
    • \u5728\u4e0d\u60f3\u589e\u52a0\u5f88\u591a\u5b50\u7c7b\u7684\u60c5\u51b5\u4e0b\u6269\u5c55\u7c7b\u3002<\/span><\/li>\n<\/ul>\n

      Java\u793a\u4f8b\uff1a<\/span><\/strong><\/p>\n

      \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u7b80\u5355\u7684TextView\u7c7b\uff0c\u6211\u4eec\u60f3\u52a8\u6001\u5730\u4e3a\u5176\u6dfb\u52a0\u8fb9\u6846\u548c\u6eda\u52a8\u6761\u800c\u4e0d\u4fee\u6539\u539f\u59cb\u7c7b\u3002<\/span><\/p>\n

      \n
      \n
      \/\/ \u57fa\u672c\u7ec4\u4ef6\u63a5\u53e3\ninterface VisualComponent {\n    void draw();\n}\n\n\/\/ \u5177\u4f53\u7ec4\u4ef6\u7c7b\nclass TextView implements VisualComponent {\n    @Override\n    public void draw() {\n        System.out.println(\"Drawing TextView\");\n    }\n}\n\n\/\/ \u62bd\u8c61\u88c5\u9970\u5668\nabstract class Decorator implements VisualComponent {\n    protected VisualComponent component;\n\n    public Decorator(VisualComponent component) {\n        this.component = component;\n    }\n\n    public void draw() {\n        component.draw();\n        Delegation\n    }\n}\n\n\/\/ \u5177\u4f53\u88c5\u9970\u5668\uff1a\u8fb9\u6846\nclass BorderDecorator extends Decorator {\n    public BorderDecorator(VisualComponent component) {\n        super(component);\n    }\n\n    @Override\n    public void draw() {\n        super.draw();\n        drawBorder();\n    }\n\n    private void drawBorder() {\n        System.out.println(\"Drawing border\");\n    }\n}\n\n\/\/ \u5177\u4f53\u88c5\u9970\u5668\uff1a\u6eda\u52a8\u6761\nclass ScrollDecorator extends Decorator {\n    public ScrollDecorator(VisualComponent component) {\n        super(component);\n    }\n\n    @Override\n    public void draw() {\n        super.draw();\n        drawScrollbar();\n    }\n\n    private void drawScrollbar() {\n        System.out.println(\"Drawing scrollbar\");\n    }\n}\n\npublic class DecoratorDemo {\n    public static void main(String[] args) {\n        VisualComponent textView = new TextView();\n        VisualComponent borderedTextView = new BorderDecorator(textView);\n        VisualComponent scrollableBorderedTextView = new ScrollDecorator(borderedTextView);\n        scrollableBorderedTextView.draw();\n    }\n}<\/pre>\n<\/div>\n<\/section>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u539f\u59cb\u7684TextView\u4e0d\u4f1a\u88ab\u4fee\u6539\uff0c\u6211\u4eec\u901a\u8fc7\u88c5\u9970\u5668BorderDecorator\u548cScrollDecorator\u5206\u522b\u6dfb\u52a0\u4e86\u8fb9\u6846\u548c\u6eda\u52a8\u6761\u7684\u529f\u80fd\u3002<\/span><\/p>\n
      \u4ee3\u7406\u6a21\u5f0f\uff1a<\/span><\/strong><\/h3>\n
      \u76ee\u7684\uff1a<\/span><\/strong><\/p>\n
        \n
      • \u63a7\u5236\u5bf9\u5176\u4ed6\u5bf9\u8c61\u7684\u8bbf\u95ee\uff0c\u76f8\u5f53\u4e8e\u8be5\u5bf9\u8c61\u7684\u4e00\u4e2a\u4ee3\u8868\uff0c\u5ba2\u6237\u7aef\u901a\u5e38\u901a\u8fc7\u4ee3\u7406\u95f4\u63a5\u8bbf\u95ee\u90a3\u4e2a\u5bf9\u8c61\u3002<\/span><\/li>\n
      • \u5ba2\u6237\u7aef\u53ef\u80fd\u9700\u8981\u8bbf\u95ee\u63a7\u5236\u3001\u5ef6\u8fdf\u521d\u59cb\u5316\u3001\u8fdc\u7a0b\u5bf9\u8c61\u8bbf\u95ee\u7b49\u3002<\/span><\/li>\n<\/ul>\n
        \u9002\u7528\u573a\u666f\uff1a<\/span><\/strong><\/p>\n
          \n
        • \u5f53\u9700\u8981\u5bf9\u539f\u6709\u5bf9\u8c61\u7684\u64cd\u4f5c\u8fdb\u884c\u63a7\u5236\u6216\u589e\u5f3a\u65f6\u3002<\/span><\/li>\n
        • \u5f53\u9700\u8981\u5ef6\u8fdf\u5bf9\u8c61\u7684\u521b\u5efa\u65f6\uff08\u865a\u62df\u4ee3\u7406\uff09\u3002<\/span><\/li>\n
        • \u5f53\u9700\u8981\u4e3a\u8fdc\u7a0b\u5bf9\u8c61\u63d0\u4f9b\u672c\u5730\u4ee3\u8868\u65f6\uff08\u8fdc\u7a0b\u4ee3\u7406\uff09\u3002<\/span><\/li>\n
        • \u5f53\u9700\u8981\u8bb0\u5f55\u5bf9\u8c61\u7684\u8bbf\u95ee\u65e5\u5fd7\u65f6\uff08\u4fdd\u62a4\u4ee3\u7406\uff09\u3002<\/span><\/li>\n<\/ul>\n
          Java\u793a\u4f8b\uff1a<\/span><\/strong><\/p>\n
          \u8bbe\u60f3\u6709\u4e00\u4e2a\u6602\u8d35\u7684\u6570\u636e\u5e93\u8fde\u63a5\u7c7b\uff0c\u6211\u4eec\u4e0d\u5e0c\u671b\u9664\u975e\u5fc5\u8981\u5426\u5219\u4e0d\u521b\u5efa\u8fde\u63a5\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee3\u7406\u6a21\u5f0f\u6765\u5b9e\u73b0\u61d2\u52a0\u8f7d\u3002<\/span><\/p>\n
          \n
          \n
          \/\/ \u63a5\u53e3\ninterface Database {\n    void connect();\n}\n\n\/\/ \u5b9e\u9645\u6570\u636e\u5e93\u8fde\u63a5\u7c7b\nclass RealDatabase implements Database {\n    @Override\n    public void connect() {\n        System.out.println(\"Connecting to a real database.\");\n    }\n}\n\n\/\/ \u6570\u636e\u5e93\u4ee3\u7406\u7c7b\nclass DatabaseProxy implements Database {\n    private RealDatabase realDatabase;\n\n    @Override\n    public void connect() {\n        if (realDatabase == null) {\n            realDatabase = new RealDatabase();\n        }\n        realDatabase.connect();\n    }\n}\n\npublic class ProxyDemo {\n    public static void main(String[] args) {\n        Database db = new DatabaseProxy();\n        db.connect();\n        \/\/ \u8fde\u63a5\u5c06\u88ab\u5ef6\u8fdf\u5230\u5b9e\u9645\u88ab\u9700\u8981\u7684\u65f6\u5019\n    }\n}<\/pre>\n<\/div>\n<\/section>\n
          \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cDatabaseProxy\u4f5c\u4e3aRealDatabase\u7684\u4ee3\u7406\uff0c\u5b83\u5ef6\u8fdf\u4e86\u771f\u5b9e\u6570\u636e\u5e93\u8fde\u63a5\u5bf9\u8c61\u7684\u521b\u5efa\u76f4\u5230\u5b9e\u9645\u9700\u8981\u8fde\u63a5\u65f6\u3002\u5ba2\u6237\u7aef\u4ee3\u7801\u4f7f\u7528DatabaseProxy\u800c\u65e0\u9700\u5173\u5fc3\u771f\u6b63\u7684\u6570\u636e\u5e93\u8fde\u63a5\u4f55\u65f6\u5efa\u7acb\u3002<\/span><\/p>\n
          \u533a\u522b\u603b\u7ed3\uff1a<\/span><\/strong><\/p>\n
          \u88c5\u9970\u5668\u6a21\u5f0f\u5173\u6ce8\u4e8e\u5728\u4e0d\u6539\u53d8\u63a5\u53e3\u7684\u524d\u63d0\u4e0b\u589e\u52a0\u5bf9\u8c61\u7684\u529f\u80fd\uff0c\u662f\u4e00\u79cd\u7ed3\u6784\u6027\u6269\u5c55\uff1b\u800c\u4ee3\u7406\u6a21\u5f0f\u5173\u6ce8\u4e8e\u63a7\u5236\u5bf9\u5bf9\u8c61\u7684\u8bbf\u95ee\uff0c\u662f\u4e00\u79cd\u63a7\u5236\u6027\u6a21\u5f0f\u3002\u88c5\u9970\u5668\u5141\u8bb8\u9012\u5f52\u7ec4\u5408\uff0c\u800c\u4ee3\u7406\u901a\u5e38\u4e0d\u6d89\u53ca\u9012\u5f52\u3002\u4ee3\u7406\u6a21\u5f0f\u4e2d\u7684\u4ee3\u7406\u77e5\u9053\u5b83\u6b63\u5728\u4ee3\u7406\u7684\u5bf9\u8c61\uff0c\u800c\u88c5\u9970\u5668\u53ea\u5173\u5fc3\u63a5\u53e3\uff0c\u4e0d\u9700\u8981\u77e5\u9053\u5177\u4f53\u7684\u7c7b\u3002<\/span><\/p>\n
          \n
          \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7: \u4e92\u8054\u7f51\u9762\u8bd5\u5c0f\u5e2e\u624b<\/p><\/blockquote>\n<\/div>\n","raw":"","protected":false},"excerpt":{"rendered":"
          \u88c5\u9970\u5668\u6a21\u5f0f\uff08Decorator Pattern\uff09\u548c\u4ee3\u7406\u6a21\u5f0f\uff08Proxy Pattern\uff09\u90fd\u662f\u7ed3\u6784\u578b\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5b83\u4eec\u5728\u7ed3\u6784\u4e0a\u770b\u8d77\u6765\u76f8\u4f3c …<\/p>\n","protected":false},"author":1,"featured_media":4138,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[30],"tags":[],"class_list":["post-4141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-30"],"post_thumbnail_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524145438825-150x150.jpeg","content_first_image":null,"post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524145438825-300x128.jpeg","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524145438825.jpeg","post_frist_image":null,"post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524145438825-300x128.jpeg","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524145438825.jpeg","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524145438825.jpeg","post_all_images":[],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"\u9762\u8bd5","post_date":"2024-05-23","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230519082947553.jpg","avatarurls":[],"related_posts":null,"pageviews":318,"next_post_id":4467,"next_post_title":"\u4e0d\u662f\uff0c\u4f60\u8fd8\u5728\u968f\u4fbf\u8bbe\u8ba1\u6570\u636e\u5e93\u5b57\u6bb5\u7c7b\u578b\u548c\u957f\u5ea6\uff1f","previous_post_id":4759,"previous_post_title":"\u7f8e\u56e2\u4e00\u9762\uff1a\u78b0\u5230\u8fc7OOM\u5417\uff1f\u4f60\u662f\u600e\u4e48\u5904\u7406\u7684\uff1f","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/4141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=4141"}],"version-history":[{"count":2,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/4141\/revisions"}],"predecessor-version":[{"id":6467,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/4141\/revisions\/6467"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media\/4138"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=4141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=4141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=4141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}