diff --git a/docs/业务分析.xlsx b/docs/业务分析.xlsx
new file mode 100644
index 00000000..a83628e8
Binary files /dev/null and b/docs/业务分析.xlsx differ
diff --git a/labs/CSharpObjectJsonSchema/Controllers/ControllerExtensions.cs b/labs/CSharpObjectJsonSchema/Controllers/ControllerExtensions.cs
index ef6d609c..70da06a0 100644
--- a/labs/CSharpObjectJsonSchema/Controllers/ControllerExtensions.cs
+++ b/labs/CSharpObjectJsonSchema/Controllers/ControllerExtensions.cs
@@ -26,6 +26,17 @@ namespace CSharpObjectJsonSchema.Controllers
             return CreateJson(controller, metadata as DefaultModelMetadata);
         }
 
+        public static object GetJsonSchema(this ControllerBase controller, Type type)
+        {
+            if (controller is null)
+            {
+                throw new ArgumentNullException(nameof(controller));
+            }
+            var metadata = controller.HttpContext.RequestServices.GetRequiredService<IModelMetadataProvider>().GetMetadataForType(type);
+
+            return CreateJson(controller, metadata as DefaultModelMetadata);
+        }
+
         public static object CreateJson(this ControllerBase controller, DefaultModelMetadata metadata)
         {
             if (metadata is null)
@@ -40,7 +51,7 @@ namespace CSharpObjectJsonSchema.Controllers
                 if (metadata.IsComplexType && metadata.IsCollectionType)
                 {
                     json.type = "array";
-                    json.items = new { type = metadata.ModelType.GenericTypeArguments[0].Name };
+                    json.items = controller.GetJsonSchema(metadata.ModelType.GenericTypeArguments[0]);
                 }
                 else if (metadata.IsEnum)
                 {
diff --git a/labs/CSharpObjectJsonSchema/Models/TestModel.cs b/labs/CSharpObjectJsonSchema/Models/TestModel.cs
index 6f191e79..9ab8fe7a 100644
--- a/labs/CSharpObjectJsonSchema/Models/TestModel.cs
+++ b/labs/CSharpObjectJsonSchema/Models/TestModel.cs
@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Rendering;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -52,6 +53,8 @@ namespace CSharpObjectJsonSchema.Models
 
         public List<Guid> Ids { get; set; } = new List<Guid>();
 
+        public List<SelectListItem> SelectList { get; set; } = new List<SelectListItem>();
+
         //public TestModel Model1 { get; set; }
     }