每当我启动服务时，邮件不会发送，但当我进行调试时，它会像我预期的那样发送邮件

本文关键字：服务 启动 调试 | 更新日期: 2023-09-27 18:27:41

每当我启动服务时，它都不会执行任何操作，因为服务不是"发送邮件"，但当我进行调试时，它会像我预期的那样发送邮件。我不知道为什么会这样。我认为这不是代码的问题。当我调试时，代码运行良好。请推荐我。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.Net.Mail;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
namespace MyUtility1
{
    public partial class Service1 : ServiceBase
    {
        public Service1()
        {
            InitializeComponent();
            OnStart(null);
        }

        protected override void OnStart(string[] args)
        {
            Timer t1;
            t1 = new System.Timers.Timer();
            t1.Enabled = true;
            Task.Run(() =>
                {
                EnvVars envVars = EnvVars.GetSettings();
                });
        }

        protected override void OnStop()
        {
        }     
    }  
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Net.Mail;
using System.ServiceProcess;
using System.Threading.Tasks;
using System.Timers;
using System.Configuration;
using System.IO;
namespace MyUtility1
{
  public  class EnvVars
    {
        public static EnvVars GetSettings()
        {    EnvVars envVars = new EnvVars();
            String[] files = Directory.GetFiles(@"H:''EDI", "*.brl", SearchOption.AllDirectories);
            if (files.Length > 0)
            {
                var mail_server1 = ConfigurationManager.AppSettings.Get("mail_server");
                var mail_from_address1 = ConfigurationManager.AppSettings.Get("mail_from_address");
                var mail_address1 = ConfigurationManager.AppSettings.Get("mail_address");
                MailMessage mm = new MailMessage(mail_from_address1, mail_address1);
                mm.Body = ConfigurationManager.AppSettings.Get("body");
                mm.Subject = ConfigurationManager.AppSettings.Get("subject");
                mm.IsBodyHtml = true;
                int leng = files.Length;
                for (int i = 0; i < files.Length; i++)
               {
                  String sep = "   |  ";
                    String Body1 = String.Join(sep, files, 0, leng);
                   mm.Body = Body1;
                }
                SmtpClient client = new SmtpClient(mail_server1);
                try
                {
                    client.Send(mm);
                }
                catch (Exception e) { }
            }
           return envVars;
        }
    }
}
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
      <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
    <system.web>
      <authorization>
        <allow users="dkamd@gmail.com" />
      </authorization>
    </system.web>
  <system.net>
    <mailSettings>
      <smtp deliveryMethod="Network">
        <network host="localhost"
                 port="25"
                 defaultCredentials="true" />
      </smtp>
    </mailSettings>
  </system.net>
  <appSettings>
    <add key="mail_server" value="mail.gmail.com"/>
    <add key="mail_address" value="dkamd@gmail.com"/>
    <add key="mail_from_address" value="dkamd@gmail.com"/>
    <add key="body"  value="New file found"/>
    <add key="subject" value="BRL files"/>
    </appSettings>
  </configuration>

每当我启动服务时，邮件不会发送，但当我进行调试时，它会像我预期的那样发送邮件

可能在调试时，您的应用程序有足够的时间发送电子邮件。

将您的代码更改为以下代码：

Task t = Task.Run(() => {
            EnvVars envVars = EnvVars.GetSettings();
            });
t.Wait();

您可能需要检查权限。该服务在哪个帐户下运行？它是否有访问文件系统的权限？（也可能是邮件客户端的问题，尽管可能性较小）

为了检查这个问题，将try-catch with log添加到代码中。

类似这样的东西：

 using System;
public  class EnvVars
    {
        public static EnvVars GetSettings()
        {  
            EnvVars envVars = new EnvVars();
        try{
            //TODO - log begin work
        String[] files = Directory.GetFiles(@"H:''EDI", "*.brl", SearchOption.AllDirectories);
        if (files.Length > 0)
        {
            var mail_server1 = ConfigurationManager.AppSettings.Get("mail_server");
            var mail_from_address1 = ConfigurationManager.AppSettings.Get("mail_from_address");
            var mail_address1 = ConfigurationManager.AppSettings.Get("mail_address");
            MailMessage mm = new MailMessage(mail_from_address1, mail_address1);
            mm.Body = ConfigurationManager.AppSettings.Get("body");
            mm.Subject = ConfigurationManager.AppSettings.Get("subject");
            mm.IsBodyHtml = true;
            int leng = files.Length;
            for (int i = 0; i < files.Length; i++)
           {
              String sep = "   |  ";
                String Body1 = String.Join(sep, files, 0, leng);
               mm.Body = Body1;
            }
            SmtpClient client = new SmtpClient(mail_server1);
                client.Send(mm);
        }
        }
            catch (Exception e)
        {
                //TODO - log exception
            }

        finally
        {
       return envVars;
        }
    }
}

}

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