diff --git a/NewLife.Remoting/ApiClient.cs b/NewLife.Remoting/ApiClient.cs
index 9e9d24f..7503357 100644
--- a/NewLife.Remoting/ApiClient.cs
+++ b/NewLife.Remoting/ApiClient.cs
@@ -5,6 +5,7 @@
 using NewLife.Model;
 using NewLife.Net;
 using NewLife.Remoting.Http;
+using NewLife.Serialization;
 using NewLife.Threading;
 #if !NET40
 using TaskEx = System.Threading.Tasks.Task;
@@ -46,6 +47,9 @@ public class ApiClient : ApiHost, IApiClient
     /// <summary>收到请求或响应时</summary>
     public event EventHandler<ApiReceivedEventArgs>? Received;
 
+    /// <summary>服务提供者。创建控制器实例时使用，可实现依赖注入。务必在注册控制器之前设置该属性</summary>
+    public IServiceProvider? ServiceProvider { get; set; }
+
     /// <summary>调用统计</summary>
     public ICounter? StatInvoke { get; set; }
     #endregion
@@ -89,7 +93,8 @@ public virtual Boolean Open()
             var ss = Servers;
             if (ss == null || ss.Length == 0) throw new ArgumentNullException(nameof(Servers), "未指定服务端地址");
 
-            Encoder ??= new JsonEncoder();
+            var json = ServiceProvider?.GetService<IJsonHost>() ?? JsonHelper.Default;
+            Encoder ??= new JsonEncoder { JsonHost = json };
 
             // 集群
             Cluster = InitCluster();
diff --git a/NewLife.Remoting/ApiHttpServer.cs b/NewLife.Remoting/ApiHttpServer.cs
index a2914c2..1a2673c 100644
--- a/NewLife.Remoting/ApiHttpServer.cs
+++ b/NewLife.Remoting/ApiHttpServer.cs
@@ -1,6 +1,7 @@
 using NewLife.Http;
+using NewLife.Model;
 using NewLife.Net;
-using NewLife.Remoting.Http;
+using NewLife.Serialization;
 using HttpCodec = NewLife.Remoting.Http.HttpCodec;
 
 namespace NewLife.Remoting;
@@ -29,13 +30,15 @@ public override Boolean Init(Object config, IApiHost host)
         if (config is NetUri uri) Port = uri.Port;
 
         //RawUrl = uri + "";
+        var json = ServiceProvider?.GetService<IJsonHost>() ?? JsonHelper.Default;
 
         // Http封包协议
         //Add<HttpCodec>();
-        Add(new HttpCodec { AllowParseHeader = true });
+        Add(new HttpCodec { AllowParseHeader = true, JsonHost = json });
 
         //host.Handler = new ApiHttpHandler { Host = host };
-        host.Encoder = new HttpEncoder();
+
+        host.Encoder = new HttpEncoder { JsonHost = json };
 
         return true;
     }
diff --git a/NewLife.Remoting/ApiNetServer.cs b/NewLife.Remoting/ApiNetServer.cs
index 6d66deb..2386b29 100644
--- a/NewLife.Remoting/ApiNetServer.cs
+++ b/NewLife.Remoting/ApiNetServer.cs
@@ -1,8 +1,9 @@
-using NewLife.Http;
-using NewLife.Log;
+using NewLife.Log;
 using NewLife.Messaging;
+using NewLife.Model;
 using NewLife.Net;
 using NewLife.Remoting.Http;
+using NewLife.Serialization;
 using HttpCodec = NewLife.Remoting.Http.HttpCodec;
 
 namespace NewLife.Remoting;
@@ -38,9 +39,10 @@ public virtual Boolean Init(Object config, IApiHost host)
         //    Add<WebSocketServerCodec>();
         //else
         //    Add(new HttpCodec { AllowParseHeader = true });
-      
+        var json = ServiceProvider?.GetService<IJsonHost>() ?? JsonHelper.Default;
+
         Add<WebSocketServerCodec>();
-        Add(new HttpCodec { AllowParseHeader = true });
+        Add(new HttpCodec { AllowParseHeader = true, JsonHost = json });
 
         // 新生命标准网络封包协议
         Add(Host.GetMessageCodec());
diff --git a/NewLife.Remoting/ApiServer.cs b/NewLife.Remoting/ApiServer.cs
index 91488e8..0d1644f 100644
--- a/NewLife.Remoting/ApiServer.cs
+++ b/NewLife.Remoting/ApiServer.cs
@@ -5,6 +5,7 @@
 using NewLife.Messaging;
 using NewLife.Model;
 using NewLife.Net;
+using NewLife.Serialization;
 using NewLife.Threading;
 
 namespace NewLife.Remoting;
@@ -47,7 +48,7 @@ public class ApiServer : ApiHost, IServer
     public event EventHandler<ApiReceivedEventArgs>? Received;
 
     /// <summary>服务提供者。创建控制器实例时使用，可实现依赖注入。务必在注册控制器之前设置该属性</summary>
-    public IServiceProvider? ServiceProvider { get; set; } //= ObjectContainer.Provider;
+    public IServiceProvider? ServiceProvider { get; set; }
 
     /// <summary>处理统计</summary>
     public ICounter? StatProcess { get; set; }
@@ -167,7 +168,8 @@ public virtual void Start()
     {
         if (Active) return;
 
-        Encoder ??= new JsonEncoder();
+        var json = ServiceProvider?.GetService<IJsonHost>() ?? JsonHelper.Default;
+        Encoder ??= new JsonEncoder { JsonHost = json };
         Handler ??= new ApiHandler { Host = this };
 
         Encoder.Log = EncoderLog;
diff --git a/NewLife.Remoting/Http/HttpCodec.cs b/NewLife.Remoting/Http/HttpCodec.cs
index 399a165..b853d19 100644
--- a/NewLife.Remoting/Http/HttpCodec.cs
+++ b/NewLife.Remoting/Http/HttpCodec.cs
@@ -1,10 +1,8 @@
-using System;
-using System.Collections.Generic;
-using NewLife.Data;
+using NewLife.Data;
 using NewLife.Http;
-using NewLife.Messaging;
 using NewLife.Model;
 using NewLife.Net;
+using NewLife.Serialization;
 
 namespace NewLife.Remoting.Http;
 
@@ -17,6 +15,9 @@ public class HttpCodec : Handler
     /// 分析头部对性能有一定损耗
     /// </remarks>
     public Boolean AllowParseHeader { get; set; }
+
+    /// <summary>Json主机。提供序列化能力</summary>
+    public IJsonHost JsonHost { get; set; } = JsonHelper.Default;
     #endregion
 
     /// <summary>写入数据</summary>
@@ -58,7 +59,7 @@ public class HttpCodec : Handler
             // 第一个请求必须是GET/POST，才执行后续操作
             if (!isGet && !isPost) return base.Read(context, message);
 
-            ext["Encoder"] = new HttpEncoder();
+            ext["Encoder"] = new HttpEncoder { JsonHost = JsonHost };
         }
 
         // 检查是否有未完成消息
diff --git a/NewLife.Remoting/Http/HttpEncoder.cs b/NewLife.Remoting/Http/HttpEncoder.cs
index c08784d..2e879c7 100644
--- a/NewLife.Remoting/Http/HttpEncoder.cs
+++ b/NewLife.Remoting/Http/HttpEncoder.cs
@@ -13,6 +13,9 @@ namespace NewLife.Http;
 public class HttpEncoder : EncoderBase, IEncoder
 {
     #region 属性
+    /// <summary>Json主机。提供序列化能力</summary>
+    public IJsonHost JsonHost { get; set; } = JsonHelper.Default;
+
     /// <summary>是否使用Http状态。默认false，使用json包装响应码</summary>
     public Boolean UseHttpStatus { get; set; }
     #endregion
@@ -34,11 +37,9 @@ public class HttpEncoder : EncoderBase, IEncoder
 
         if (value == null) return null;
 
-        String json;
-        if (UseHttpStatus)
-            json = value.ToJson(false, false, false);
-        else
-            json = new { action, code, data = value }.ToJson(false, true, false);
+        var json = UseHttpStatus ?
+            JsonHost.Write(value, false, false, false) :
+            JsonHost.Write(new { action, code, data = value }, false, true, false);
         WriteLog("{0}=>{1}", action, json);
 
         return json.GetBytes();
@@ -124,7 +125,7 @@ public class HttpEncoder : EncoderBase, IEncoder
     /// <param name="obj"></param>
     /// <param name="targetType"></param>
     /// <returns></returns>
-    public virtual Object? Convert(Object obj, Type targetType) => JsonHelper.Default.Convert(obj, targetType);
+    public virtual Object? Convert(Object obj, Type targetType) => JsonHost.Convert(obj, targetType);
 
     #region 编码/解码
     /// <summary>创建请求</summary>
diff --git a/NewLife.Remoting/JsonEncoder.cs b/NewLife.Remoting/JsonEncoder.cs
index 318e8fa..8c6651e 100644
--- a/NewLife.Remoting/JsonEncoder.cs
+++ b/NewLife.Remoting/JsonEncoder.cs
@@ -1,5 +1,6 @@
 using NewLife.Data;
 using NewLife.Messaging;
+using NewLife.Model;
 using NewLife.Reflection;
 using NewLife.Serialization;
 
@@ -8,6 +9,9 @@ namespace NewLife.Remoting;
 /// <summary>Json编码器</summary>
 public class JsonEncoder : EncoderBase, IEncoder
 {
+    /// <summary>Json主机。提供序列化能力</summary>
+    public IJsonHost JsonHost { get; set; } = JsonHelper.Default;
+
     /// <summary>编码。请求/响应</summary>
     /// <param name="action"></param>
     /// <param name="code"></param>
@@ -86,7 +90,7 @@ public virtual Packet Encode(String action, Int32? code, Packet? value)
     /// <param name="obj"></param>
     /// <param name="targetType"></param>
     /// <returns></returns>
-    public Object? Convert(Object obj, Type targetType) => JsonHelper.Default.Convert(obj, targetType);
+    public Object? Convert(Object obj, Type targetType) => JsonHost.Convert(obj, targetType);
 
     /// <summary>创建请求</summary>
     /// <param name="action"></param>
@@ -154,7 +158,7 @@ public IMessage CreateResponse(IMessage msg, String action, Int32 code, Object?
                 if (value is Exception ex)
                     value = str = ex.GetTrue().Message;
                 else
-                    str = value.ToJson(false, false, false);
+                    str = JsonHost.Write(value, false, false, false);
 
                 pk = str.GetBytes();
             }
diff --git a/Samples/IoTZero/Common/ApiFilterAttribute.cs b/Samples/IoTZero/Common/ApiFilterAttribute.cs
index 44e4af4..616e24d 100644
--- a/Samples/IoTZero/Common/ApiFilterAttribute.cs
+++ b/Samples/IoTZero/Common/ApiFilterAttribute.cs
@@ -37,30 +37,31 @@ public override void OnActionExecuted(ActionExecutedContext context)
         if (context.Result != null)
             if (context.Result is ObjectResult obj)
             {
+                var host = context.HttpContext.RequestServices?.GetService<IJsonHost>() ?? JsonHelper.Default;
                 //context.Result = new JsonResult(new { code = obj.StatusCode ?? 0, data = obj.Value });
                 var rs = new { code = obj.StatusCode ?? 0, data = obj.Value, traceId };
                 context.Result = new ContentResult
                 {
-                    Content = rs.ToJson(false, true, true),
+                    Content = host.Write(rs, false, true, true),
                     ContentType = "application/json",
                     StatusCode = 200
                 };
             }
             else if (context.Result is EmptyResult)
                 context.Result = new JsonResult(new { code = 0, data = new { }, traceId });
-        else if (context.Exception != null && !context.ExceptionHandled)
-        {
-            var ex = context.Exception.GetTrue();
-            if (ex is NewLife.Remoting.ApiException aex)
-                context.Result = new JsonResult(new { code = aex.Code, data = aex.Message, traceId });
-            else
-                context.Result = new JsonResult(new { code = 500, data = ex.Message, traceId });
+            else if (context.Exception != null && !context.ExceptionHandled)
+            {
+                var ex = context.Exception.GetTrue();
+                if (ex is NewLife.Remoting.ApiException aex)
+                    context.Result = new JsonResult(new { code = aex.Code, data = aex.Message, traceId });
+                else
+                    context.Result = new JsonResult(new { code = 500, data = ex.Message, traceId });
 
-            context.ExceptionHandled = true;
+                context.ExceptionHandled = true;
 
-            // 输出异常日志
-            if (XTrace.Debug) XTrace.WriteException(ex);
-        }
+                // 输出异常日志
+                if (XTrace.Debug) XTrace.WriteException(ex);
+            }
 
         base.OnActionExecuted(context);
     }