初始化项目

LogStudy.WebApp/Controllers/ValuesController.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+
+namespace LogStudy.WebApp.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class ValuesController : ControllerBase
+    {
+        private ILogger _logger;
+        public ValuesController(ILogger<ValuesController> logger)
+        {
+            _logger = logger;
+        }
+
+        // GET api/values
+        [HttpGet]
+        public ActionResult<IEnumerable<string>> Get()
+        {
+            _logger.LogCritical("我是测试");
+
+            _logger.LogDebug("我是Debug测试");
+
+            return new string[] { "value1", "value2" };
+        }
+
+        // GET api/values/5
+        [HttpGet("{id}")]
+        public ActionResult<string> Get(int id)
+        {
+            return "value";
+        }
+
+        // POST api/values
+        [HttpPost]
+        public void Post([FromBody] string value)
+        {
+        }
+
+        // PUT api/values/5
+        [HttpPut("{id}")]
+        public void Put(int id, [FromBody] string value)
+        {
+        }
+
+        // DELETE api/values/5
+        [HttpDelete("{id}")]
+        public void Delete(int id)
+        {
+        }
+    }
+}

LogStudy.WebApp/LogStudy.WebApp.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.App" />
+    <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.2.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.EventLog" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.EventSource" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.TraceSource" Version="2.2.0" />
+  </ItemGroup>
+
+</Project>

LogStudy.WebApp/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+
+namespace LogStudy.WebApp
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            CreateWebHostBuilder(args).Build().Run();
+        }
+
+        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .ConfigureLogging((hostbuildContext, logBuild) => {
+                    var config = hostbuildContext.Configuration;
+                    var ev = hostbuildContext.HostingEnvironment;
+
+                    logBuild
+                        .AddConsole()
+                        .AddDebug()
+                        .AddEventLog()
+                        .AddEventSourceLogger()
+                        .AddTraceSource("NetCoreDemo")
+                        .SetMinimumLevel(LogLevel.Information);
+                })
+                .UseStartup<Startup>();
+    }
+}

LogStudy.WebApp/Properties/launchSettings.json

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+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false, 
+    "anonymousAuthentication": true, 
+    "iisExpress": {
+      "applicationUrl": "http://localhost:51764",
+      "sslPort": 0
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "api/values",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "LogStudy.WebApp": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "api/values",
+      "applicationUrl": "http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

LogStudy.WebApp/Startup.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+
+namespace LogStudy.WebApp
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+            }
+
+            app.UseMvc();
+        }
+    }
+}

LogStudy.WebApp/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}

LogStudy.WebApp/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

LogStudy.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29418.71
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LogStudy.WebApp", "LogStudy.WebApp\LogStudy.WebApp.csproj", "{8516CD13-0513-46AF-897F-05FCD66933A2}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8516CD13-0513-46AF-897F-05FCD66933A2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8516CD13-0513-46AF-897F-05FCD66933A2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8516CD13-0513-46AF-897F-05FCD66933A2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8516CD13-0513-46AF-897F-05FCD66933A2}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {4D9A3A36-98D0-498C-B78A-2E5CFC5195AC}
+	EndGlobalSection
+EndGlobal