文件上传功能添加，注意使用Path.Combine处理通用路径问题（windows||docker)

CloudBuilder/CloudBuilder.Master.Service/FileTypePolicyService.cs

@@ -0,0 +1,48 @@
+using CloudBuilder.Core.DatabaseAccessor.Entity;
+using CloudBuilder.Core.Service;
+using CloudBuilder.Security.Policy;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CloudBuilder.Master.Service
+{
+    public class FileTypePolicyService : IFileTypePolicyService
+    {
+        private readonly IApplicationService service;
+
+        public FileTypePolicyService(IApplicationService service)
+        {
+            this.service = service;
+        }
+
+        [AllowAnonymous]
+        [HttpPost]
+        public SelectOption[] FindSelectOption(bool blank)
+        {
+            FileTypePolicy policy = FileTypePolicy.GetInstance(service);
+            string[] values = policy.GetValues();
+            List<SelectOption> l = new List<SelectOption>();
+
+            SelectOption selectOption;
+            if (blank)
+            {
+                selectOption = new SelectOption();
+                l.Add(selectOption);
+            }
+
+            foreach (string value in values)
+            {
+                selectOption = new SelectOption();
+                selectOption.BindValue = value;
+                selectOption.DisplayName = policy.ComposeMessage(value, service.Locale);
+                l.Add(selectOption);
+            }
+            return l.ToArray();
+        }
+    }
+}