first commit

DOAN.Service/IService/IHelloService.cs

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+using Infrastructure.Model;
+using Microsoft.AspNetCore.Mvc;
+using DOAN.Model.Content;
+using DOAN.Model.System.Dto;
+
+namespace DOAN.Service.IService
+{
+    /// <summary>
+    /// Hello接口
+    /// </summary>
+    public interface IHelloService : IBaseService<ArticleCategory>
+    {
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        string SayHello(string name);
+        ApiResult SayHello2([FromBody] SysUserDto userDto);
+        ApiResult SayHello3();
+        ApiResult SayHelloJson([FromBody] SysUserDto userDto);
+    }
+}