背景
ELMAH就是一个日志的拦截和处理组件,说到.net的日志组件,大家的第一反应该是Log4Net、NLog等这些东西,关于Log4Net和NLog,可以说是.net日志组件里面使用最为广泛的组件了,它们功能强大、使用方便。
优点
相比它们:
1、ELMAH的使用更加简单,它甚至不用写一句代码;
2、ELMAH是一种“可拔插式”的组件,即在一个运行的项目里面我们可以随意轻松加入日志功能,或者移除日志功能;
3、ELMAH组件自带界面,不用写任何代码,即可查看异常日志的界面;
4、组件提供了一个用于集中记录和通知错误日志的机制,通过邮件的机制通知错误信息给相关人员。
代码实现
1、nuget安装 using Elmah;
2、Application_Error 异常404处理
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protected void Application_Error( object sender, EventArgs e) { if (BQoolCommon.Helpers.Setting.CommonSetting.IsProd()) { if (e is ExceptionFilterEventArgs exceptionFilter) { if (exceptionFilter.Exception is HttpException httpException && httpException.Message.StartsWith(_exceptionMsg)) { Response.Redirect( "/" ); } } Response.Clear(); Server.ClearError(); Response.StatusCode = 404; } } |
3、排除 Elmah 404 寄信通知
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public void ErrorMail_Filtering( object sender, ExceptionFilterEventArgs e) { if (e.Exception is HttpException httpException && (httpException.GetHttpCode() == 404 || httpException.Message.StartsWith(_exceptionMsg))) { e.Dismiss(); } } |
4、自定 Elmah 发信主旨
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void ErrorMail_Mailing( object sender, Elmah.ErrorMailEventArgs e) { string machineName = "none server" ; try { if (Request != null ) { machineName = Request.ServerVariables[ "HTTP_HOST" ]; } } catch { } // 取得 Elamh ErrorMail 的主旨 // "$MachineName$ at $ErrorTime$ : {0}" string elmahSubject = e.Mail.Subject; //替換 ErrorMail 的主旨內容 string emailSubject = string .Format( "BigCRM.Web Error => {0}" , elmahSubject .Replace( "$MachineName$" , machineName) ); e.Mail.Subject = emailSubject; } |
5、web.config配置
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< elmah > <!-- See http://code.google.com/p/elmah/wiki/SecuringErrorLogPages for more information on remote access and securing ELMAH. --> < security allowRemoteAccess = "false" /> </ elmah > < location path = "elmah.axd" inheritInChildApplications = "false" > < system.web > < httpHandlers > < add verb = "POST,GET,HEAD" path = "elmah.axd" type = "Elmah.ErrorLogPageFactory, Elmah" /> </ httpHandlers > <!-- See http://code.google.com/p/elmah/wiki/SecuringErrorLogPages for more information on using ASP.NET authorization securing ELMAH. <authorization> <allow roles="admin" /> <deny users="*" /> </authorization> --> </ system.web > < system.webServer > < handlers > < add name = "ELMAH" verb = "POST,GET,HEAD" path = "elmah.axd" type = "Elmah.ErrorLogPageFactory, Elmah" preCondition = "integratedMode" /> </ handlers > </ system.webServer > </ location > |
运行效果
总结
ELMAH对于中小项目来说不失为一种不错的选择;
以上就是c# 用ELMAH日志组件处理异常的详细内容,更多关于c# ELMAH日志组件的资料请关注服务器之家其它相关文章!
原文链接:https://www.cnblogs.com/lyl6796910/p/14270638.html