使用NerCore開發框架過程當中須要對404,500等狀態碼進行友好提示頁面處理,參照asp.net mvc並無發現提供Application_Error和Application_BeginRequest方法,是用攔截器路由不匹配的狀況下也不會進行攔截,但NetCore中在Microsoft.AspNetCore.Builder.UseExtensions中提供了Use擴展方法對HttpContext進行了攔截處理,這樣咱們就能夠獲取到Request和Response針對跳轉進行處理,咱們在Startup的Configure方法中加入以下代碼,在404的狀況同時能夠處理訪問項目時的默認路由跳轉,例如訪問http://localhost:4099/fastcloud時不加入具體主頁面路由,則context.Request.Path爲空,能夠跳轉咱們默認制定的主頁mvc
//自定義404和500處理 app.Use(async (context, next) => { await next(); if (context.Response.StatusCode == 404) { string FilePath = context.Request.Path; if (string.IsNullOrEmpty(FilePath) || FilePath == "/") { context.Request.Path = "/" + AppConfigUtil.Configuration["Frame:DefaultHomeUrl"]; } else { context.Request.Path = "/frame/home/error/404"; } await next(); } if (context.Response.StatusCode == 500) { context.Request.Path = "/frame/home/error/500"; } });
須要注意的是,若是在項目中加入的全局異常攔截器,則須要判斷若是是頁面請求,纔會跳轉至自定義500頁面,Ajax請求返回錯誤的Json串,具體代碼和效果以下app
public class GlobalExceptionFilter : IExceptionFilter { public void OnException(ExceptionContext context) { string FloderPath = CloudUtil.GetContentPath() + "/Logs"; DirectoryInfo SystemLogDir = new DirectoryInfo(FloderPath); if (!SystemLogDir.Exists) { SystemLogDir.Create(); } StringBuilder builder = new StringBuilder(); builder.AppendFormat("異常請求url:{0}", context.HttpContext.Request.Path + Environment.NewLine); builder.AppendFormat("異常信息:{0}", context.Exception.Message + Environment.NewLine); builder.AppendFormat("堆棧信息:{0}", context.Exception.StackTrace + Environment.NewLine); LogUtil.WriteLog(CloudUtil.GetContentPath() + "/Logs/Exception", "log_", builder.ToString()); bool IsAjaxCall = context.HttpContext.Request.Headers["x-requested-with"] == "XMLHttpRequest"; if (IsAjaxCall) { context.Result = Result.Error("系統發生錯誤,請聯繫管理員!"); context.ExceptionHandled = true; } else { context.Result = new RedirectResult(CloudUtil.GetRootPath() + "frame/home/error/500"); context.ExceptionHandled = true; } }