处理日期

DOAN.Admin.WebApi/Program.cs

@@ -13,6 +13,7 @@ using DOAN.Infrastructure.WebExtensions;
 using DOAN.ServiceCore.Signalr;
 using DOAN.ServiceCore.SqlSugar;
 using Microsoft.Extensions.FileProviders;
+using static Infrastructure.Converter.JsonConverterUtil;
 
 var builder = WebApplication.CreateBuilder(args);
 // NLog: Setup NLog for Dependency injection
@@ -72,6 +73,7 @@ builder.Services.AddMvc(options =>
     options.JsonSerializerOptions.Converters.Add(new JsonConverterUtil.DateTimeConverter());
     options.JsonSerializerOptions.Converters.Add(new JsonConverterUtil.DateTimeNullConverter());
     options.JsonSerializerOptions.Converters.Add(new JsonConverterUtil.DateTimeArrayConverter()); 
+    options.JsonSerializerOptions.Converters.Add(new JsonConverterUtil.DateTimeNullableArrayConverter()); 
     options.JsonSerializerOptions.Converters.Add(new StringConverter());
     //PropertyNamingPolicy属性用于前端传过来的属性的格式策略，目前内置的仅有一种策略CamelCase
     options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;

Infrastructure/Converter/JsonConverterUtil.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
@@ -6,6 +7,9 @@ namespace Infrastructure.Converter
 {
     public class JsonConverterUtil
     {
+        /// <summary>
+        /// 你提供的转换器是针对单个 DateTime 或 DateTime? 的，而日期数组是一个集合类型（如 DateTime[] 或 List<DateTime>）。JSON 转换器需要明确知道如何处理集合中的每个元素。
+        /// </summary>
         public class DateTimeNullConverter : JsonConverter<DateTime?>
         {
             public override DateTime? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
@@ -34,7 +38,7 @@ namespace Infrastructure.Converter
             return null;
         }
 
-        //******************************DOAN****************************************
+        //******************************DOAN   JSON 转换器处理日期数组****************************************
         public class DateTimeArrayConverter : JsonConverter<DateTime>
         {
             public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
@@ -54,5 +58,66 @@ namespace Infrastructure.Converter
                 writer.WriteStringValue(value.ToString("yyyy-MM-ddTHH:mm:ss"));
             }
         }
+
+        public class DateTimeNullableArrayConverter : JsonConverter<DateTime?[]>
+        {
+            public override DateTime?[] Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+            {
+                if (reader.TokenType != JsonTokenType.StartArray)
+                {
+                    throw new JsonException("Expected start of array.");
+                }
+
+                var dates = new List<DateTime?>();
+
+                while (reader.Read())
+                {
+                    if (reader.TokenType == JsonTokenType.EndArray)
+                    {
+                        return dates.ToArray();
+                    }
+
+                    if (reader.TokenType == JsonTokenType.String)
+                    {
+                        var dateString = reader.GetString();
+                        if (string.IsNullOrEmpty(dateString))
+                        {
+                            dates.Add(null);
+                        }
+                        else if (DateTime.TryParse(dateString, out var date))
+                        {
+                            dates.Add(date);
+                        }
+                        else
+                        {
+                            throw new JsonException($"Invalid date format: {dateString}");
+                        }
+                    }
+                    else
+                    {
+                        throw new JsonException("Expected string value in array.");
+                    }
+                }
+
+                throw new JsonException("Unexpected end of JSON.");
+            }
+
+            public override void Write(Utf8JsonWriter writer, DateTime?[] value, JsonSerializerOptions options)
+            {
+                writer.WriteStartArray();
+                foreach (var date in value)
+                {
+                    if (date.HasValue)
+                    {
+                        writer.WriteStringValue(date.Value.ToString("yyyy-MM-dd HH:mm:ss"));
+                    }
+                    else
+                    {
+                        writer.WriteNullValue();
+                    }
+                }
+                writer.WriteEndArray();
+            }
+        }
     }
 }