运行测试时，自动启动WebApi项目。

HttpClientStudy.Config/ConfigFiles/Config.json

@@ -1,5 +1,6 @@
 {
   "WebApi": {
-    "BaseUrl": "http://localhost:5189"
+    "BaseUrl": "http://localhost:5189",
+    "WebAppMutexName": "HttpClientStudy.WebApp"
   } 
 }

HttpClientStudy.Config/WebApiConfig.cs

@@ -2,6 +2,8 @@
 {
     public class WebApiConfig
     {
-        public string BaseUrl { get; set; }
+        public string BaseUrl { get; set; } = "http://localhost:5189";
+
+        public string WebAppMutexName { get; set; } = "HttpClientStudy.WebApp";
     }
 }

HttpClientStudy.Config/WebApiConfigExtensions.cs

@@ -27,7 +27,7 @@ namespace HttpClientStudy.Config
         /// <summary>
         /// 添加WebApi配置文件
         /// </summary>
-        public static IConfigurationBuilder AddWebApiConfigration(this IConfigurationBuilder configuration)
+        public static IConfigurationBuilder AddWebApiConfiguration(this IConfigurationBuilder configuration)
         {
             configuration.AddJsonFile($"ConfigFiles/Config.json", optional: false, reloadOnChange: true);
             configuration.AddJsonFile($"ConfigFiles/Config.{System.Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")}.json", optional: true, reloadOnChange: true);
@@ -45,6 +45,11 @@ namespace HttpClientStudy.Config
             services.AddOptions();
 
             var configuration = services.BuildServiceProvider().GetService<IConfiguration>();
+            if (configuration == null)
+            {
+                throw new InvalidOperationException("Configuration is not configured.");
+            }
+
             services.Configure<WebApiConfig>(configuration.GetSection("WebApi"));
 
             return services;

HttpClientStudy.Config/WebApiConfigManager.cs

@@ -21,7 +21,7 @@ namespace HttpClientStudy.Config
         public static IOptionsMonitor<WebApiConfig> GetWebApiConfigOption()
         {
             ConfigurationBuilder configurationBuilder = new ConfigurationBuilder();
-            configurationBuilder.AddWebApiConfigration();
+            configurationBuilder.AddWebApiConfiguration();
 
             ServiceCollection services = new ServiceCollection();
             services.AddSingleton<IConfiguration>(configurationBuilder.Build());

HttpClientStudy.Core/GlobalUsings.cs

@@ -1,6 +1,7 @@
 global using System;
 global using System.Linq;
 global using System.Text;
+global using System.Threading;
 global using System.Threading.Tasks;
 global using System.Collections.Generic;
 

HttpClientStudy.UnitTest/ConfigTest/WebApiConfigTest.cs

@@ -19,21 +19,23 @@ namespace HttpClientStudy.UnitTest.ConfigTest
         public void WebApiOption_Test()
         {
             ConfigurationBuilder configurationBuilder = new ConfigurationBuilder();
-            configurationBuilder.AddWebApiConfigration();
+            configurationBuilder.AddWebApiConfiguration();
 
             IConfiguration configuration = configurationBuilder.Build();
 
             var services = new ServiceCollection();
-            services.AddSingleton<IConfiguration>(configuration);
+            services.AddSingleton(configuration);
             services.AddWebApiOptions();
 
             var provider = services.BuildServiceProvider();
-            IOptions<Config.WebApiConfig> webApiOptions = provider.GetService<IOptions<Config.WebApiConfig>>();
+            IOptions<WebApiConfig>? webApiOptions = provider.GetService<IOptions<WebApiConfig>>();
 
-            var webApiConfig = webApiOptions.Value;
+            var webApiConfig = webApiOptions?.Value;
 
             Assert.NotNull(webApiOptions);
+            Assert.NotNull(webApiConfig);
             Assert.NotEmpty(webApiConfig.BaseUrl);
+            Assert.NotEmpty(webApiConfig.WebAppMutexName);
         }
 
         [Fact]
@@ -46,6 +48,7 @@ namespace HttpClientStudy.UnitTest.ConfigTest
             var webApiConfig = webApiMonitor.CurrentValue;
 
             Assert.NotNull(webApiConfig);
+            Assert.NotEmpty(webApiConfig.WebAppMutexName);
         }
     }
 }

HttpClientStudy.UnitTest/StartupTest.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xunit;
+
+namespace HttpClientStudy.UnitTest
+{
+    public class StartupTest
+    {
+        [Fact]
+        public void StartWebApiProject()
+        {
+            var startup = new Startup();
+            startup.StartWebApiProject();
+        }
+    }
+}

HttpClientStudy.UnitTest/startup.cs

@@ -25,7 +25,7 @@ namespace HttpClientStudy.UnitTest
         /// <returns></returns>
         public IHostBuilder CreateHostBuilder()
         {
-            return Host.CreateDefaultBuilder() ;
+            return Host.CreateDefaultBuilder();
         }
 
         /// <summary>
@@ -34,16 +34,19 @@ namespace HttpClientStudy.UnitTest
         /// <param name="hostBuilder"></param>
         public void ConfigureHost(IHostBuilder hostBuilder)
         {
+            //确保启动webapi项目
+            StartWebApiProject();
+
             hostBuilder
                 //主机配置
-                .ConfigureHostConfiguration(builder => 
+                .ConfigureHostConfiguration(builder =>
                 {
 
                 })
                 //应用配置
-                .ConfigureAppConfiguration((context, builder) => 
-                { 
-                
+                .ConfigureAppConfiguration((context, builder) =>
+                {
+
                 });
 
             hostBuilder.ConfigureWebHost(webHostBuilder =>
@@ -71,9 +74,9 @@ namespace HttpClientStudy.UnitTest
         /// 注册服务：必须
         /// </summary>
         /// <param name="services"></param>
-        public void ConfigureServices(IServiceCollection services,HostBuilderContext context)
+        public void ConfigureServices(IServiceCollection services, HostBuilderContext context)
         {
-            Debugger.Log(1,"DI","ConfigureServices");
+            Debugger.Log(1, "DI", "ConfigureServices");
         }
 
         private class WebApiStartup
@@ -81,9 +84,56 @@ namespace HttpClientStudy.UnitTest
             public void ConfigureServices(IServiceCollection services) => services.AddLogging(lb => lb.AddXunitOutput());
 
             public void Configure(IApplicationBuilder app)
-            { 
+            {
                 app.Run(static context => context.Response.WriteAsync("xxxxxx"));
-            }  
+            }
+        }
+
+        /// <summary>
+        /// 启动webapi项目
+        /// (出现webapi项目启动命令行窗口)
+        /// </summary>
+        public void StartWebApiProject()
+        {
+            string projectAndMutexName = WebApiConfigManager.GetWebApiConfigOption().CurrentValue.WebAppMutexName;
+
+            //webapi项目不在运行状态则启动webapi项目
+            if (webAppIsRunningByMutex() == false)
+            {
+                //VS项目根目录
+                string vsProjectPath = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory)!.Parent!.Parent!.Parent!.Parent!.FullName;
+
+                //webapi项目根项目
+                string webApiProjectPath = Path.Combine(vsProjectPath, projectAndMutexName);
+
+                //启动命令信息
+                var prossInfo = new ProcessStartInfo("dotnet", $"run --project {webApiProjectPath}")
+                {
+                    UseShellExecute = true,
+                    CreateNoWindow = false,
+                    RedirectStandardOutput = false
+                };
+
+                //启动
+                Process.Start(prossInfo);
+            }
+
+            //由进程名判断
+            //bool webAppIsRunningByProcessName()
+            //{
+            //    return Process.GetProcessesByName(projectAndMutexName).ToList().Count == 0;
+            //}
+
+            //由互斥锁判断
+            bool webAppIsRunningByMutex()
+            {
+                //创建互斥锁
+                _ = new Mutex(true, projectAndMutexName, out bool createdResult);
+                
+                //互斥锁是否创建成功
+                return !createdResult;
+            }
+
         }
     }
 }

HttpClientStudy.WebApp/Controllers/ErrorDemoController.cs

@@ -35,9 +35,6 @@ namespace HttpClientStudy.WebApp.Controllers
         public IActionResult Error500()
         {
             throw new System.Exception("服务器异常");
-
-            var result = BaseResultUtil.Success("服务器异常");
-            return new JsonResult(result);
         }
     }
 }

HttpClientStudy.WebApp/Program.cs

@@ -1,8 +1,8 @@
 
 using System.Text;
-
-using HttpClientStudy.Model;
-using HttpClientStudy.Service;
+using System.Diagnostics;
+using System.Threading ;
+using System.Collections.Generic;
 
 using Microsoft.AspNetCore.Authentication.Cookies;
 using Microsoft.AspNetCore.Http.Features;
@@ -10,6 +10,10 @@ using Microsoft.AspNetCore.Server.Kestrel.Core;
 using Microsoft.IdentityModel.Tokens;
 using Microsoft.OpenApi.Models;
 
+using HttpClientStudy.Model;
+using HttpClientStudy.Service;
+using HttpClientStudy.Config;
+
 namespace HttpClientStudy.WebApp
 {
     /// <summary>
@@ -33,7 +37,7 @@ namespace HttpClientStudy.WebApp
             builder.Services.AddDistributedMemoryCache();
 
             //配置Session
-            builder.Services.AddSession(option => 
+            builder.Services.AddSession(option =>
             {
                 option.Cookie.Name = "HttpClientStudy";
                 option.IOTimeout = TimeSpan.FromHours(1);
@@ -41,7 +45,7 @@ namespace HttpClientStudy.WebApp
             });
 
             //配置Kestrel服务器选项
-            builder.Services.Configure<KestrelServerOptions>( option => 
+            builder.Services.Configure<KestrelServerOptions>(option =>
             {
                 //ASP.NET Core 3.0 之前的版本，AllowSynchronousIO 默认是开启的
                 //设置 true ：允许同步 IO 操作,这样允许接收Get请求中的请求体数据.但只能直接从流中读取，不能自动模型绑定。
@@ -49,7 +53,7 @@ namespace HttpClientStudy.WebApp
             });
 
             //配置Form表单提交选项
-            builder.Services.Configure<FormOptions>(options => 
+            builder.Services.Configure<FormOptions>(options =>
             {
                 //options.BufferBody = true;
                 options.MultipartBodyLengthLimit = long.MaxValue;
@@ -116,11 +120,11 @@ namespace HttpClientStudy.WebApp
             });
 
             //配置CORS跨域
-            builder.Services.AddCors(option => 
+            builder.Services.AddCors(option =>
             {
-                option.AddPolicy("AllowAll", builder => 
+                option.AddPolicy("AllowAll", builder =>
                 {
-                    builder.SetIsOriginAllowed(_ =>  true).AllowAnyMethod().AllowAnyHeader().AllowCredentials();
+                    builder.SetIsOriginAllowed(_ => true).AllowAnyMethod().AllowAnyHeader().AllowCredentials();
                 });
             });
 
@@ -174,7 +178,7 @@ namespace HttpClientStudy.WebApp
             #endregion
 
             var app = builder.Build();
-            
+
             #region 配置Http管道
 
             //耗时统计中间件