更新

HttpClientStudy.UnitTest/startup.cs

@@ -31,6 +31,10 @@ namespace HttpClientStudy.UnitTest
         /// <param name="hostBuilder"></param>
         public void ConfigureHost(IHostBuilder hostBuilder)
         {
+            hostBuilder
+                .ConfigureHostConfiguration(builder => { })
+                .ConfigureAppConfiguration((context, builder) => { });
+
             //hostBuilder.ConfigureWebHost(webHostBuilder =>
             //{
             //    webHostBuilder
@@ -56,7 +60,7 @@ namespace HttpClientStudy.UnitTest
         /// 注册服务：必须
         /// </summary>
         /// <param name="services"></param>
-        public void ConfigureServices(IServiceCollection services)
+        public void ConfigureServices(IServiceCollection services,HostBuilderContext context)
         {
             //services.AddTransient<IDependency, DependencyClass>();
         }