这篇文章主要介绍了c# 两种发送邮件的方法,帮助大家更好的理解和学习使用c#,感兴趣的朋友可以了解下
一、两种发送邮件的方法
有用到两种方式发邮件,一种是用System.Web.Mail类,另一种是System.Net.Mail类。
System.Net.Mail是作为System.Web.Mail的替代存在的。
System.Web.Mail使用时会提示已过时,但目前任然可以正常使用。
二、遇到的问题
我在使用System.Net.Mail发邮件的时候遇到一个问题,如果是用的阿里云服务器,阿里云服务器把邮件的默认25端口给禁用掉了(为的是不让邮件泛滥),25端口被封,阿里云发送SMTP邮件失败。
在网上找了一些资料,主要有以下几种方法解决:
1、在阿里云平台申请解封TCP 25 端口 (Outbound)
2、更换端口号为465 或 587 ;
3、服务器前缀加上 ssl://
4、使用System.Web.Mail发送邮件
2和3我都试用无果,阿里云服务器还是发送邮件失败,最后使用System.Web.Mail发送成功,要是有别的更好的方法请大家告知,谢谢谢谢~~
三、示例
这里我把发邮件一些相关的参数配置在ini文件里(smt服务器、端口号、发件人邮箱、发件人密码、发件人昵称、接收人邮箱)
#region 读写本地IN文件
public static string ReadIniFile(string iniFileName, string section, string key)
{
string strFileName = GetRootPath() + "\\" + iniFileName;
if (!System.IO.File.Exists(strFileName))
{
FileStream fs = System.IO.File.Create(strFileName);
fs.Close();
}
TWays.IniFile localIniFile = new TWays.IniFile(strFileName);
return localIniFile.ReadInivalue(section, key);
}
public static void WriteIniFile(string iniFileName, string section, string key, string value)
{
string strFileName = GetRootPath() + "\\" + iniFileName;
if (!System.IO.File.Exists(strFileName))
{
FileStream fs = System.IO.File.Create(strFileName);
fs.Close();
}
TWays.IniFile localIniFile = new TWays.IniFile(strFileName);
localIniFile.WriteInivalue(section, key, value);
}
#endregion
public const string MonitorLogFileName = "WmsImportSheetLog.Log";
public const string MailSetIniFileName = "MailSet.ini";
public const string MailSetSectionOption = "Option";
public const string MailSetKeySmtpServer = "SmtpServer";//smtp服务器
public const string MailSetKeySmtpPort = "SmtpPort";//端口号
public const string MailSetKeySendAddr = "SendAddr";//发件人邮箱
public const string MailSetKeySendPwd = "SendPwd";//发件人密码
public const string MailSetKeySendUser = "SendUser";//发件人名称,可随意定义
public const string MailSetKeyReceiAddr = "ReceiAddr";//收件人邮箱
//如果ini文件内没有内容就设置默认值
public void WriteMailSet()
{
string strFileName = BusiUtils.GetRootPath() + "\\" + Constant.MailSetIniFileName;
if (!System.IO.File.Exists(strFileName))
{
BusiUtils.WriteIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySmtpServer, "smtp.163.com");
BusiUtils.WriteIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySmtpPort, "465");
BusiUtils.WriteIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySendAddr, "lala12121@163.com");
string sendPwd = "lalala2017";
sendPwd = TWays.Utils.EncryptString(sendPwd);
BusiUtils.WriteIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySendPwd, sendPwd);
BusiUtils.WriteIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySendUser, "系统管理员");
//多个收件人用 ' ;' 号隔开
BusiUtils.WriteIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeyReceiAddr, "1234@qq.com;5678@qq.com;2579@qq.com;");
}
}
System.Web.Mail
public bool Process()
{
bool boolReturn = false;
try
{
string errorMsg = string.Empty;
string title = "每日单据导入情况" + "-" + DateTime.Now.ToString("yyyy-MM -dd");
string message = string.Empty;
try
{
WriteMailSet();
bool bl = true;
DataSet ds = DataAdapter.Query(SqlText.selectImportSheetErrorLog.ToUpper());
#region
if (ds == null || ds.Tables.Count == 0 || ds.Tables[0].Rows.Count <= 0)
{
message = "单据处理成功!";
}
else
{
StringBuilder sb = new StringBuilder();
sb.Append("以下为单据导入异常的消息:\r\n\r\n");
foreach (DataRow dr in ds.Tables[0].Rows)
{
bl = false;
sb.Append(" 任务编号:" + dr["TASK_CODE"].ToString() + ",\t");
sb.Append(" 任务名称:" + dr["TASK_NAME"].ToString() + ",\t");
sb.Append(" 日志消息:" + dr["MEMO"].ToString());
sb.Append("\r\n");
}
message = sb.ToString();
}
#endregion
if (bl)
{
title = "[成功]" + title;
}
}
catch (Exception Ex)
{
message = Ex.Message;
errorMsg = "邮件发送失败!错误信息:" + message;
message = "Error:" + Ex.Message;
TWays.Core.Loger.LogMessage(BusiUtils.GetRootPath() + "\\" + Constant.MonitorLogFileName, errorMsg + "\r\n", true);
return boolReturn;
}
#region 发送邮件
try
{
TWays.Core.Loger.LogMessage(BusiUtils.GetRootPath() + "\\" + Constant.MonitorLogFileName, "发送" + title + "开始\r\n", true);
bool result = Monitor(title, message, "", "");
TWays.Core.Loger.LogMessage(BusiUtils.GetRootPath() + "\\" + Constant.MonitorLogFileName, "发送" + title + "结束\r\n", true);
}
catch (Exception Ex)
{
errorMsg = "邮件发送失败!错误信息:" + Ex.Message;
TWays.Core.Loger.LogMessage(BusiUtils.GetRootPath() + "\\" + Constant.MonitorLogFileName, errorMsg + "\r\n", true);
return boolReturn;
}
#endregion
Result = "Succeed";
boolReturn = true;
}
catch (Exception ex)
{
Result = ex.Message;
}
return boolReturn;
}
private bool Monitor(string title, string message, string fileName, string shortFileName)
{
string smtpServer = BusiUtils.ReadIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySmtpServer);
string smtpPort = BusiUtils.ReadIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySmtpPort);
string sendAddr = BusiUtils.ReadIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySendAddr);
string sendPwd = Utils.DecryptString(BusiUtils.ReadIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeySendPwd));
string receiAddr = BusiUtils.ReadIniFile(Constant.MailSetIniFileName, Constant.MailSetSectionOption, Constant.MailSetKeyReceiAddr);
string errorMsg = string.Empty;
try
{
System.Web.Mail.MailMessage mmsg = new System.Web.Mail.MailMessage();
//邮件主题
mmsg.Subject = title;
//mmsg.BodyFormat = System.Web.Mail.MailFormat.Html;
//邮件正文
mmsg.Body = message;
//正文编码
mmsg.BodyEncoding = Encoding.UTF8;
//优先级
mmsg.Priority = System.Web.Mail.MailPriority.High;
System.Web.Mail.MailAttachment data = null;
//if (SUpFile != "")
//{
// SUpFile = HttpContext.Current.Server.MapPath(SUpFile);//获得附件在本地地址
// System.Web.Mail.MailAttachment attachment = new System.Web.Mail.MailAttachment(SUpFile); //create the attachment
// mmsg.Attachments.Add(attachment); //add the attachment
/
本文标题为:c# 两种发送邮件的方法
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