增强应用程序异常处理机制，新增未处理异常日志记录功能，确保在启动和运行期间捕获并记录异常信息。同时，重构配置文件加载逻辑，支持用户目录覆盖默认配置，优化 SQLite 数据库连接字符串处理，确保在不同环境下的兼容性和稳定性。

yy-admin-master/YY.Admin/App.xaml.cs

@@ -4,7 +4,9 @@ using Mapster;
 using Microsoft.Extensions.Configuration;
 using NewLife;
 using System.IO;
+using System.Text;
 using System.Windows;
+using System.Windows.Threading;
 using YY.Admin.Core;
 using YY.Admin.EventBus;
 using YY.Admin.Filter;
@@ -14,6 +16,7 @@ using YY.Admin.Services.Service.Print;
 using YY.Admin.Setup;
 using YY.Admin.ViewModels;
 using YY.Admin.Views;
+using YY.Admin.Core.Util;
 namespace YY.Admin
 {
     /// <summary>
@@ -24,32 +27,116 @@ namespace YY.Admin
         private IConfiguration? _configuration;
         private ILoggerService? _logger;
         private readonly SyncModule _syncModule = new();
+
+        public App()
+        {
+            DispatcherUnhandledException += OnDispatcherUnhandledException;
+            AppDomain.CurrentDomain.UnhandledException += OnUnhandledDomainException;
+        }
+
+        private static void TryWriteCrashLog(string headline, Exception ex)
+        {
+            try
+            {
+                var dir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "YY.Admin", "logs");
+                Directory.CreateDirectory(dir);
+                var file = Path.Combine(dir, $"crash-{DateTime.Now:yyyyMMdd-HHmmss}.txt");
+                var sb = new StringBuilder();
+                sb.AppendLine(headline);
+                sb.AppendLine(ex.ToString());
+                File.WriteAllText(file, sb.ToString(), Encoding.UTF8);
+                MessageBox.Show($"程序异常已写入日志：\n{file}\n\n{ex.Message}", "智能制造MES工控", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+            catch
+            {
+                MessageBox.Show($"{headline}\n{ex}", "智能制造MES工控", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+        }
+
+        private void OnDispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
+        {
+            TryWriteCrashLog("UI 线程未处理异常", e.Exception);
+            e.Handled = true;
+            Shutdown(1);
+        }
+
+        private void OnUnhandledDomainException(object? sender, UnhandledExceptionEventArgs e)
+        {
+            if (e.ExceptionObject is Exception ex)
+            {
+                TryWriteCrashLog("域未处理异常", ex);
+            }
+
+            if (e.IsTerminating)
+            {
+                Environment.Exit(1);
+            }
+        }
+
         protected override Window CreateShell()
         {
             return Container.Resolve<LoginWindow>();
         }
         protected override void OnStartup(StartupEventArgs e)
         {
-            var baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
-            // 构建配置
-            _configuration = new ConfigurationBuilder()
-                .SetBasePath(baseDirectory)
-                .AddJsonFile("Configuration/appsettings.json", optional: false, reloadOnChange: true)
-                .Build();
-            // 全局配置
-            TypeAdapterConfig.GlobalSettings.Default
-                .IgnoreNullValues(true)
-                .NameMatchingStrategy(NameMatchingStrategy.IgnoreCase);
+            try
+            {
+                var baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
+                var cfgPath = Path.Combine(baseDirectory, "Configuration", "appsettings.json");
+                if (!File.Exists(cfgPath))
+                {
+                    var msg = $"未找到配置文件（请确认与 YY.Admin.exe 同目录存在 Configuration\\appsettings.json）：\n{cfgPath}";
+                    TryWriteStartupFailure(msg);
+                    Shutdown(1);
+                    return;
+                }
 
-            // FluentValidation 全局规则级别配置
-            ValidatorOptions.Global.DefaultRuleLevelCascadeMode = CascadeMode.Stop;
+                var userCfgPath = Path.Combine(
+                    AppWritablePaths.EnsureDirectoryExists(AppWritablePaths.ConfigurationDirectory),
+                    "appsettings.json");
 
-            // Mapster 全局配置
-            #if DEBUG
-            //TypeAdapterConfig.GlobalSettings.RequireExplicitMapping = true;
-            #endif
+                // 构建配置：安装目录默认 + 用户目录覆盖（JeecgIntegration 等可由服务器设置写入）
+                _configuration = new ConfigurationBuilder()
+                    .SetBasePath(baseDirectory)
+                    .AddJsonFile(Path.Combine("Configuration", "appsettings.json"), optional: false, reloadOnChange: true)
+                    .AddJsonFile(userCfgPath, optional: true, reloadOnChange: true)
+                    .Build();
+                // 全局配置
+                TypeAdapterConfig.GlobalSettings.Default
+                    .IgnoreNullValues(true)
+                    .NameMatchingStrategy(NameMatchingStrategy.IgnoreCase);
 
-            base.OnStartup(e);
+                // FluentValidation 全局规则级别配置
+                ValidatorOptions.Global.DefaultRuleLevelCascadeMode = CascadeMode.Stop;
+
+                // Mapster 全局配置
+                #if DEBUG
+                //TypeAdapterConfig.GlobalSettings.RequireExplicitMapping = true;
+                #endif
+
+                base.OnStartup(e);
+            }
+            catch (Exception ex)
+            {
+                TryWriteCrashLog("启动阶段异常（配置/框架初始化失败）", ex);
+                Shutdown(1);
+            }
+        }
+
+        private static void TryWriteStartupFailure(string message)
+        {
+            try
+            {
+                var dir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "YY.Admin", "logs");
+                Directory.CreateDirectory(dir);
+                var file = Path.Combine(dir, $"startup-{DateTime.Now:yyyyMMdd-HHmmss}.txt");
+                File.WriteAllText(file, message, Encoding.UTF8);
+                MessageBox.Show($"{message}\n\n已记录：{file}", "智能制造MES工控", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+            catch
+            {
+                MessageBox.Show(message, "智能制造MES工控", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
         }
         //注册
         protected override void RegisterTypes(IContainerRegistry containerRegistry)