{"id":1914,"date":"2022-02-12T11:49:55","date_gmt":"2022-02-12T03:49:55","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=1914"},"modified":"2022-02-12T12:13:07","modified_gmt":"2022-02-12T04:13:07","slug":"%e9%80%82%e9%85%8d%e5%99%a8%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=1914","title":{"rendered":"\u9002\u914d\u5668\u6a21\u5f0f"},"content":{"rendered":"\n<p>\u8be5\u6a21\u5f0f\u4e0d\u662f\u5728\u8bbe\u8ba1\u9636\u6bb5\u4f7f\u7528\uff0c\u800c\u662f\u540e\u671f\u9002\u914d\u4e0d\u540c\u63a5\u53e3\u7684\u4e00\u79cd\u624b\u6bb5\uff0c\u751f\u6d3b\u4e2d\u7684\u4f8b\u5b50\uff0c\u8bfb\u5361\u5668\u5c31\u4f5c\u4e3a\u5185\u5b58\u5361\u548c\u7535\u8111\u4e4b\u95f4\u7684\u4e00\u79cd\u9002\u914d\u5668\uff0c\u8fd9\u6837\u5b50\u662f\u539f\u672c\u4e0d\u517c\u5bb9\u7684\u529f\u80fd\u53ef\u4ee5\u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n\n\n\n<p><strong>\u610f\u56fe\uff1a<\/strong>\u5c06\u4e00\u4e2a\u7c7b\u7684\u63a5\u53e3\u8f6c\u6362\u6210\u5ba2\u6237\u5e0c\u671b\u7684\u53e6\u5916\u4e00\u4e2a\u63a5\u53e3\u3002\u9002\u914d\u5668\u6a21\u5f0f\u4f7f\u5f97\u539f\u672c\u7531\u4e8e\u63a5\u53e3\u4e0d\u517c\u5bb9\u800c\u4e0d\u80fd\u4e00\u8d77\u5de5\u4f5c\u7684\u90a3\u4e9b\u7c7b\u53ef\u4ee5\u4e00\u8d77\u5de5\u4f5c\u3002<\/p>\n\n\n\n<p><strong>\u4e3b\u8981\u89e3\u51b3\uff1a<\/strong>\u4e3b\u8981\u89e3\u51b3\u5728\u8f6f\u4ef6\u7cfb\u7edf\u4e2d\uff0c\u5e38\u5e38\u8981\u5c06\u4e00\u4e9b&#8221;\u73b0\u5b58\u7684\u5bf9\u8c61&#8221;\u653e\u5230\u65b0\u7684\u73af\u5883\u4e2d\uff0c\u800c\u65b0\u73af\u5883\u8981\u6c42\u7684\u63a5\u53e3\u662f\u73b0\u5bf9\u8c61\u4e0d\u80fd\u6ee1\u8db3\u7684\u3002<\/p>\n\n\n\n<p>\u4f18\u70b9\uff1a1.\u53ef\u4ee5\u8ba9\u4e24\u4e2a\u65e0\u5173\u8054\u7684\u7c7b\u4e00\u8d77\u5de5\u4f5c 2.\u7075\u6d3b 3.\u63d0\u4f9b\u590d\u7528\u6027<\/p>\n\n\n\n<p>\u7f3a\u70b9\uff1a\u4f7f\u5f97\u7cfb\u7edf\u7684\u590d\u6742\u6027\u63d0\u9ad8\uff0c\u51cc\u4e71\uff0c\u6bd4\u5982\u8c03\u7528A\u7684\u65b9\u6cd5\uff0c\u5b9e\u9645\u5374\u5728\u9002\u914d\u5668\u4e2d\uff0c\u8c03\u7528\u4e86B\u7684\u4e00\u4e9b\u5b9e\u73b0\uff0c\u4e0d\u65b9\u4fbf\u8ddf\u8e2a\u3002<span class=\"has-inline-color has-bright-blue-color\">\u5982\u679c\u53ef\u80fd\uff0c\u53ef\u4ee5\u8003\u8651\u91cd\u6784\uff0c\u800c\u4e0d\u662f\u9002\u914d\u3002<\/span><\/p>\n\n\n\n<p><strong>\u5982\u4f55\u89e3\u51b3\uff1a<\/strong>\u7ee7\u627f\u6216\u4f9d\u8d56\uff08\u63a8\u8350\uff09\u3002<\/p>\n\n\n\n<p><strong>\u5173\u952e\u4ee3\u7801\uff1a<\/strong><span class=\"has-inline-color has-bright-red-color\">\u9002\u914d\u5668\u7ee7\u627f\u6216\u4f9d\u8d56\u5df2\u6709\u7684\u5bf9\u8c61\uff0c\u5b9e\u73b0\u60f3\u8981\u7684\u76ee\u6807\u63a5\u53e3\u3002<\/span><\/p>\n\n\n\n<p>\u6211\u4eec\u6709\u4e00\u4e2a&nbsp;<em>MediaPlayer<\/em>&nbsp;\u63a5\u53e3\u548c\u4e00\u4e2a\u5b9e\u73b0\u4e86&nbsp;<em>MediaPlayer<\/em>&nbsp;\u63a5\u53e3\u7684\u5b9e\u4f53\u7c7b&nbsp;<em>AudioPlayer<\/em>\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c<em>AudioPlayer<\/em>&nbsp;\u53ef\u4ee5\u64ad\u653e mp3 \u683c\u5f0f\u7684\u97f3\u9891\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u8fd8\u6709\u53e6\u4e00\u4e2a\u63a5\u53e3&nbsp;<em>AdvancedMediaPlayer<\/em>&nbsp;\u548c\u5b9e\u73b0\u4e86&nbsp;<em>AdvancedMediaPlayer<\/em>&nbsp;\u63a5\u53e3\u7684\u5b9e\u4f53\u7c7b\u3002\u8be5\u7c7b\u53ef\u4ee5\u64ad\u653e vlc \u548c mp4 \u683c\u5f0f\u7684\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u60f3\u8981\u8ba9&nbsp;<em>AudioPlayer<\/em>&nbsp;\u64ad\u653e\u5176\u4ed6\u683c\u5f0f\u7684\u97f3\u9891\u6587\u4ef6\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5b9e\u73b0\u4e86&nbsp;<em>MediaPlayer<\/em>&nbsp;\u63a5\u53e3\u7684\u9002\u914d\u5668\u7c7b&nbsp;<em>MediaAdapter<\/em>\uff0c\u5e76\u4f7f\u7528&nbsp;<em>AdvancedMediaPlayer<\/em>&nbsp;\u5bf9\u8c61\u6765\u64ad\u653e\u6240\u9700\u7684\u683c\u5f0f\u3002<\/p>\n\n\n\n<p><em>AudioPlayer<\/em>\u00a0\u4f7f\u7528\u9002\u914d\u5668\u7c7b\u00a0<em>MediaAdapter<\/em>\u00a0\u4f20\u9012\u6240\u9700\u7684\u97f3\u9891\u7c7b\u578b\uff0c\u4e0d\u9700\u8981\u77e5\u9053\u80fd\u64ad\u653e\u6240\u9700\u683c\u5f0f\u97f3\u9891\u7684\u5b9e\u9645\u7c7b\u3002<em>AdapterPatternDemo<\/em>\u00a0\u7c7b\u4f7f\u7528\u00a0<em>AudioPlayer<\/em>\u00a0\u7c7b\u6765\u64ad\u653e\u5404\u79cd\u683c\u5f0f\u3002<\/p>\n\n\n\n<p><span class=\"has-inline-color has-bright-red-color\">\u8c03\u7528\u8005\u4e0d\u9700\u8981\u77e5\u9053\u8c03\u7528\u7684\u5b9e\u9645\u7c7b\uff0c\u800c\u662f\u5728adapter\u4e2d\u81ea\u884c\u5224\u65ad<\/span><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u6b65\u9aa4 1\n\u4e3a\u5a92\u4f53\u64ad\u653e\u5668\u548c\u66f4\u9ad8\u7ea7\u7684\u5a92\u4f53\u64ad\u653e\u5668\u521b\u5efa\u63a5\u53e3\u3002\n\nMediaPlayer.java\npublic interface MediaPlayer {\n   public void play(String audioType, String fileName);\n}\nAdvancedMediaPlayer.java\npublic interface AdvancedMediaPlayer { \n   public void playVlc(String fileName);\n   public void playMp4(String fileName);\n}\n\u6b65\u9aa4 2\n\u521b\u5efa\u5b9e\u73b0\u4e86 AdvancedMediaPlayer \u63a5\u53e3\u7684\u5b9e\u4f53\u7c7b\u3002\n\nVlcPlayer.java\npublic class VlcPlayer implements AdvancedMediaPlayer{\n   @Override\n   public void playVlc(String fileName) {\n      System.out.println(\"Playing vlc file. Name: \"+ fileName);      \n   }\n \n   @Override\n   public void playMp4(String fileName) {\n      \/\/\u4ec0\u4e48\u4e5f\u4e0d\u505a\n   }\n}\nMp4Player.java\npublic class Mp4Player implements AdvancedMediaPlayer{\n \n   @Override\n   public void playVlc(String fileName) {\n      \/\/\u4ec0\u4e48\u4e5f\u4e0d\u505a\n   }\n \n   @Override\n   public void playMp4(String fileName) {\n      System.out.println(\"Playing mp4 file. Name: \"+ fileName);      \n   }\n}\n\u6b65\u9aa4 3\n\u521b\u5efa\u5b9e\u73b0\u4e86 MediaPlayer \u63a5\u53e3\u7684\u9002\u914d\u5668\u7c7b\u3002\n\nMediaAdapter.java\npublic class MediaAdapter implements MediaPlayer {\n \n   AdvancedMediaPlayer advancedMusicPlayer;\n \n   public MediaAdapter(String audioType){\n      if(audioType.equalsIgnoreCase(\"vlc\") ){\n         advancedMusicPlayer = new VlcPlayer();       \n      } else if (audioType.equalsIgnoreCase(\"mp4\")){\n         advancedMusicPlayer = new Mp4Player();\n      }  \n   }\n \n   @Override\n   public void play(String audioType, String fileName) {\n      if(audioType.equalsIgnoreCase(\"vlc\")){\n         advancedMusicPlayer.playVlc(fileName);\n      }else if(audioType.equalsIgnoreCase(\"mp4\")){\n         advancedMusicPlayer.playMp4(fileName);\n      }\n   }\n}\n\u6b65\u9aa4 4\n\u521b\u5efa\u5b9e\u73b0\u4e86 MediaPlayer \u63a5\u53e3\u7684\u5b9e\u4f53\u7c7b\u3002\n\nAudioPlayer.java\npublic class AudioPlayer implements MediaPlayer {\n   MediaAdapter mediaAdapter; \n \n   @Override\n   public void play(String audioType, String fileName) {    \n \n      \/\/\u64ad\u653e mp3 \u97f3\u4e50\u6587\u4ef6\u7684\u5185\u7f6e\u652f\u6301\n      if(audioType.equalsIgnoreCase(\"mp3\")){\n         System.out.println(\"Playing mp3 file. Name: \"+ fileName);         \n      } \n      \/\/mediaAdapter \u63d0\u4f9b\u4e86\u64ad\u653e\u5176\u4ed6\u6587\u4ef6\u683c\u5f0f\u7684\u652f\u6301\n      else if(audioType.equalsIgnoreCase(\"vlc\") \n         || audioType.equalsIgnoreCase(\"mp4\")){\n         mediaAdapter = new MediaAdapter(audioType);\n         mediaAdapter.play(audioType, fileName);\n      }\n      else{\n         System.out.println(\"Invalid media. \"+\n            audioType + \" format not supported\");\n      }\n   }   \n}\n\u6b65\u9aa4 5\n\u4f7f\u7528 AudioPlayer \u6765\u64ad\u653e\u4e0d\u540c\u7c7b\u578b\u7684\u97f3\u9891\u683c\u5f0f\u3002\n\nAdapterPatternDemo.java\npublic class AdapterPatternDemo {\n   public static void main(String[] args) {\n      AudioPlayer audioPlayer = new AudioPlayer();\n \n      audioPlayer.play(\"mp3\", \"beyond the horizon.mp3\");\n      audioPlayer.play(\"mp4\", \"alone.mp4\");\n      audioPlayer.play(\"vlc\", \"far far away.vlc\");\n      audioPlayer.play(\"avi\", \"mind me.avi\");\n   }\n}\n\u6b65\u9aa4 6\n\u6267\u884c\u7a0b\u5e8f\uff0c\u8f93\u51fa\u7ed3\u679c\uff1a\n\nPlaying mp3 file. Name: beyond the horizon.mp3\nPlaying mp4 file. Name: alone.mp4\nPlaying vlc file. Name: far far away.vlc\nInvalid media. avi format not supported\n<\/pre>\n\n\n\n<p><a href=\"https:\/\/www.runoob.com\/design-pattern\/adapter-pattern.html\">\u9002\u914d\u5668\u6a21\u5f0f | \u83dc\u9e1f\u6559\u7a0b (runoob.com)<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8be5\u6a21\u5f0f\u4e0d\u662f\u5728\u8bbe\u8ba1\u9636\u6bb5\u4f7f\u7528\uff0c\u800c\u662f\u540e\u671f\u9002\u914d\u4e0d\u540c\u63a5\u53e3\u7684\u4e00\u79cd\u624b\u6bb5\uff0c\u751f\u6d3b\u4e2d\u7684\u4f8b\u5b50\uff0c\u8bfb\u5361\u5668\u5c31\u4f5c\u4e3a\u5185\u5b58\u5361\u548c\u7535\u8111\u4e4b\u95f4\u7684\u4e00\u79cd\u9002\u914d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[131],"tags":[],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1914"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1914"}],"version-history":[{"count":13,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1914\/revisions"}],"predecessor-version":[{"id":1927,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1914\/revisions\/1927"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}