增加一个错误提示中间件

Build_God_Api/Build_God_Api/Program.cs

@@ -190,6 +190,22 @@ namespace Build_God_Api
 
             var app = builder.Build();
 
+            // 全局异常处理 - 只返回错误消息，不返回堆栈
+            app.UseExceptionHandler(errorApp =>
+            {
+                errorApp.Run(async context =>
+                {
+                    context.Response.StatusCode = 500;
+                    context.Response.ContentType = "application/json";
+
+                    var exceptionHandlerPathFeature = context.Features.Get<Microsoft.AspNetCore.Diagnostics.IExceptionHandlerPathFeature>();
+                    var exception = exceptionHandlerPathFeature?.Error;
+
+                    var result = System.Text.Json.JsonSerializer.Serialize(new { message = exception?.Message ?? "服务器内部错误" });
+                    await context.Response.WriteAsync(result);
+                });
+            });
+
             // Configure the HTTP request pipeline.
             if (app.Environment.IsDevelopment())
             {