c# - 发送带有 Global.asax 文件的电子邮件

Question

如果出现未处理的错误，我想向管理员发送一封电子邮件，其中包含所发生错误的信息。以下是我的 web.config 和 Global.asax.cs 文件中的内容，重定向有效但电子邮件无效:

<system.web>
    <customErrors mode="On" defaultRedirect="error.aspx" />
</system.web>

void Application_Error(object sender, EventArgs e)
        {
            // Code that runs when an unhandled error occurs
            // Get the exception object.
            Exception error = Server.GetLastError();

            MailMessage mail = new MailMessage();
            mail.To.Add("admin@mysite.com");
            mail.Subject = "Error";
            mail.Body = "Somebody has experienced an error." + "<br><br>";
            mail.Body += error.ToString();

            mail.IsBodyHtml = true;
            SmtpClient smtp = new SmtpClient();
            smtp.Host = "smtp.gmail.com";
            smtp.EnableSsl = true;
            smtp.Credentials = new System.Net.NetworkCredential("username", "password");
            smtp.Port = 587;
            smtp.Send(mail);

            Server.ClearError();
        }

Answer 1

您应该安装 Elmah 而不是自己滚动(您可以通过 NuGet 完成)并让它为您完成工作。最好的代码是您不编写的代码。

• http://www.hanselman.com/blog/ELMAHErrorLoggingModulesAndHandlersForASPNETAndMVCToo.aspx
• http://haacked.com/archive/2007/07/24/securely-implement-elmah-for-plug-and-play-error-logging.aspx/
• http://blog.codinghorror.com/exception-driven-development/

Elmah 是一个 HttpModule，它位于 ASP.Net 堆栈之上并捕获/处理未捕获的异常:

ELMAH (Error Logging Modules and Handlers) is an application-wide error logging facility that is completely pluggable. It can be dynamically added to a running ASP.NET web application, or even all ASP.NET web applications on a machine, without any need for re-compilation or re-deployment.

Once ELMAH has been dropped into a running web application and configured appropriately, you get the following facilities without changing a single line of your code:

• Logging of nearly all unhandled exceptions.
• A web page to remotely view the entire log of recoded exceptions.
• A web page to remotely view the full details of any one logged exception, including colored stack traces.
• In many cases, you can review the original yellow screen of death that ASP.NET generated for a given exception, even with customErrors mode turned off.
• An e-mail notification of each error at the time it occurs.
• An RSS feed of the last 15 errors from the log.

配置 Elmah 发送电子邮件(在记录邮件之上)非常简单

• Send email from Elmah?
• http://proudsalopian.wordpress.com/2013/10/15/sending-error-mail-from-elmah/

如果你打算自己写，安装Log4Net并将其配置为使用 1 个或多个 SMTP appenders除了你想要/需要/想要的任何其他日志附加程序。