cors

linesider_screen_bankend/linesider_screen_bankend/Controller/OnlyPrintProductLabelController.cs

@@ -94,7 +94,6 @@ namespace linesider_screen_bankend.Controller
                 }
                 else
                 {
-
                     // 返回成功响应
                     await this.HttpContext.SendApiFailAsync(500, "工单不在数据库");
                 }

linesider_screen_bankend/linesider_screen_bankend/Views/MainWindow.xaml.cs

@@ -91,6 +91,11 @@ namespace linesider_screen_bankend.Views
             var server = new WebServer(o => o
                     .WithUrlPrefix(url)
                     .WithMode(HttpListenerMode.EmbedIO))
+                    .WithCors(
+                        origins: "*", // 允许所有来源，或指定特定来源如 "http://example.com,http://localhost:8080"
+                        headers: "*", // 允许所有头
+                        methods: "*" // 允许所有方法
+                    )
                     .WithWebApi("/print_api", m => m
                     .WithController<PrintCommunicationController>(() => new PrintCommunicationController(AddLog))
                     .WithController<OnlyPrintProductLabelController>(() => new OnlyPrintProductLabelController(AddLog)))