正价JsonTypeAttribute特性，标记该特性的数据会已json格式存储在数据库中。

Falcon.SugarApi/DatabaseDefinitions/EntityServices/JsonTypeColumnServices.cs

@@ -0,0 +1,21 @@
+using SqlSugar;
+using System.Reflection;
+
+namespace Falcon.SugarApi.DatabaseDefinitions.EntityServices
+{
+    /// <summary>
+    /// 设置列以Json类型存储。
+    /// </summary>
+    public class JsonTypeColumnServices:IEntityColumnServices
+    {
+        /// <inheritdoc/>
+        public void SetupColumn(PropertyInfo p,EntityColumnInfo c) {
+            if(p.TryGetAttribute<JsonTypeAttribute>(out var a)) {
+                c.IsJson = true;
+                if(a.Length >= 0) {
+                    c.Length = a.Length;
+                }
+            }
+        }
+    }
+}

Falcon.SugarApi/DatabaseDefinitions/EntityServices/SetupLengthColumnServices.cs

@@ -22,7 +22,7 @@ namespace Falcon.SugarApi.DatabaseDefinitions.EntityServices
                 len.Add(la.Length);
             }
             if(len.Any()) {
-                c.Length=len.Reduce(c.Length,(m,i) => Math.Max(m,i));
+                c.Length = len.Reduce(c.Length,(m,i) => Math.Max(m,i));
             }
         }
     }

Falcon.SugarApi/DatabaseDefinitions/JsonTypeAttribute.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace Falcon.SugarApi.DatabaseDefinitions
+{
+    /// <summary>
+    /// 表示该列将以json字符串形式存储
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Property,AllowMultiple = false,Inherited = false)]
+    public class JsonTypeAttribute:Attribute
+    {
+        /// <summary>
+        /// 数据长度。默认4000
+        /// </summary>
+        public int Length { get; set; } = 4000;
+    }
+}

Falcon.SugarApi/DatabaseDefinitions/SugarConnectionConfig.cs

@@ -13,7 +13,7 @@ namespace Falcon.SugarApi.DatabaseDefinitions
     /// <summary>
     /// SqlSugar数据库连接配置
     /// </summary>
-    public class SugarConnectionConfig : ConnectionConfig
+    public class SugarConnectionConfig:ConnectionConfig
     {
         /// <summary>
         /// 是否使用log
@@ -35,6 +35,7 @@ namespace Falcon.SugarApi.DatabaseDefinitions
             ColumnServices.Add(new SetupKeyColumnServices());
             ColumnServices.Add(new SetupLengthColumnServices());
             ColumnServices.Add(new SetupNullableColumnServices());
+            ColumnServices.Add(new JsonTypeColumnServices());
         }
 
         /// <summary>
@@ -42,14 +43,14 @@ namespace Falcon.SugarApi.DatabaseDefinitions
         /// </summary>
         public SugarConnectionConfig() {
             this.ConfigureExternalServices ??= new ConfigureExternalServices { };
-            this.ConfigureExternalServices.EntityNameService = (t, e) => {
+            this.ConfigureExternalServices.EntityNameService = (t,e) => {
-                foreach (var i in TableServices) {
+                foreach(var i in TableServices) {
-                    i.SetupTable(t, e);
+                    i.SetupTable(t,e);
                 }
             };
-            this.ConfigureExternalServices.EntityService = (p, c) => {
+            this.ConfigureExternalServices.EntityService = (p,c) => {
-                foreach (var i in ColumnServices) {
+                foreach(var i in ColumnServices) {
-                    i.SetupColumn(p, c);
+                    i.SetupColumn(p,c);
                 }
             };
         }
@@ -67,7 +68,7 @@ namespace Falcon.SugarApi.DatabaseDefinitions
         /// 通过配置实现Redis缓冲，必须单例实现.
         /// </summary>
         public void AddRedisCache(string connectionString) {
-            if (connectionString.IsNullOrEmpty()) {
+            if(connectionString.IsNullOrEmpty()) {
                 AddRedisCache();
                 return;
             }
@@ -88,9 +89,9 @@ namespace Falcon.SugarApi.DatabaseDefinitions
         /// </summary>
         /// <param name="cache">缓存提供程序</param>
         /// <param name="serialize">序列化实现</param>
-        public void AddDistributedCache(IDistributedCache cache, IJsonSerialize serialize) {
+        public void AddDistributedCache(IDistributedCache cache,IJsonSerialize serialize) {
             this.ConfigureExternalServices ??= new ConfigureExternalServices { };
-            this.ConfigureExternalServices.DataInfoCacheService = new DistributedCache(cache, serialize);
+            this.ConfigureExternalServices.DataInfoCacheService = new DistributedCache(cache,serialize);
         }
     }
 }