dependency injection

BlazorApp/AspNetCoreMVC/Controllers/HomeController.cs

@@ -8,13 +8,22 @@ namespace AspNetCoreMVC.Controllers
     [Route("[controller]")] // 컨트롤러 이름 자동으로 따라감
     public class HomeController : Controller
     {
-        private readonly ILogger<HomeController> _logger;
+        private IEnumerable<IBaseLogger> _baseLoggers;
 
-        public HomeController(ILogger<HomeController> logger)
+        public HomeController(IEnumerable<IBaseLogger> loggers)
         {
-            _logger = logger;
+            _baseLoggers = loggers;
         }
 
+        //private readonly ILogger<HomeController> _logger;
+
+        //public HomeController(ILogger<HomeController> logger)
+        //{
+        //    _logger = logger;
+        //}
+
+        [Route("Index")]
+        [Route("/")]
         public IActionResult Index()
         {
             //string url = Url.Action("Privacy", "Home");
@@ -24,7 +33,25 @@ namespace AspNetCoreMVC.Controllers
 
             //return RedirectToAction("Privacy");
 
-            return View();
+            //return View();
+
+            //FileLogger logger = new FileLogger(new FileLogSetting("log.txt"));
+            //logger.Log("Log Test");
+
+            foreach (var logger in _baseLoggers)
+            {
+                logger.Log("DI Log Test");
+            }
+
+            return Ok();
+        }
+
+        [Route("DITest")]
+        public IActionResult ActionDITest([FromServices] IBaseLogger logger)
+        {
+            logger.Log("Log Test");
+
+            return Ok();
         }
 
         public IActionResult Test()

BlazorApp/AspNetCoreMVC/Models/Models.cs

@@ -25,4 +25,45 @@ namespace AspNetCoreMVC.Models
         [Display(Name = "Count")]
         public int Count { get; set; }
     }
+
+    public class FileLogSetting
+    {
+        private string _filename;
+        public FileLogSetting(string filename)
+        {
+            _filename = filename;
+        }
+    }
+
+    public class FileLogger : IBaseLogger
+    {
+        private FileLogSetting _setting;
+        public FileLogger(FileLogSetting settings)
+        {
+            _setting = settings;
+        }
+
+        public void Log(string log)
+        {
+            Console.WriteLine($"FileLog Ok {log}");
+        }
+    }
+
+    public class DbLogger : IBaseLogger
+    {
+        public DbLogger()
+        {
+            
+        }
+
+        public void Log(string log)
+        {
+            Console.WriteLine($"DBLog Ok {log}");
+        }
+    }
+
+    public interface IBaseLogger
+    {
+        void Log(string log);
+    }
 }

BlazorApp/AspNetCoreMVC/Program.cs

@@ -1,3 +1,5 @@
+using AspNetCoreMVC.Models;
+
 namespace AspNetCoreMVC
 {
     public class Program
@@ -9,6 +11,10 @@ namespace AspNetCoreMVC
             // Add services to the container.
             builder.Services.AddControllersWithViews();
 
+            builder.Services.AddSingleton<IBaseLogger, FileLogger>();
+            builder.Services.AddSingleton<IBaseLogger, DbLogger>();
+            builder.Services.AddSingleton(new FileLogSetting("log.txt"));
+
             var app = builder.Build();
 
             //app.UseStaticFiles();