{"id":107,"date":"2008-03-04T16:48:03","date_gmt":"2008-03-04T16:48:03","guid":{"rendered":""},"modified":"2008-03-04T16:48:03","modified_gmt":"2008-03-04T16:48:03","slug":"107","status":"publish","type":"post","link":"https:\/\/www.poloo.org\/?p=107","title":{"rendered":"\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f(Factory Method Pattern)"},"content":{"rendered":"<p>\u4e00\u3001 \u5de5\u5382\u65b9\u6cd5\uff08Factory Method\uff09\u6a21\u5f0f<br \/>\u5de5\u5382\u65b9\u6cd5\uff08FactoryMethod\uff09\u6a21\u5f0f\u662f\u7c7b\u7684\u521b\u5efa\u6a21\u5f0f\uff0c\u5176\u7528\u610f\u662f\u5b9a\u4e49\u4e00\u4e2a\u521b\u5efa\u4ea7\u54c1\u5bf9\u8c61\u7684\u5de5\u5382\u63a5\u53e3\uff0c\u5c06\u5b9e\u9645\u521b\u5efa\u5de5\u4f5c\u63a8\u8fdf\u5230\u5b50\u7c7b\u4e2d\u3002<\/p>\n<p>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u662f\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u7684\u8fdb\u4e00\u6b65\u62bd\u8c61\u548c\u63a8\u5e7f\u3002\u7531\u4e8e\u4f7f\u7528\u4e86\u591a\u6001\u6027\uff0c\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4fdd\u6301\u4e86\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u7684\u4f18\u70b9\uff0c\u800c\u4e14\u514b\u670d\u4e86\u5b83\u7684\u7f3a\u70b9\u3002<\/p>\n<p>\u5728\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e2d\uff0c\u6838\u5fc3\u7684\u5de5\u5382\u7c7b\u4e0d\u518d\u8d1f\u8d23\u6240\u6709\u4ea7\u54c1\u7684\u521b\u5efa\uff0c\u800c\u662f\u5c06\u5177\u4f53\u521b\u5efa\u5de5\u4f5c\u4ea4\u7ed9\u5b50\u7c7b\u53bb\u505a\u3002\u8fd9\u4e2a\u6838\u5fc3\u7c7b\u4ec5\u4ec5\u8d1f\u8d23\u7ed9\u51fa\u5177\u4f53\u5de5\u5382\u5fc5\u987b\u5b9e\u73b0\u7684\u63a5\u53e3\uff0c\u800c\u4e0d\u63a5\u89e6\u54ea\u4e00\u4e2a\u4ea7\u54c1\u7c7b\u88ab\u5b9e\u4f8b\u5316\u8fd9\u79cd\u7ec6\u8282\u3002\u8fd9\u4f7f\u5f97\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u53ef\u4ee5\u5141\u8bb8\u7cfb\u7edf\u5728\u4e0d\u4fee\u6539\u5de5\u5382\u89d2\u8272\u7684\u60c5\u51b5\u4e0b\u5f15\u8fdb\u65b0\u4ea7\u54c1\u3002<\/p>\n<p>\u5728Factory Method\u6a21\u5f0f\u4e2d\uff0c\u5de5\u5382\u7c7b\u4e0e\u4ea7\u54c1\u7c7b\u5f80\u5f80\u5177\u6709\u5e73\u884c\u7684\u7b49\u7ea7\u7ed3\u6784\uff0c\u5b83\u4eec\u4e4b\u95f4\u4e00\u4e00\u5bf9\u5e94\u3002<\/p>\n<p>\u4e8c\u3001 Factory Method\u6a21\u5f0f\u89d2\u8272\u4e0e\u7ed3\u6784\uff1a<br \/><img decoding=\"async\" src=\"http:\/\/www.poloo.org\/wp-content\/attachments\/month_0803\/i200834164558.gif\" \/><br \/>\u62bd\u8c61\u5de5\u5382\uff08Creator\uff09\u89d2\u8272\uff1a\u662f\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u7684\u6838\u5fc3\uff0c\u4e0e\u5e94\u7528\u7a0b\u5e8f\u65e0\u5173\u3002\u4efb\u4f55\u5728\u6a21\u5f0f\u4e2d\u521b\u5efa\u7684\u5bf9\u8c61\u7684\u5de5\u5382\u7c7b\u5fc5\u987b\u5b9e\u73b0\u8fd9\u4e2a\u63a5\u53e3\u3002<\/p>\n<p>\u5177\u4f53\u5de5\u5382\uff08Concrete Creator\uff09\u89d2\u8272\uff1a\u8fd9\u662f\u5b9e\u73b0\u62bd\u8c61\u5de5\u5382\u63a5\u53e3\u7684\u5177\u4f53\u5de5\u5382\u7c7b\uff0c\u5305\u542b\u4e0e\u5e94\u7528\u7a0b\u5e8f\u5bc6\u5207\u76f8\u5173\u7684\u903b\u8f91\uff0c\u5e76\u4e14\u53d7\u5230\u5e94\u7528\u7a0b\u5e8f\u8c03\u7528\u4ee5\u521b\u5efa\u4ea7\u54c1\u5bf9\u8c61\u3002\u5728\u4e0a\u56fe\u4e2d\u6709\u4e24\u4e2a\u8fd9\u6837\u7684\u89d2\u8272\uff1aBulbCreator\u4e0eTubeCreator\u3002<\/p>\n<p>\u62bd\u8c61\u4ea7\u54c1\uff08Product\uff09\u89d2\u8272\uff1a\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u6240\u521b\u5efa\u7684\u5bf9\u8c61\u7684\u8d85\u7c7b\u578b\uff0c\u4e5f\u5c31\u662f\u4ea7\u54c1\u5bf9\u8c61\u7684\u5171\u540c\u7236\u7c7b\u6216\u5171\u540c\u62e5\u6709\u7684\u63a5\u53e3\u3002\u5728\u4e0a\u56fe\u4e2d\uff0c\u8fd9\u4e2a\u89d2\u8272\u662fLight\u3002<\/p>\n<p>\u5177\u4f53\u4ea7\u54c1\uff08Concrete Product\uff09\u89d2\u8272\uff1a\u8fd9\u4e2a\u89d2\u8272\u5b9e\u73b0\u4e86\u62bd\u8c61\u4ea7\u54c1\u89d2\u8272\u6240\u5b9a\u4e49\u7684\u63a5\u53e3\u3002\u67d0\u5177\u4f53\u4ea7\u54c1\u6709\u4e13\u95e8\u7684\u5177\u4f53\u5de5\u5382\u521b\u5efa\uff0c\u5b83\u4eec\u4e4b\u95f4\u5f80\u5f80\u4e00\u4e00\u5bf9\u5e94\u3002<\/p>\n<p>\u4e09\u3001 \u7a0b\u5e8f\u4e3e\u4f8b\uff1a<br \/><code>using System;<\/p>\n<p>public abstract&nbsp;&nbsp; class Light<br \/>{<br \/>&nbsp;&nbsp; public abstract void TurnOn();<br \/>&nbsp;&nbsp; public abstract void TurnOff();<br \/>}<\/p>\n<p>public class BulbLight : Light<br \/>{<br \/>&nbsp;&nbsp; public override void TurnOn()<br \/>&nbsp;&nbsp; { Console.WriteLine(\"Bulb Light is Turned on\"); }<\/p>\n<p>&nbsp;&nbsp; public override void TurnOff()<br \/>&nbsp;&nbsp; { Console.WriteLine(\"Bulb Light is Turned off\"); }<br \/>}<\/p>\n<p>public class TubeLight : Light<br \/>{<br \/>&nbsp;&nbsp; public override void TurnOn()<br \/>&nbsp;&nbsp; { Console.WriteLine(\"Tube Light is Turned on\"); }<\/p>\n<p>&nbsp;&nbsp; public override void TurnOff()<br \/>&nbsp;&nbsp; { Console.WriteLine(\"Tube Light is Turned off\"); }<br \/>}<\/p>\n<p>public abstract&nbsp;&nbsp; class Creator<br \/>{<br \/>&nbsp;&nbsp; public abstract Light factory();<br \/>}<\/p>\n<p>public class BulbCreator : Creator<br \/>{<br \/>&nbsp;&nbsp; public override Light factory()<br \/>&nbsp;&nbsp; { return new BulbLight(); }<br \/>}<\/p>\n<p>public class TubeCreator : Creator<br \/>{<br \/>&nbsp;&nbsp; public override Light factory()<br \/>&nbsp;&nbsp; { return new TubeLight(); }<br \/>}<\/p>\n<p>public class Client<br \/>{<br \/>&nbsp;&nbsp; public static void Main()<br \/>&nbsp;&nbsp; {<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creator c1 = new BulbCreator();<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creator c2 = new TubeCreator();<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Light l1 = c1.factory();<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Light l2 = c2.factory();<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;l1.TurnOn();<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;l1.TurnOff();<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(\"-----------------\");<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;l2.TurnOn();<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;l2.TurnOff();<br \/>&nbsp;&nbsp; }<br \/>}<br \/><\/code><\/p>\n<p>\u5de5\u5382\u65b9\u6cd5\u7684\u6d3b\u52a8\u5e8f\u5217\u56fe<br \/><img decoding=\"async\" src=\"http:\/\/www.poloo.org\/wp-content\/attachments\/month_0803\/k200834164615.gif\" \/><br \/>\u6d3b\u52a8\u8fc7\u7a0b\u5305\u62ec\uff1a<\/p>\n<p>\u5ba2\u6237\u7aef\u521b\u5efaBulbCreator\u5bf9\u8c61\uff0c\u5ba2\u6237\u7aef\u6301\u6709\u6b64\u5bf9\u8c61\u7684\u7c7b\u578b\u662fCreator\uff0c\u800c\u5b9e\u9645\u7c7b\u578b\u662fBulbCreator\u3002\u7136\u540e\u5ba2\u6237\u7aef\u8c03\u7528BulbCreator\u7684factory\u65b9\u6cd5\uff0c\u4e4b\u540eBulbCreator\u8c03\u7528BulbLight\u7684\u6784\u9020\u51fd\u6570\u521b\u9020\u51fa\u4ea7\u54c1BulbLight\u5bf9\u8c61\u3002<\/p>\n<p>\u56db\u3001 \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e0e\u7b80\u5355\u5de5\u5382\u6a21\u5f0f<br \/>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e0e\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u518d\u7ed3\u6784\u4e0a\u7684\u4e0d\u540c\u4e0d\u662f\u5f88\u660e\u663e\u3002\u5de5\u5382\u65b9\u6cd5\u7c7b\u7684\u6838\u5fc3\u662f\u4e00\u4e2a\u62bd\u8c61\u5de5\u5382\u7c7b\uff0c\u800c\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u628a\u6838\u5fc3\u653e\u5728\u4e00\u4e2a\u5177\u4f53\u7c7b\u4e0a\u3002<\/p>\n<p>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e4b\u6240\u4ee5\u6709\u4e00\u4e2a\u522b\u540d\u53eb\u591a\u6001\u6027\u5de5\u5382\u6a21\u5f0f\u662f\u56e0\u4e3a\u5177\u4f53\u5de5\u5382\u7c7b\u90fd\u6709\u5171\u540c\u7684\u63a5\u53e3\uff0c\u6216\u8005\u6709\u5171\u540c\u7684\u62bd\u8c61\u7236\u7c7b\u3002<\/p>\n<p>\u5f53\u7cfb\u7edf\u6269\u5c55\u9700\u8981\u6dfb\u52a0\u65b0\u7684\u4ea7\u54c1\u5bf9\u8c61\u65f6\uff0c\u4ec5\u4ec5\u9700\u8981\u6dfb\u52a0\u4e00\u4e2a\u5177\u4f53\u5bf9\u8c61\u4ee5\u53ca\u4e00\u4e2a\u5177\u4f53\u5de5\u5382\u5bf9\u8c61\uff0c\u539f\u6709\u5de5\u5382\u5bf9\u8c61\u4e0d\u9700\u8981\u8fdb\u884c\u4efb\u4f55\u4fee\u6539\uff0c\u4e5f\u4e0d\u9700\u8981\u4fee\u6539\u5ba2\u6237\u7aef\uff0c\u5f88\u597d\u7684\u7b26\u5408\u4e86&#8221;\u5f00\u653e\uff0d\u5c01\u95ed&#8221;\u539f\u5219\u3002\u800c\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u5728\u6dfb\u52a0\u65b0\u4ea7\u54c1\u5bf9\u8c61\u540e\u4e0d\u5f97\u4e0d\u4fee\u6539\u5de5\u5382\u65b9\u6cd5\uff0c\u6269\u5c55\u6027\u4e0d\u597d\u3002<\/p>\n<p>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u9000\u5316\u540e\u53ef\u4ee5\u6f14\u53d8\u6210\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u3002<\/p>\n<p>\u4e94\u3001 Factory Method\u6a21\u5f0f\u6f14\u5316<br \/>\u4f7f\u7528\u63a5\u53e3\u6216\u62bd\u8c61\u7c7b<br \/>\u62bd\u8c61\u5de5\u5382\u89d2\u8272\u548c\u62bd\u8c61\u573a\u9891\u89d2\u8272\u90fd\u53ef\u4ee5\u9009\u62e9\u7531\u63a5\u53e3\u6216\u62bd\u8c61\u7c7b\u5b9e\u73b0\u3002<\/p>\n<p>\u4f7f\u7528\u591a\u4e2a\u5de5\u5382\u65b9\u6cd5<br \/>\u62bd\u8c61\u5de5\u5382\u89d2\u8272\u53ef\u4ee5\u89c4\u5b9a\u51fa\u591a\u4e8e\u4e00\u4e2a\u7684\u5de5\u5382\u65b9\u6cd5\uff0c\u4ece\u800c\u4f7f\u5177\u4f53\u5de5\u5382\u89d2\u8272\u5b9e\u73b0\u8fd9\u4e9b\u4e0d\u540c\u7684\u5de5\u5382\u65b9\u6cd5\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u63d0\u4f9b\u4e0d\u540c\u7684\u5546\u4e1a\u903b\u8f91\uff0c\u4ee5\u6ee1\u8db3\u63d0\u4f9b\u4e0d\u540c\u7684\u4ea7\u54c1\u5bf9\u8c61\u7684\u4efb\u52a1\u3002<\/p>\n<p>\u4ea7\u54c1\u7684\u5faa\u73af\u4f7f\u7528<br \/>\u5de5\u5382\u65b9\u6cd5\u603b\u662f\u8c03\u7528\u4ea7\u54c1\u7c7b\u7684\u6784\u9020\u51fd\u6570\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u4ea7\u54c1\u5b9e\u4f8b\uff0c\u7136\u540e\u5c06\u8fd9\u4e2a\u5b9e\u4f8b\u63d0\u4f9b\u7ed9\u5ba2\u6237\u7aef\u3002\u800c\u5728\u5b9e\u9645\u60c5\u5f62\u4e2d\uff0c\u5de5\u5382\u65b9\u6cd5\u6240\u505a\u7684\u4e8b\u60c5\u53ef\u4ee5\u76f8\u5f53\u590d\u6742\u3002<\/p>\n<p>\u4e00\u4e2a\u5e38\u89c1\u7684\u590d\u6742\u903b\u8f91\u5c31\u662f\u5faa\u73af\u4f7f\u7528\u4ea7\u54c1\u5bf9\u8c61\u3002\u5de5\u5382\u5bf9\u8c61\u5c06\u5df2\u7ecf\u521b\u5efa\u8fc7\u7684\u4ea7\u54c1\u767b\u8bb0\u5230\u4e00\u4e2a\u805a\u96c6\u4e2d\uff0c\u7136\u540e\u6839\u636e\u5ba2\u6237\u6240\u8bf7\u6c42\u7684\u4ea7\u54c1\u72b6\u6001\uff0c\u5411\u805a\u96c6\u67e5\u8be2\u3002\u5982\u679c\u6709\u6ee1\u8db3\u8981\u6c42\u7684\u4ea7\u54c1\u5bf9\u8c61\uff0c\u5c31\u76f4\u63a5\u5c06\u4ea7\u54c1\u8fd4\u56de\u5ba2\u6237\u7aef\uff1b\u5982\u679c\u805a\u96c6\u4e2d\u6ca1\u6709\u8fd9\u6837\u7684\u4ea7\u54c1\u5bf9\u8c61\uff0c\u90a3\u4e48\u5c31\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6ee1\u8db3\u8981\u6c42\u7684\u4ea7\u54c1\u5bf9\u8c61\uff0c\u7136\u540e\u5c06\u8fd9\u4e2a\u5bf9\u8c61\u767b\u8bb0\u5230\u805a\u96c6\u4e2d\uff0c\u518d\u8fd4\u8fd8\u7ed9\u5ba2\u6237\u7aef\u3002&#8221;\u4eab\u5143\u6a21\u5f0f\uff08Flyweight Pattern\uff09&#8221;\u5c31\u662f\u8fd9\u6837\u4e00\u4e2a\u6a21\u5f0f\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.poloo.org\/wp-content\/attachments\/month_0803\/h200834164638.gif\" \/><br \/>\u591a\u6001\u6027\u7684\u4e27\u5931\u548c\u6a21\u5f0f\u7684\u9000\u5316<br \/>\u4e00\u4e2a\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u7684\u5b9e\u73b0\u4f9d\u8d56\u4e8e\u5de5\u5382\u89d2\u8272\u548c\u4ea7\u54c1\u89d2\u8272\u7684\u591a\u6001\u6027\u3002\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e2a\u6a21\u5f0f\u53ef\u4ee5\u51fa\u73b0\u9000\u5316\u3002<\/p>\n<p>\u5de5\u5382\u65b9\u6cd5\u8fd4\u56de\u7684\u7c7b\u578b\u5e94\u5f53\u662f\u62bd\u8c61\u7c7b\u578b\uff0c\u800c\u4e0d\u662f\u5177\u4f53\u7c7b\u578b\u3002\u8c03\u7528\u5de5\u5382\u65b9\u6cd5\u7684\u5ba2\u6237\u7aef\u5e94\u5f53\u4f9d\u8d56\u62bd\u8c61\u4ea7\u54c1\u7f16\u7a0b\uff0c\u800c\u4e0d\u662f\u5177\u4f53\u4ea7\u54c1\u3002\u5982\u679c\u5de5\u5382\u4ec5\u4ec5\u8fd4\u56de\u4e00\u4e2a\u5177\u4f53\u4ea7\u54c1\u5bf9\u8c61\uff0c\u4fbf\u8fdd\u80cc\u4e86\u5de5\u5382\u65b9\u6cd5\u7684\u7528\u610f\uff0c\u53d1\u751f\u9000\u5316\uff0c\u8fd9\u65f6\u5c31\u4e0d\u518d\u662f\u5de5\u5382\u6a21\u5f0f\u4e86\u3002<\/p>\n<p>\u5de5\u5382\u7684\u7b49\u7ea7\u7ed3\u6784\uff1a\u5de5\u5382\u5bf9\u8c61\u5e94\u5f53\u6709\u4e00\u4e2a\u62bd\u8c61\u7684\u8d85\u7c7b\u578b\u3002\u5982\u679c\u7b49\u7ea7\u7ed3\u6784\u4e2d\u53ea\u6709\u4e00\u4e2a\u5177\u4f53\u5de5\u5382\u7c7b\u7684\u8bdd\uff0c\u62bd\u8c61\u5de5\u5382\u5c31\u53ef\u4ee5\u7701\u7565\uff0c\u53d1\u751f\u4e86\u9000\u5316\u3002<\/p>\n<p>\u516d\u3001 Factory Method\u6a21\u5f0f\u4e0e\u5176\u5b83\u6a21\u5f0f\u7684\u5173\u7cfb<br \/>\u4e0e\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u6709\u5173\u7684\u6a21\u5f0f\u8fd8\u5305\u62ec\uff1a<br \/>\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u3001MVC\u6a21\u5f0f\u3001\u4eab\u5143\u6a21\u5f0f\u3001\u5907\u5fd8\u5f55\u6a21\u5f0f<\/p>\n<p>\u4e03\u3001 \u53e6\u5916\u4e00\u4e2a\u4f8b\u5b50<br \/><code>\/\/ Factory Method pattern -- Real World example&nbsp;&nbsp;<\/p>\n<p>using System;<br \/>using System.Collections;<\/p>\n<p>\/\/ \"Product\"<br \/>abstract class Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class SkillsPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class EducationPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class ExperiencePage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class IntroductionPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class ResultsPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class ConclusionPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class SummaryPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"ConcreteProduct\"<br \/>class BibliographyPage : Page<br \/>{<br \/>}<\/p>\n<p>\/\/ \"Creator\"<br \/>abstract class Document<br \/>{<br \/>&nbsp;&nbsp;\/\/ Fields<br \/>&nbsp;&nbsp; protected ArrayList pages = new ArrayList();<\/p>\n<p>&nbsp;&nbsp;\/\/ Constructor<br \/>&nbsp;&nbsp; public Document()<br \/>&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;this.CreatePages();<br \/>&nbsp;&nbsp;}<\/p>\n<p>&nbsp;&nbsp;\/\/ Properties<br \/>&nbsp;&nbsp; public ArrayList Pages<br \/>&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;get{ return pages; }<br \/>&nbsp;&nbsp;}<\/p>\n<p>&nbsp;&nbsp;\/\/ Factory Method<br \/>&nbsp;&nbsp; abstract public void CreatePages();<br \/>}<\/p>\n<p>\/\/ \"ConcreteCreator\"<br \/>class Resume : Document<br \/>{<br \/>&nbsp;&nbsp;\/\/ Factory Method implementation<br \/>&nbsp;&nbsp; override public void CreatePages()<br \/>&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new SkillsPage() );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new EducationPage() );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new ExperiencePage() );<br \/>&nbsp;&nbsp;}<br \/>}<\/p>\n<p>\/\/ \"ConcreteCreator\"<br \/>class Report : Document<br \/>{<br \/>&nbsp;&nbsp;\/\/ Factory Method implementation<br \/>&nbsp;&nbsp; override public void CreatePages()<br \/>&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new IntroductionPage() );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new ResultsPage() );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new ConclusionPage() );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new SummaryPage() );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;pages.Add( new BibliographyPage() );<br \/>&nbsp;&nbsp;}<br \/>}<\/p>\n<p>\/**\/\/\/\/ &lt;summary&gt;<br \/>\/\/\/&nbsp;&nbsp;FactoryMethodApp test<br \/>\/\/\/ &lt;\/summary&gt;<br \/>class FactoryMethodApp<br \/>{<br \/>&nbsp;&nbsp;public static void Main( string[] args )<br \/>&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;Document[] docs = new Document[ 2 ];<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;\/\/ Note: constructors call Factory Method<br \/>&nbsp;&nbsp;&nbsp;&nbsp;docs[0] = new Resume();<br \/>&nbsp;&nbsp;&nbsp;&nbsp;docs[1] = new Report();<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;\/\/ Display document pages<br \/>&nbsp;&nbsp;&nbsp;&nbsp; foreach( Document document in docs )<br \/>&nbsp;&nbsp;&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine( \" \" + document + \" ------- \" );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;foreach( Page page in document.Pages )<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine( \" \" + page );<br \/>&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>&nbsp;&nbsp;}<br \/>}<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001 \u5de5\u5382\u65b9\u6cd5\uff08Factory Method\uff09\u6a21\u5f0f\u5de5\u5382\u65b9\u6cd5\uff08Fact&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-107","post","type-post","status-publish","format-standard","hentry","category-Note"],"_links":{"self":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=107"}],"version-history":[{"count":0,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/107\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}