Merge pull request #11014 from abpframework/empty-hosting-environment

When IWebHostEnvironment is not injected, hostGetHostingEnvironment will return an empty one instead of throwing exception

framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/AbpAspNetCoreServiceCollectionExtensions.cs

@@ -1,4 +1,6 @@
-using Microsoft.AspNetCore.Hosting;
+using System.Linq;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Hosting;
 
 namespace Microsoft.Extensions.DependencyInjection
 {
@@ -6,7 +8,17 @@ namespace Microsoft.Extensions.DependencyInjection
     {
         public static IWebHostEnvironment GetHostingEnvironment(this IServiceCollection services)
         {
-            return services.GetSingletonInstance<IWebHostEnvironment>();
+            var hostingEnvironment = services.GetSingletonInstanceOrNull<IWebHostEnvironment>();
+
+            if (hostingEnvironment == null)
+            {
+                return new EmptyHostingEnvironment()
+                {
+                    EnvironmentName = Environments.Development
+                };
+            }
+
+            return hostingEnvironment;
         }
     }
 }

framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/EmptyHostingEnvironment.cs

@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.FileProviders;
+
+namespace Microsoft.Extensions.DependencyInjection;
+
+internal class EmptyHostingEnvironment : IWebHostEnvironment
+{
+    public string EnvironmentName { get; set; }
+
+    public string ApplicationName { get; set; }
+
+    public string WebRootPath { get; set; }
+
+    public IFileProvider WebRootFileProvider { get; set; }
+
+    public string ContentRootPath { get; set; }
+
+    public IFileProvider ContentRootFileProvider { get; set; }
+}