增加Mediat Pip特性，并用实例来做一个demo

Modules/Store.Users/Controllers/UserController.cs

@@ -1,29 +1,45 @@
-using Asp.Versioning;
+using Asp.Versioning;
+using MAX.Framework.Security;
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using Store.Users.Commands;
 using Store.Users.Contracts;
 using Store.Users.Contracts.Dtos;
-using Store.Users.Services;
-using System;
-using System.Collections.Generic;
-using System.Text;
+using Store.Users.Dtos;
 
-namespace Store.Users.Controllers
+namespace Store.Users.Controllers;
+
+[ApiController]
+[ApiVersionNeutral]
+[Route("user/[action]")]
+public class UserController : ControllerBase
 {
-	[ApiController]
-	[ApiVersionNeutral]
-	[Route("user/[action]")]
-	public class UserController : ControllerBase
-	{
-		private readonly IUserQueryService _userQuery;
+    private readonly IUserQueryService _userQuery;
+    private readonly IMediator _mediator;
+    private readonly ICurrentUser _currentUser;
 
-		public UserController(IUserQueryService userQuery)
-		{
-			_userQuery = userQuery;
-		}
-		[HttpGet]
-		public async Task<UserInfo> GetUser(string userName)
-		{
-			return await _userQuery.GetUser(userName);
-		}
-	}
+    public UserController(IUserQueryService userQuery, IMediator mediator, ICurrentUser currentUser)
+    {
+        _userQuery = userQuery;
+        _mediator = mediator;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    public async Task<UserInfo> GetUser(string userName)
+    {
+        return await _userQuery.GetUser(userName);
+    }
+
+    /// <summary>使用当前登录用户的积分为商铺续费。</summary>
+    [HttpPost]
+    public Task<ShopRenewResponse> ShopRenew([FromBody] ShopRenewRequest request, CancellationToken cancellationToken)
+    {
+        if (!_currentUser.IsAuthenticated || string.IsNullOrWhiteSpace(_currentUser.UserName))
+            throw new UnauthorizedAccessException();
+
+        return _mediator.Send(new ShopRenewCommand(
+            _currentUser.UserName, request.ShopId, request.RenewDuration, request.Remark), cancellationToken);
+    }
 }