feat: JsonNode support (#528)

src/EasilyNET.MongoSerializer.AspNetCore/JsonNodeSerializer.cs

@@ -0,0 +1,37 @@
+using MongoDB.Bson.Serialization.Serializers;
+using MongoDB.Bson.Serialization;
+using System.Text.Json.Nodes;
+
+namespace EasilyNET.MongoSerializer.AspNetCore;
+
+/// <summary>
+/// JsonNode Support
+/// </summary>
+public class JsonNodeSerializer : SerializerBase<JsonNode>
+{
+    const string EmptyObject = "{}";
+
+    /// <summary>
+    /// if null write {}
+    /// </summary>
+    /// <param name="context"></param>
+    /// <param name="args"></param>
+    /// <param name="value"></param>
+    public override void Serialize(BsonSerializationContext context, BsonSerializationArgs args, JsonNode value)
+    {
+        var json = value?.ToString() ?? EmptyObject;
+        context?.Writer?.WriteString(json);
+    }
+
+    /// <summary>
+    /// if null return {}
+    /// </summary>
+    /// <param name="context"></param>
+    /// <param name="args"></param>
+    /// <returns></returns>
+    public override JsonNode Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
+    {
+        string json = context?.Reader?.ReadString() ?? EmptyObject;
+        return JsonNode.Parse(json)!;
+    }
+}

src/EasilyNET.MongoSerializer.AspNetCore/README.md

@@ -10,12 +10,16 @@ EasilyNET.Mongo.AspNetCore 扩展,用于支持一些非默认类型的序列化
     2. 转换成 Ticks 的方式存储
     3. 若想转化成其他类型也可自行实现,如:转化成 ulong 类型
 - 添加动态类型支持[object 和 dynamic], 2.20 版后官方又加上了.
-- 添加.Net6 Date/Time Only 类型支持(TimeOnly 理论上应该是兼容原 TimeSpan 数据类型).
+        JsonArray.
+- 添加JsonNode类型支持.
 
 ---
 
 - 配合 EasilyNET.Mongo.AspNetCore 或单独使用
 
+- JsonNode类型因为反序列化时不支持Unicode字符，如果需要序列化插入至其他地方（例如Redis），在序列化时需要将JsonSerializerOptions的Encoder属性设置为System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping.
+
+
 ```csharp
 builder.Services.AddMongoContext<DbContext>(builder.Configuration)
 // 添加自定义序列化
@@ -24,4 +28,7 @@ builder.Services.RegisterSerializer(new TimeOnlySerializerAsString());
 // 或者将他们存储为long类型的Ticks,也可以自己组合使用.
 builder.Services.RegisterSerializer(new DateOnlySerializerAsTicks());
 builder.Services.RegisterSerializer(new TimeOnlySerializerAsTicks());
+
+// 添加JsonNode支持
+builder.Services.RegisterSerializer(new JsonNodeSerializer());
 ```