添加项目文件。

HT.Cloud.Code/Filter/GlobalExceptionFilter.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+using System.Threading.Tasks;
+
+namespace HT.Cloud.Code
+{
+	/// <summary>
+	/// 全局异常过滤器,MVC使用
+	/// </summary>
+	public class GlobalExceptionFilter : IExceptionFilter, IAsyncExceptionFilter
+	{
+		public void OnException(ExceptionContext context)
+		{
+			LogHelper.WriteWithTime(context);
+			if (context.HttpContext.Request.IsAjaxRequest())
+			{
+				AlwaysResult obj = new AlwaysResult();
+				obj.state = ResultType.error.ToString();
+				obj.message = context.Exception.GetOriginalException().Message;
+				if (string.IsNullOrEmpty(obj.message))
+				{
+					obj.message = "抱歉，系统错误，请联系管理员！";
+				}
+				context.Result = new JsonResult(obj);
+				context.ExceptionHandled = true;
+			}
+			else
+			{
+				//context.HttpContext.Response.WriteAsync("<script>top.location.href ='" + context.HttpContext.Request.PathBase + "/Home/Error?msg=500" + "';if(document.all) window.event.returnValue = false;</script>");
+				context.Result = new RedirectResult(context.HttpContext.Request.PathBase + "/Home/Error?msg=500");
+				context.ExceptionHandled = true;
+			}
+		}
+
+		public Task OnExceptionAsync(ExceptionContext context)
+		{
+			OnException(context);
+			return Task.CompletedTask;
+		}
+	}
+}

HT.Cloud.Code/Filter/GlobalExceptionMiddleware.cs

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+using Microsoft.AspNetCore.Http;
+using Newtonsoft.Json;
+using System;
+using System.Net;
+using System.Threading.Tasks;
+
+namespace HT.Cloud.Code
+{
+	/// <summary>
+	/// 全局异常中间件，api使用
+	/// </summary>
+	public class GlobalExceptionMiddleware
+	{
+		private readonly RequestDelegate next;
+
+		public GlobalExceptionMiddleware(RequestDelegate next)
+		{
+			this.next = next;
+		}
+
+		public async Task Invoke(HttpContext context /* other dependencies */)
+		{
+			try
+			{
+				await next(context);
+			}
+			catch (Exception ex)
+			{
+				await HandleExceptionAsync(context, ex);
+			}
+		}
+
+		private static Task HandleExceptionAsync(HttpContext context, Exception exception)
+		{
+			var code = HttpStatusCode.OK;
+			LogHelper.WriteWithTime(exception);
+			var result = JsonConvert.SerializeObject(new AlwaysResult
+			{
+				state = ResultType.error.ToString(),
+				message = exception.Message
+			});
+			context.Response.ContentType = "application/json";
+			context.Response.StatusCode = (int)code;
+			return context.Response.WriteAsync(result);
+		}
+	}
+}

HT.Cloud.Code/Filter/ModelActionFilter.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+
+namespace HT.Cloud.Code
+{
+	/// <summary>
+	/// 模型验证过滤器
+	/// </summary>
+	public class ModelActionFilter : ActionFilterAttribute, IActionFilter
+	{
+		public override void OnActionExecuting(ActionExecutingContext context)
+		{
+			string message = "";
+			if (!context.ModelState.IsValid)
+			{
+				foreach (var item in context.ModelState.Values)
+				{
+					foreach (var error in item.Errors)
+					{
+						message = message += error.ErrorMessage + "|";
+					}
+				}
+				if (message.Length > 0)
+				{
+					message = message.Substring(0, message.Length - 1);
+				}
+				context.Result = new JsonResult(new AlwaysResult { state = ResultType.error.ToString(), message = message });
+			}
+		}
+	}
+}