Created and implemented ExceptionHttpStatusCodeOptions

src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/DefaultExceptionToErrorInfoConverter.cs

@@ -111,7 +111,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
 
             var codeNamespace = exceptionWithErrorCode.Code.Split(':')[0];
 
-            var localizationResourceType = _localizationOptions.CodeNamespaceMappings.GetOrDefault(codeNamespace);
+            var localizationResourceType = _localizationOptions.ErrorCodeNamespaceMappings.GetOrDefault(codeNamespace);
             if (localizationResourceType == null)
             {
                 return;

src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/DefaultHttpExceptionStatusCodeFinder.cs

@@ -1,19 +1,39 @@
 using System;
+using System.Collections.Generic;
 using System.Net;
 using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Options;
 using Volo.Abp.Authorization;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.Domain.Entities;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Validation;
 
 namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
 {
     public class DefaultHttpExceptionStatusCodeFinder : IHttpExceptionStatusCodeFinder, ITransientDependency
     {
+        protected ExceptionHttpStatusCodeOptions Options { get; }
+
+        public DefaultHttpExceptionStatusCodeFinder(
+            IOptions<ExceptionHttpStatusCodeOptions> options)
+        {
+            Options = options.Value;
+        }
+
         public virtual HttpStatusCode GetStatusCode(HttpContext httpContext, Exception exception)
         {
             //TODO: If the exception has error code than we can determine the exception from it!
 
+            if (exception is IHasErrorCode exceptionWithErrorCode && 
+                !exceptionWithErrorCode.Code.IsNullOrWhiteSpace())
+            {
+                if (Options.ErrorCodeToHttpStatusCodeMappings.TryGetValue(exceptionWithErrorCode.Code, out var status))
+                {
+                    return status;
+                }
+            }
+
             if (exception is AbpAuthorizationException)
             {
                 return httpContext.User.Identity.IsAuthenticated

src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/ExceptionHttpStatusCodeOptions.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using System.Net;
+
+namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
+{
+    public class ExceptionHttpStatusCodeOptions
+    {
+        public IDictionary<string, HttpStatusCode> ErrorCodeToHttpStatusCodeMappings { get; }
+
+        public ExceptionHttpStatusCodeOptions()
+        {
+            ErrorCodeToHttpStatusCodeMappings = new Dictionary<string, HttpStatusCode>();
+        }
+
+        public void Map(string errorCode, HttpStatusCode httpStatusCode)
+        {
+            ErrorCodeToHttpStatusCodeMappings[errorCode] = httpStatusCode;
+        }
+    }
+}

src/Volo.Abp.Localization/Volo/Abp/Localization/ExceptionHandling/ExceptionLocalizationOptions.cs

@@ -5,16 +5,16 @@ namespace Volo.Abp.Localization.ExceptionHandling
 {
     public class ExceptionLocalizationOptions
     {
-        public Dictionary<string, Type> CodeNamespaceMappings { get; }
+        public Dictionary<string, Type> ErrorCodeNamespaceMappings { get; }
 
         public ExceptionLocalizationOptions()
         {
-            CodeNamespaceMappings = new Dictionary<string, Type>();
+            ErrorCodeNamespaceMappings = new Dictionary<string, Type>();
         }
 
-        public void MapCodeNamespace(string codeNamespace, Type type)
+        public void MapCodeNamespace(string errorCodeNamespace, Type type)
         {
-            CodeNamespaceMappings[codeNamespace] = type;
+            ErrorCodeNamespaceMappings[errorCodeNamespace] = type;
         }
     }
 }