\uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d(Object-Oriented Programming, OOP)\uc740 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \ud504\ub85c\uadf8\ub798\ubc0d \ud328\ub7ec\ub2e4\uc784\uc785\ub2c8\ub2e4. OOP\uc758 \ubaa9\ud45c\ub294 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \uad6c\uc870\ub97c \uba85\ud655\ud788 \ud558\uace0, \ucf54\ub4dc\uc758 \uc7ac\uc0ac\uc6a9\uc131\uc744 \uadf9\ub300\ud654\ud558\uba70, \uc720\uc9c0 \ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ud558\uae30 \uc704\ud568\uc785\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c\ub294 OOP\uc758 \ud575\uc2ec \uc6d0\uce59\uacfc \uc758\uc874\uc131 \uc8fc\uc785(Dependency Injection, DI)\uc758 \uc5ed\ud560\uc5d0 \ub300\ud574 \uae4a\uc774 \uc788\uac8c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
OOP\uc758 \ud575\uc2ec \uc6d0\uce59\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
public class BankAccount {\n private decimal balance;\n\n public void Deposit(decimal amount) {\n balance += amount;\n }\n\n public void Withdraw(decimal amount) {\n if (amount > balance) throw new InvalidOperationException(\"Insufficient funds.\");\n balance -= amount;\n }\n\n public decimal GetBalance() {\n return balance;\n }\n}<\/code><\/pre>\n1.2 \uc0c1\uc18d\uc758 \uc608<\/h3>\npublic class Animal {\n public virtual void Speak() {\n Console.WriteLine(\"Animal sound\");\n }\n}\n\npublic class Dog : Animal {\n public override void Speak() {\n Console.WriteLine(\"Bark\");\n }\n}<\/code><\/pre>\n1.3 \ub2e4\ud615\uc131\uc758 \uc608<\/h3>\npublic void MakeAnimalSpeak(Animal animal) {\n animal.Speak();\n}\n\nMakeAnimalSpeak(new Dog()); \/\/ Bark<\/code><\/pre>\n1.4 \ucd94\uc0c1\ud654\uc758 \uc608<\/h3>\npublic abstract class Shape {\n public abstract double Area();\n}\n\npublic class Circle : Shape {\n public double Radius { get; set; }\n\n public override double Area() {\n return Math.PI * Radius * Radius;\n }\n}<\/code><\/pre>\n2. \uc758\uc874\uc131 \uc8fc\uc785(Dependency Injection)<\/h2>\n
\uc758\uc874\uc131 \uc8fc\uc785\uc740 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub514\uc790\uc778 \ud328\ud134 \uc911 \ud558\ub098\ub85c, \uac1d\uccb4\uac00 \ub2e4\ub978 \uac1d\uccb4\uc5d0 \uc758\uc874\ud558\ub294 \ubc29\uc2dd\uc744 \uad00\ub9ac\ud558\ub294 \uae30\ubc95\uc785\ub2c8\ub2e4. DI\ub294 \uac1d\uccb4\uc758 \uc0dd\uc131\uacfc \uc758\uc874\uc131 \uad00\ub9ac\ub97c \uc678\ubd80\ub85c \ubd84\ub9ac\ud558\uc5ec, \ucf54\ub4dc\uc758 \uacb0\ud569\ub3c4\ub97c \ub0ae\ucd94\uace0, \ud14c\uc2a4\ud2b8 \uc6a9\uc774\uc131\uc744 \ub192\uc785\ub2c8\ub2e4. DI\uc758 \uc8fc\ub41c \ubaa9\ud45c\ub294 \ud074\ub798\uc2a4\uac00 \ub2e4\ub978 \ud074\ub798\uc2a4\uc640\uc758 \uc758\uc874\uc131\uc744 \uc904\uc5ec, \uacb0\ud569\ub3c4\ub97c \ub0ae\ucd94\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n
2.1 \uc758\uc874\uc131 \uc8fc\uc785\uc758 \uc911\uc694\uc131<\/h3>\n
\uc758\uc874\uc131 \uc8fc\uc785\uc758 \uc911\uc694\uc131\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\n- **\uc720\uc9c0\ubcf4\uc218 \uc6a9\uc774\uc131**: \uac1d\uccb4 \uac04\uc758 \uad00\uacc4\uac00 \uba85\ud655\ud574\uc9c0\ubbc0\ub85c, \ucf54\ub4dc\uc758 \ubcc0\uacbd\uc774 \uc6a9\uc774\ud569\ub2c8\ub2e4.<\/li>\n
- **\ud14c\uc2a4\ud2b8 \uc6a9\uc774\uc131**: Mock \uac1d\uccb4\ub97c \uc0ac\uc6a9\ud574 \uc758\uc874\uc131 \uc8fc\uc785\uc744 \ud1b5\ud574 \ub2e8\uc704 \ud14c\uc2a4\ud2b8\ub97c \uc27d\uac8c \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n
- **\uc7ac\uc0ac\uc6a9\uc131 \uc99d\uac00**: \ub3c5\ub9bd\uc801\uc778 \uac1d\uccb4\ub85c \uc124\uacc4\ub428\uc73c\ub85c\uc368 \ucf54\ub4dc\uc758 \uc7ac\uc0ac\uc6a9\uc131\uc774 \uc99d\uac00\ud569\ub2c8\ub2e4.<\/li>\n
- **\uc720\uc5f0\uc131 \ubc0f \ud655\uc7a5\uc131**: \uc0c8\ub85c\uc6b4 \uae30\ub2a5 \ucd94\uac00\ub098 \ubcc0\uacbd\uc774 \uc26c\uc6cc\uc9d1\ub2c8\ub2e4.<\/li>\n<\/ul>\n
2.2 \uc758\uc874\uc131 \uc8fc\uc785\uc758 \uc885\ub958<\/h3>\n
\uc758\uc874\uc131 \uc8fc\uc785\uc758 \uc885\ub958\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\n- \uc0dd\uc131\uc790 \uc8fc\uc785(Constructor Injection)<\/strong>: \uc758\uc874\ud558\ub294 \uac1d\uccb4\ub97c \uc0dd\uc131\uc790\uc758 \ub9e4\uac1c\ubcc0\uc218\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4.<\/li>\n
- \uc124\uc815\uc790 \uc8fc\uc785(Setter Injection)<\/strong>: \uc758\uc874\ud558\ub294 \uac1d\uccb4\ub97c setter \uba54\uc11c\ub4dc\ub97c \ud1b5\ud574 \uc8fc\uc785\ud569\ub2c8\ub2e4.<\/li>\n
- \uc778\ud130\ud398\uc774\uc2a4 \uc8fc\uc785(Interface Injection)<\/strong>: \uc758\uc874\ud558\ub294 \uac1d\uccb4\uc5d0 \uc8fc\uc785 \uba54\uc11c\ub4dc\ub97c \uc815\uc758\ud55c \uc778\ud130\ud398\uc774\uc2a4\ub97c \uad6c\ud604\ud558\uac8c \ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n
2.3 \uc0dd\uc131\uc790 \uc8fc\uc785\uc758 \uc608<\/h3>\npublic class PaymentService {\n private readonly IPaymentGateway paymentGateway;\n\n public PaymentService(IPaymentGateway paymentGateway) {\n this.paymentGateway = paymentGateway;\n }\n\n public void ProcessPayment(decimal amount) {\n paymentGateway.Process(amount);\n }\n}<\/code><\/pre>\n2.4 \uc124\uc815\uc790 \uc8fc\uc785\uc758 \uc608<\/h3>\npublic class NotificationService {\n private INotificationSender notificationSender;\n\n public void SetNotificationSender(INotificationSender sender) {\n notificationSender = sender;\n }\n\n public void SendNotification(string message) {\n notificationSender.Send(message);\n }\n}<\/code><\/pre>\n2.5 \uc778\ud130\ud398\uc774\uc2a4 \uc8fc\uc785\uc758 \uc608<\/h3>\npublic interface IHasDependency {\n void InjectDependency(IDependency dependency);\n}\n\npublic class SomeService : IHasDependency {\n private IDependency dependency;\n\n public void InjectDependency(IDependency dependency) {\n this.dependency = dependency;\n }\n}<\/code><\/pre>\n3. \uc758\uc874\uc131 \uc8fc\uc785 \ud504\ub808\uc784\uc6cc\ud06c<\/h2>\n
\ub9ce\uc740 \ud604\ub300 C# \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c DI\ub97c \uad6c\ud604\ud558\uae30 \uc704\ud574 \ub2e4\uc591\ud55c DI \ud504\ub808\uc784\uc6cc\ud06c\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud504\ub808\uc784\uc6cc\ud06c\ub294 \uac1d\uccb4\uc758 \uc0dd\uba85\uc8fc\uae30 \uad00\ub9ac, \uc758\uc874\uc131 \ud574\uc18c, \uc2a4\ucf54\ud504 \uad00\ub9ac \ub4f1 \ub2e4\uc591\ud55c \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n
\ub2e4\uc74c\uc740 C#\uc5d0\uc11c \uc778\uae30 \uc788\ub294 \uc758\uc874\uc131 \uc8fc\uc785 \ud504\ub808\uc784\uc6cc\ud06c\uc785\ub2c8\ub2e4:<\/p>\n
\n- Autofac<\/strong>: \ud655\uc7a5\uc131\uacfc \uc720\uc5f0\uc131\uc774 \ub6f0\uc5b4\ub09c \uac15\ub825\ud55c DI \ucee8\ud14c\uc774\ub108\uc785\ub2c8\ub2e4.<\/li>\n
- Unity<\/strong>: Microsoft\uc5d0\uc11c \uac1c\ubc1c\ub41c DI \ucee8\ud14c\uc774\ub108\ub85c, \uac04\ud3b8\ud55c \uc124\uc815\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/li>\n
- Ninject<\/strong>: \ud50c\ub7ec\uadf8\uc778\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ub2e4\uc591\ud55c \uae30\ub2a5\uc774 \uc788\ub294 DI \ucee8\ud14c\uc774\ub108\uc785\ub2c8\ub2e4.<\/li>\n
- ASP.NET Core DI<\/strong>: ASP.NET Core\uc758 \uae30\ubcf8 \ub0b4\uc7a5 DI \ud504\ub808\uc784\uc6cc\ud06c\ub85c, \uac04\ub2e8\ud55c \uc124\uc815\uc73c\ub85c DI\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n
3.1 ASP.NET Core DI\uc758 \uc608<\/h3>\npublic class Startup {\n public void ConfigureServices(IServiceCollection services) {\n services.AddScoped();\n services.AddScoped();\n }\n}\n\npublic class HomeController : Controller {\n private readonly PaymentService paymentService;\n\n public HomeController(PaymentService paymentService) {\n this.paymentService = paymentService;\n }\n}<\/paymentservice><\/ipaymentgateway,><\/code><\/pre>\n4. \uacb0\ub860<\/h2>\n
\uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d(OOP)\uc740 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc758 \ud575\uc2ec \uc6d0\uce59\uc744 \uc81c\uacf5\ud558\uc5ec \ucf54\ub4dc\uc758 \uc774\ud574\uc640 \uc720\uc9c0 \ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ud569\ub2c8\ub2e4. \uc758\uc874\uc131 \uc8fc\uc785(Dependency Injection)\uc740 \uc774\ub7ec\ud55c OOP \uc6d0\uce59\uc744 \ub354\uc6b1 \uac15\ud654\uc2dc\ucf1c, \uacb0\ud569\ub3c4\ub97c \ub0ae\ucd94\uace0, \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \ud488\uc9c8\uc744 \ub192\uc774\ub294 \uc911\uc694\ud55c \uae30\ubc95\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ubc95\ub4e4\uc744 \uc774\ud574\ud558\uace0 \ud65c\uc6a9\ud558\ub294 \uac83\uc740 \uac1c\ubc1c\uc790\uc5d0\uac8c \ub9ce\uc740 \uc774\uc810\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n
\uc774 \uae00\uc744 \ud1b5\ud574 \uac1d\uccb4\uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \ud575\uc2ec \uc6d0\uce59\uacfc \uc758\uc874\uc131 \uc8fc\uc785\uc5d0 \ub300\ud55c \uae4a\uc740 \uc774\ud574\ub97c \ub3d5\uace0\uc790 \ud558\uc600\uc73c\uba70, \uc2e4\uc81c \ucf54\ub4dc \uc608\uc81c\ub97c \ud1b5\ud574 \uc801\uc6a9 \ubc29\ubc95\uc744 \uc81c\uc2dc\ud558\uc600\uc2b5\ub2c8\ub2e4. \uc55e\uc73c\ub85c\uc758 \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c OOP\uc640 DI\ub97c \ud1b5\ud574 \ub354\uc6b1 \uacac\uace0\ud55c \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uac1c\ubc1c\ud558\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"