diff --git a/Infrastructure/Extensions/ObjectExtension.cs b/Infrastructure/Extensions/ObjectExtension.cs
index 6f55cfec..3b9009b0 100644
--- a/Infrastructure/Extensions/ObjectExtension.cs
+++ b/Infrastructure/Extensions/ObjectExtension.cs
@@ -546,30 +546,7 @@ namespace Infrastructure.Extensions
             }
             return info;
         }
-
-        public static byte[] ToBytes(this object obj)
-        {
-            if (obj == null)
-                return null;
-            var bf = new BinaryFormatter();
-            using (var ms = new MemoryStream())
-            {
-                bf.Serialize(ms, obj);
-                return ms.ToArray();
-            }
-        }
-
-        public static object ToObject(this byte[] source)
-        {
-            using (var memStream = new MemoryStream())
-            {
-                var bf = new BinaryFormatter();
-                memStream.Write(source, 0, source.Length);
-                memStream.Seek(0, SeekOrigin.Begin);
-                var obj = bf.Deserialize(memStream);
-                return obj;
-            }
-        }
+        
 
         /// <summary>
         /// 将object转换为char类型信息。
diff --git a/Infrastructure/Infrastructure.csproj b/Infrastructure/Infrastructure.csproj
index 0788b5b7..f36457b8 100644
--- a/Infrastructure/Infrastructure.csproj
+++ b/Infrastructure/Infrastructure.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
diff --git a/OpenAuth.App/OpenAuth.App.csproj b/OpenAuth.App/OpenAuth.App.csproj
index facf853e..51129b48 100644
--- a/OpenAuth.App/OpenAuth.App.csproj
+++ b/OpenAuth.App/OpenAuth.App.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
diff --git a/OpenAuth.Identity/OpenAuth.IdentityServer.csproj b/OpenAuth.Identity/OpenAuth.IdentityServer.csproj
index ab5fdc93..0505b0f3 100644
--- a/OpenAuth.Identity/OpenAuth.IdentityServer.csproj
+++ b/OpenAuth.Identity/OpenAuth.IdentityServer.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
diff --git a/OpenAuth.Mvc/OpenAuth.Mvc.csproj b/OpenAuth.Mvc/OpenAuth.Mvc.csproj
index 820ef3af..d42dd0e6 100644
--- a/OpenAuth.Mvc/OpenAuth.Mvc.csproj
+++ b/OpenAuth.Mvc/OpenAuth.Mvc.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UseRazorBuildServer>false</UseRazorBuildServer>
   </PropertyGroup>
 
diff --git a/OpenAuth.Repository/OpenAuth.Repository.csproj b/OpenAuth.Repository/OpenAuth.Repository.csproj
index 46070529..30091f2c 100644
--- a/OpenAuth.Repository/OpenAuth.Repository.csproj
+++ b/OpenAuth.Repository/OpenAuth.Repository.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
diff --git a/OpenAuth.WebApi/Dockerfile b/OpenAuth.WebApi/Dockerfile
index 84993e2a..d7caf014 100644
--- a/OpenAuth.WebApi/Dockerfile
+++ b/OpenAuth.WebApi/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS base
 WORKDIR /app
 # WebApi
 EXPOSE 52789
@@ -7,7 +7,7 @@ EXPOSE 1802
 # Identity
 EXPOSE 12796
 
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 # 将当前目录下的所有文件和文件夹复制到容器的当前工作目录中
 COPY *.sln ./
diff --git a/OpenAuth.WebApi/OpenAuth.WebApi.csproj b/OpenAuth.WebApi/OpenAuth.WebApi.csproj
index 4e00f6e5..438f5b7a 100644
--- a/OpenAuth.WebApi/OpenAuth.WebApi.csproj
+++ b/OpenAuth.WebApi/OpenAuth.WebApi.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">