feat: 实现字典管理后端

src/Core/TakeoutSaaS.Shared.Web/Middleware/ExceptionHandlingMiddleware.cs

@@ -1,4 +1,6 @@
+using FluentValidation.Results;
 using Microsoft.AspNetCore.Http;
+using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using System.Text.Json;
@@ -7,6 +9,8 @@ using System.Collections.Generic;
 using TakeoutSaaS.Shared.Abstractions.Constants;
 using TakeoutSaaS.Shared.Abstractions.Exceptions;
 using TakeoutSaaS.Shared.Abstractions.Results;
+using FluentValidationException = FluentValidation.ValidationException;
+using SharedValidationException = TakeoutSaaS.Shared.Abstractions.Exceptions.ValidationException;
 
 namespace TakeoutSaaS.Shared.Web.Middleware;
 
@@ -79,9 +83,27 @@ public sealed class ExceptionHandlingMiddleware(RequestDelegate next, ILogger<Ex
     {
         return exception switch
         {
-            ValidationException validationException => (
+            DbUpdateConcurrencyException => (
+                StatusCodes.Status409Conflict,
+                ApiResponse<object>.Error(
+                    ErrorCodes.Conflict,
+                    "数据已被他人修改，请刷新后重试",
+                    new Dictionary<string, string[]>
+                    {
+                        ["RowVersion"] = ["数据已被他人修改，请刷新后重试"]
+                    })),
+            UnauthorizedAccessException => (
+                StatusCodes.Status403Forbidden,
+                ApiResponse<object>.Error(ErrorCodes.Forbidden, "无权访问该资源")),
+            SharedValidationException validationException => (
                 StatusCodes.Status422UnprocessableEntity,
                 ApiResponse<object>.Error(ErrorCodes.ValidationFailed, "请求参数验证失败", validationException.Errors)),
+            FluentValidationException fluentValidationException => (
+                StatusCodes.Status422UnprocessableEntity,
+                ApiResponse<object>.Error(
+                    ErrorCodes.ValidationFailed,
+                    "请求参数验证失败",
+                    NormalizeValidationErrors(fluentValidationException.Errors))),
             BusinessException businessException => (
                 // 1. 仅当业务错误码在白名单且位于 400-499 时透传，否则回退 400
                 AllowedHttpErrorCodes.Contains(businessException.ErrorCode) && businessException.ErrorCode is >= 400 and < 500
@@ -93,4 +115,25 @@ public sealed class ExceptionHandlingMiddleware(RequestDelegate next, ILogger<Ex
                 ApiResponse<object>.Error(ErrorCodes.InternalServerError, "服务器开小差啦，请稍后再试"))
         };
     }
+
+    private static IDictionary<string, string[]> NormalizeValidationErrors(IEnumerable<ValidationFailure> failures)
+    {
+        var result = new Dictionary<string, List<string>>(StringComparer.OrdinalIgnoreCase);
+        foreach (var failure in failures)
+        {
+            var key = string.IsNullOrWhiteSpace(failure.PropertyName) ? "request" : failure.PropertyName;
+            if (!result.TryGetValue(key, out var list))
+            {
+                list = new List<string>();
+                result[key] = list;
+            }
+
+            if (!string.IsNullOrWhiteSpace(failure.ErrorMessage))
+            {
+                list.Add(failure.ErrorMessage);
+            }
+        }
+
+        return result.ToDictionary(pair => pair.Key, pair => pair.Value.Distinct().ToArray(), StringComparer.OrdinalIgnoreCase);
+    }
 }