{"rsdb":{"rid":"377693","subhead":"","postdate":"0","aid":"264258","fid":"97","uid":"1","topic":"1","content":"
\n

\u524d\u8a00<\/strong><\/h2> \n

\u3000\u3000\u4eca\u5929\u6211\u4eec\u4e00\u8d77\u770b\u770b\u8fd9\u4e2a\u89c2\u5bdf\u8005\u6a21\u5f0f\uff0c\u8fd9\u4e2a\u6a21\u5f0f\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u4e00\u4e2a\u53d1\u5e03\u8ba2\u9605\u7c7b\u4f3c\u7684\u6a21\u5f0f\u3002\u6309\u7167\u540d\u5b57\u6765\u7406\u89e3\u4e5f\u5c31\u662f\u5b58\u5728\u4e00\u4e2a\u89c2\u5bdf\u8005\u548c\u4e00\u4e2a\u88ab\u89c2\u5bdf\u8005\u3002\u8bf4\u51e0\u4e2a\u4f8b\u5b50\u7ed9\u5927\u5bb6\u542c\uff0c\u5927\u5bb6\u5e94\u8be5\u5c31\u660e\u767d\u4e86\u3002\u4f8b\u5982\u5728\u6211\u4eec\u73b0\u5728\u901a\u8fc7\u94f6\u884c\u5361\u652f\u4ed8\u4e4b\u540e\uff0c\u4f1a\u6536\u5230\u94f6\u884c\u53d1\u8fc7\u6765\u7684\u63d0\u793a\u4fe1\u606f\u3002\u4f8b\u5982\u5f53\u6211\u4eec\u8bdd\u8d39\u4f59\u989d\u6216\u8005\u6d41\u91cf\u4e0d\u8db3\u4e4b\u65f6\u4e5f\u4f1a\u6536\u5230\u63d0\u793a\u4fe1\u606f\u3002\u8fd9\u5176\u4e2d\u7684\u903b\u8f91\u5e2e\u6211\u4eec\u7406\u89e3\u89c2\u5bdf\u8005\u6a21\u5f0f\u3002\u5f53\u6211\u4eec\u89c2\u5bdf\u7684\u4e00\u4e2a\u5bf9\u8c61\u53d1\u9001\u53d8\u5316\u4e4b\u65f6\u5c31\u4f1a\u89e6\u53d1\u67d0\u4e00\u673a\u5236\u3002\u7136\u540e\u505a\u51fa\u4e00\u7cfb\u5217\u7684\u63aa\u65bd\u3002<\/p> \n

\u89c2\u5bdf\u8005\u6a21\u5f0f\u4ecb\u7ecd<\/strong><\/h2> \n

\u4e00\u3001\u6765\u7531<\/strong><\/h3> \n

\u3000\u3000\u5728\u8f6f\u4ef6\u7cfb\u7edf\u4e2d\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u5bf9\u8c61\u4e4b\u95f4\u5b58\u5728\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u88ab\u4fee\u6539\u65f6\uff0c\u5c06\u4f1a\u81ea\u52a8\u901a\u77e5\u5176\u4f9d\u8d56\u7684\u5bf9\u8c61\u3002\u5f53\u7136\u5982\u679c\u8fd9\u4e9b\u4f9d\u8d56\u5173\u7cfb\u8fc7\u4e8e\u7d27\u5bc6\u5bf9\u4e8e\u7cfb\u7edf\u6765\u8bf4\u53c8\u4e0d\u597d\u62b5\u5fa1\u5176\u53d8\u5316\u3002\u6240\u4ee5\u6211\u4eec\u53c8\u9700\u8981\u5b9e\u73b0\u5176\u7ed3\u6784\u7684\u677e\u8026\u5408\u3002<\/p> \n

\u4e8c\u3001\u610f\u56fe<\/strong><\/h3> \n

\u3000\u3000\u5b9a\u4e49\u5bf9\u8c61\u95f4\u7684\u4e00\u79cd\u4e00\u5bf9\u591a\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u6240\u6709\u4f9d\u8d56\u4e8e\u5b83\u7684\u5bf9\u8c61\u90fd\u5f97\u5230\u901a\u77e5\u5e76\u88ab\u81ea\u52a8\u66f4\u65b0\u3002<\/strong><\/p> \n

\u4e09\u3001\u6848\u4f8b\u56fe<\/strong><\/h3> \n

 \"\"<\/p> \n

\u56db\u3001\u89c2\u5bdf\u8005\u4ee3\u7801\u793a\u4f8b <\/strong><\/h3> \n

\u770b\u4e0a\u9762\u7684\u6848\u4f8b\u56fe\u3001\u6211\u4eec\u6765\u7ec6\u7ec6\u8bf4\u4e0b\u8fd9\u5176\u4e2d\u7684\u56db\u79cd\u89d2\u8272\uff1a<\/p> \n

\u62bd\u8c61\u4e3b\u9898\u89d2\u8272\uff1a<\/strong>\u5c06\u6240\u6709\u7684\u89c2\u5bdf\u8005\u5f15\u7528\u4fdd\u5b58\u5728\u4e00\u4e2a\u5217\u8868\uff0c\u540c\u65f6\u5305\u542b\u589e\u52a0\u5220\u9664\u89c2\u5bdf\u8005\u7684\u64cd\u4f5c\uff0c\u5305\u542b\u8c03\u7528\u62bd\u8c61\u89c2\u5bdf\u8005\u7684\u64cd\u4f5c\u65b9\u6cd5\u3002<\/strong><\/p> \n

\u5177\u4f53\u4e3b\u9898\u89d2\u8272\uff1a<\/strong>\u5b9e\u73b0\u5176\u62bd\u8c61\u4e3b\u9898\u7684\u62bd\u8c61\u65b9\u6cd5\u3002<\/strong><\/p> \n

\u62bd\u8c61\u89c2\u5bdf\u8005\uff1a<\/strong>\u4e3a\u6240\u6709\u7684\u5177\u4f53\u89c2\u5bdf\u8005\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\uff0c\u5728\u5f97\u5230\u4e3b\u9898\u901a\u77e5\u65f6\u66f4\u65b0\u81ea\u5df1\u3002<\/strong><\/p> \n

\u5177\u4f53\u89c2\u5bdf\u8005\uff1a<\/strong>\u5b9e\u73b0\u62bd\u8c61\u89c2\u5bdf\u8005\u5b9a\u4e49\u7684\u63a5\u53e3\uff0c\u662f\u81ea\u8eab\u7684\u72b6\u6001\u4e0e\u4e3b\u9898\u7684\u72b6\u6001\u76f8\u5bf9\u5e94\u3002<\/strong><\/p> \n

\u5230\u8fd9\u91cc\u6211\u4eec\u7b80\u5355\u7684\u4ecb\u7ecd\u4e86\u4e0b\u89c2\u5bdf\u8fd9\u6a21\u5f0f\u7684\u539f\u7406\u3002\u6211\u4eec\u63a5\u4e0b\u6765\u4f7f\u7528\u624b\u673a\u8bdd\u8d39\u4e0d\u8db3\u65f6\u77ed\u4fe1\u63d0\u9192\u8fd9\u4e00\u4e2a\u6848\u4f8b\u6765\u8bb2\u8ff0\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u4ee3\u7801\u793a\u4f8b\u5427\uff0c\u5f53\u6211\u4eec\u624b\u673a\u8bdd\u8d39\u4f4e\u4e8e\u6216\u5c0f\u4e8e<\/span>10\u5143\u7684\u65f6\u5019\uff0c\u5c06\u4f1a\u89e6\u53d1\u53d8\u5316\u66f4\u65b0\u63d0\u793a\uff1a<\/span><\/p> \n

 <\/p> \n

\n 
namespace<\/span> Observer_Pattern\r\n{\r\n    <\/span>class<\/span> ObserverPattern\r\n    {\r\n    }\r\n\r\n    <\/span>\/\/\/<\/span> <summary><\/span>\r\n    \/\/\/<\/span> \u62bd\u8c61\u4e3b\u9898\u89d2\u8272\uff08\u5c06\u6240\u6709\u89c2\u5bdf\u8005\u5bf9\u8c61\u7684\u5f15\u7528\u4fdd\u5b58\u5728\u4e00\u4e2a\u5217\u8868\u4e2d\u3001\u542b\u6709\u589e\u52a0\u548c\u5220\u9664\u89c2\u5bdf\u8005\u5bf9\u8c61\u64cd\u4f5c\u3001\u5305\u542b\u8c03\u7528\u62bd\u8c61\u89c2\u5bdf\u8005\u7684\u53d8\u66f4\u64cd\u4f5c\uff09\r\n    <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n    public<\/span> abstract<\/span> class<\/span> Subject\r\n    {\r\n        <\/span>internal<\/span> List<Observer> observers ;\r\n        <\/span>internal<\/span> int<\/span> Balance;\r\n        <\/span>\/\/\/<\/span> <summary><\/span>\r\n        \/\/\/<\/span> \u4fdd\u5b58\u6240\u6709\u89c2\u5bdf\u8005\u5bf9\u8c61\r\n        <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n        public<\/span> Subject(int<\/span> balance)\r\n        {\r\n            observers <\/span>= new<\/span> List<Observer>();\r\n            Balance <\/span>= balance;\r\n        }\r\n\r\n        <\/span>\/\/\/<\/span> <summary><\/span>\r\n        \/\/\/<\/span> \u589e\u52a0\u89c2\u5bdf\u8005\u5bf9\u8c61\r\n        <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n        public<\/span> abstract<\/span> void<\/span> Adds(Observer observer);\r\n\r\n        <\/span>\/\/\/<\/span> <summary><\/span>\r\n        \/\/\/<\/span> \u5220\u9664\u89c2\u5bdf\u8005\u5bf9\u8c61\r\n        <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n        public<\/span> abstract<\/span> void<\/span> Removes(Observer observer);\r\n\r\n        <\/span>\/\/\/<\/span> <summary><\/span>\r\n        \/\/\/<\/span> \u901a\u77e5\u89c2\u5bdf\u8005\u53d8\u5316\r\n        <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n        public<\/span> void<\/span> Notice() \r\n        {\r\n            <\/span>foreach<\/span> (var<\/span> item in<\/span> observers)\r\n            {\r\n                <\/span>if<\/span> (item!=null<\/span>)\r\n                {\r\n                    item.Change(<\/span>this<\/span>);\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    <\/span>\/\/\/<\/span> <summary><\/span>\r\n    \/\/\/<\/span> \u62bd\u8c61\u89c2\u5bdf\u8005\uff08\u4e3a\u6240\u6709\u5177\u4f53\u89c2\u5bdf\u8005\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f53\u4e3b\u9898\u901a\u77e5\u662f\u53d8\u66f4\u81ea\u5df1\u7684\u64cd\u4f5c\uff09\r\n    <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n    public<\/span> abstract<\/span> class<\/span> Observer\r\n    {\r\n        \r\n       \r\n        <\/span>public<\/span> abstract<\/span> void<\/span> Change(Subject Item);\r\n    }\r\n\r\n    <\/span>\/\/\/<\/span> <summary><\/span>\r\n    \/\/\/<\/span> \u5177\u4f53\u4e3b\u9898\u89d2\u8272\uff0c\u5b9e\u73b0\u62bd\u8c61\u89d2\u8272\u62bd\u8c61\u65b9\u6cd5\r\n    <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n    public<\/span> class<\/span> CallChargeSubject : Subject\r\n    {\r\n        <\/span>public<\/span> CallChargeSubject( int<\/span> balance) : base<\/span>( balance )\r\n        {\r\n\r\n        }\r\n       \r\n        <\/span>public<\/span> override<\/span> void<\/span> Adds(Observer observer)\r\n        {\r\n            observers.Add(observer);\r\n        }\r\n\r\n       \r\n\r\n        <\/span>public<\/span> override<\/span> void<\/span> Removes(Observer observer)\r\n        {\r\n            observers.Remove(observer);\r\n        }\r\n    }\r\n\r\n    <\/span>\/\/\/<\/span> <summary><\/span>\r\n    \/\/\/<\/span> \u5177\u4f53\u89c2\u5bdf\u8005\r\n    <\/span>\/\/\/<\/span> <\/summary><\/span>\r\n    public<\/span> class<\/span> CallChargeObserver : Observer\r\n    {\r\n        <\/span>internal<\/span> string<\/span> Name;\r\n        <\/span>public<\/span> CallChargeObserver(string<\/span> name)  \r\n        {\r\n            Name <\/span>= name;\r\n        }\r\n        <\/span>public<\/span> override<\/span> void<\/span> Change(Subject Item)\r\n        {\r\n            Console.WriteLine($<\/span>"<\/span>{Name}\u60a8\u597d\uff0c\u60a8\u5f53\u524d\u8bdd\u8d39\u4f59\u989d\u4e3a\uff1a{Item.Balance},\u4e3a\u4e86\u907f\u514d\u540e\u7eed\u4e3a\u60a8\u5e26\u6765\u4e0d\u4fbf\u8bf7\u53ca\u65f6\u5145\u503c!<\/span>"<\/span>);\r\n        }\r\n    }\r\n}<\/span><\/pre> \n <\/div> \n 
 <\/p> \n 
 \n  
namespace<\/span> Observer_Pattern\r\n{\r\n    <\/span>class<\/span> Program\r\n    {\r\n        <\/span>static<\/span> void<\/span> Main(string<\/span>[] args)\r\n        {\r\n            Subject subject <\/span>= new<\/span> CallChargeSubject(10<\/span>);\r\n            subject.Adds(<\/span>new<\/span> CallChargeObserver("<\/span>\u5f20\u4e09<\/span>"<\/span>));\r\n            subject.Adds(<\/span>new<\/span> CallChargeObserver("<\/span>\u674e\u56db<\/span>"<\/span>));\r\n            subject.Notice();\r\n        }\r\n    }\r\n}<\/span><\/pre> \n <\/div> \n 
 <\/p> \n 
\u4f7f\u7528\u573a\u666f\u53ca\u4f18\u7f3a\u70b9<\/strong><\/h2> \n 
\u4e00\u3001\u4f7f\u7528\u573a\u666f<\/strong><\/h3> \n 
1\u3001\u4e00\u4e2a\u62bd\u8c61\u6a21\u578b\u6709\u4e24\u4e2a\u65b9\u9762\uff0c\u5176\u4e2d\u4e00\u4e2a\u65b9\u9762\u4f9d\u8d56\u4e8e\u53e6\u4e00\u4e2a\u65b9\u9762\u3002\u5c06\u8fd9\u4e9b\u65b9\u9762\u5c01\u88c5\u5728\u72ec\u7acb\u7684\u5bf9\u8c61\u4e2d\u4f7f\u5b83\u4eec\u53ef\u4ee5\u5404\u81ea\u72ec\u7acb\u5730\u6539\u53d8\u548c\u590d\u7528<\/strong><\/p> \n 
2\u3001\u5f53\u5bf9\u4e00\u4e2a\u5bf9\u8c61\u7684\u6539\u53d8\u9700\u8981\u540c\u65f6\u505a\u51fa\u6539\u53d8\u7684\u65f6\u5019\uff0c\u800c\u53c8\u4e0d\u77e5\u9053\u5177\u4f53\u6709\u591a\u5c11\u5bf9\u8c61\u9700\u8981\u5f85\u6539\u53d8\u7684\u60c5\u51b5\u4e0b\u3002<\/strong><\/p> \n 
3\u3001\u4e00\u4e2a\u5bf9\u8c61\u5fc5\u987b\u901a\u77e5\u5176\u4ed6\u5bf9\u8c61\uff0c\u4f46\u662f\u5e76\u4e0d\u77e5\u9053\u8fd9\u4e9b\u5bf9\u8c61\u662f\u8c01\u3002<\/strong><\/p> \n 
\u4e8c\u3001\u4f18\u70b9<\/strong><\/h3> \n 
1\u3001\u89c2\u5bdf\u8005\u548c\u88ab\u89c2\u5bdf\u8005\u76f4\u63a5\u677e\u8026\u5408\uff0c\u4f9d\u8d56\u4e8e\u62bd\u8c61\u800c\u4e0d\u662f\u5177\u4f53\u5b9e\u73b0<\/strong><\/p> \n 
2\u3001\u5efa\u7acb\u4e86\u4e00\u5957\u89e6\u53d1\u7684\u8ba2\u9605\u53d1\u5e03\u673a\u5236\u3002<\/strong><\/p> \n 
\u4e09\u3001\u7f3a\u70b9<\/strong><\/h3> \n 
1\u3001\u5982\u679c\u4e00\u4e2a\u88ab\u89c2\u5bdf\u8005\u6709\u5f88\u591a\u89c2\u5bdf\u8005\u7684\u8bdd\uff0c\u53d8\u5316\u901a\u77e5\u6240\u6709\u89c2\u5bdf\u8005\u9700\u8981\u82b1\u8d39\u5f88\u591a\u7684\u65f6\u95f4<\/strong><\/p> \n 
2\u3001\u89c2\u5bdf\u8005\u548c\u88ab\u89c2\u5bdf\u8005\u4e4b\u95f4\u6709\u5faa\u73af\u4f9d\u8d56\u7684\u8bdd\uff0c\u53d8\u5316\u89e6\u53d1\u4e4b\u540e\u4f1a\u9020\u6210\u5faa\u73af\u8c03\u7528\u3002\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u3002<\/strong><\/p> \n 
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