diff --git a/Admin.NET/Plugins/Admin.NET.Plugin.ApprovalFlow/Middleware/ApprovalFlowMiddleware.cs b/Admin.NET/Plugins/Admin.NET.Plugin.ApprovalFlow/Middleware/ApprovalFlowMiddleware.cs
index bc833f71..9c167bea 100644
--- a/Admin.NET/Plugins/Admin.NET.Plugin.ApprovalFlow/Middleware/ApprovalFlowMiddleware.cs
+++ b/Admin.NET/Plugins/Admin.NET.Plugin.ApprovalFlow/Middleware/ApprovalFlowMiddleware.cs
@@ -34,16 +34,17 @@ public class ApprovalFlowMiddleware
     private readonly RequestDelegate _next;
     private readonly SysApprovalService _sysApprovalService;
 
-    public ApprovalFlowMiddleware(RequestDelegate next, SysApprovalService sysApprovalService)
+    public ApprovalFlowMiddleware(RequestDelegate next)
     {
         _next = next;
-        _sysApprovalService = sysApprovalService;
+        _sysApprovalService = App.GetRequiredService<SysApprovalService>();
     }
 
-    public async Task Invoke(HttpContext context)
+    public async Task InvokeAsync(HttpContext context)
     {
         await _sysApprovalService.MatchApproval(context);
 
-        await _next.Invoke(context);
+        // 调用下一个中间件
+        await _next(context);
     }
 }
\ No newline at end of file