fix(util): preserve complex JSON values in data tables

2026-07-30 15:01:56 +08:00
parent 11e395aa0f
commit 5e6449cf1f
3 changed files with 238 additions and 0 deletions
@@ -9,6 +9,7 @@
 ******************************/
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Text;
 using System.Data;
@@ -154,6 +155,85 @@ namespace Lskj.Util
            return result;
        }
        /// <summary>
+        /// <para>说明：将可能包含对象或数组字段的网页行 JSON 转换为 DataTable</para>
+        /// <para>复杂字段所在列统一保留为字符串，纯标量列保持现有类型推断</para>
+        /// </summary>
+        /// <param name="json">顶层对象或对象数组 JSON</param>
+        /// <returns>DataTable.</returns>
+        public static DataTable ToDataTablePreservingComplexValues(string json)
+        {
+            if (string.IsNullOrWhiteSpace(json))
+            {
+                throw new ArgumentException("网页行 JSON 不能为空。", "json");
+            }
+
+            JToken root = JToken.Parse(json);
+            JArray rows;
+            if (root.Type == JTokenType.Array)
+            {
+                rows = (JArray)root;
+            }
+            else if (root.Type == JTokenType.Object)
+            {
+                rows = new JArray(root);
+            }
+            else
+            {
+                throw new JsonSerializationException("网页行 JSON 的顶层必须是对象或对象数组。");
+            }
+
+            HashSet<string> complexColumns = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+            foreach (JToken rowToken in rows)
+            {
+                if (rowToken.Type != JTokenType.Object)
+                {
+                    throw new JsonSerializationException("网页行 JSON 数组中的每一项都必须是对象。");
+                }
+
+                foreach (JProperty property in ((JObject)rowToken).Properties())
+                {
+                    if (property.Value.Type == JTokenType.Object || property.Value.Type == JTokenType.Array)
+                    {
+                        complexColumns.Add(property.Name);
+                    }
+                }
+            }
+
+            foreach (JObject row in rows.Children<JObject>())
+            {
+                foreach (JProperty property in row.Properties().ToList())
+                {
+                    if (!complexColumns.Contains(property.Name)
+                        || property.Value.Type == JTokenType.Null
+                        || property.Value.Type == JTokenType.Undefined)
+                    {
+                        continue;
+                    }
+
+                    string text;
+                    if (property.Value.Type == JTokenType.Object || property.Value.Type == JTokenType.Array)
+                    {
+                        text = property.Value.ToString(Formatting.None);
+                    }
+                    else if (property.Value.Type == JTokenType.String)
+                    {
+                        text = property.Value.Value<string>();
+                    }
+                    else
+                    {
+                        JValue scalar = property.Value as JValue;
+                        text = scalar == null || scalar.Value == null
+                            ? null
+                            : Convert.ToString(scalar.Value, CultureInfo.InvariantCulture);
+                    }
+
+                    property.Value = text == null ? JValue.CreateNull() : new JValue(text);
+                }
+            }
+
+            return JsonConvert.DeserializeObject<DataTable>(rows.ToString(Formatting.None));
+        }
+        /// <summary>
        /// <para>说明：</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-10-23 </para>