用Socket发邮件的代码(可以群发)

群发邮件系统实现

最新推荐文章于 2021-03-10 08:38:04 发布

最新推荐文章于 2021-03-10 08:38:04 发布 · 208 阅读

文章标签：

#Socket #ASP #ASP.net #UI #Web

本文介绍了一个基于C#实现的群发邮件系统，通过网页界面配置SMTP服务器、用户名、密码等信息，并支持批量输入收件人地址进行邮件群发。系统采用TCP客户端连接SMTP服务器，实现了登录认证、邮件构建及发送等功能。

qunFa.aspx文件的代码：

<%...@Pagelanguage="c#"Codebehind="qunFa.aspx.cs"AutoEventWireup="false"Inherits="liuwei.hanmail.qunFa"%>

<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.0Transitional//EN">

<HTML>

<HEAD>

<title>qunFa</title>

<metacontent="MicrosoftVisualStudio.NET7.1"name=GENERATOR>

<metacontent=C#name=CODE_LANGUAGE>

<metacontent=JavaScriptname=vs_defaultClientScript>

<metacontent=http://schemas.microsoft.com/intellisense/ie5name=vs_targetSchema>

</HEAD>

<bodyMS_POSITIONING="GridLayout">

<formid=Form1method=postrunat="server">

<asp:ListBoxid="ListBoxMsg"style="Z-INDEX:118;LEFT:136px;POSITION:absolute;TOP:344px"

runat="server"Width="440px"Height="184px"></asp:ListBox>

<asp:Labelid="Label11"style="Z-INDEX:108;LEFT:120px;POSITION:absolute;TOP:320px"runat="server">信息查看</asp:Label>

<asp:Labelid="Label10"style="Z-INDEX:117;LEFT:112px;POSITION:absolute;TOP:16px"runat="server">SMTP服务器地址</asp:Label>

<asp:Labelid="Label9"style="Z-INDEX:100;LEFT:128px;POSITION:absolute;TOP:48px"runat="server">用户名</asp:Label>

<asp:TextBoxid="TextBoxSrv"style="Z-INDEX:101;LEFT:264px;POSITION:absolute;TOP:24px"

runat="server"Width="240px"></asp:TextBox>

<asp:Labelid="Label8"style="Z-INDEX:102;LEFT:360px;POSITION:absolute;TOP:48px"runat="server">口令</asp:Label>

<asp:TextBoxid="TextBoxUser"style="Z-INDEX:103;LEFT:192px;POSITION:absolute;TOP:48px"

runat="server"Width="152px"></asp:TextBox>

<asp:TextBoxid="TextBoxPwd"style="Z-INDEX:104;LEFT:416px;POSITION:absolute;TOP:48px"

runat="server"Width="168px"TextMode="Password"></asp:TextBox>

<asp:Labelid="Label4"style="Z-INDEX:105;LEFT:128px;POSITION:absolute;TOP:80px"runat="server">发信人</asp:Label>

<asp:Labelid="Label5"style="Z-INDEX:106;LEFT:360px;POSITION:absolute;TOP:80px"runat="server">收信人</asp:Label>

<asp:TextBoxid="TextBoxSend"style="Z-INDEX:107;LEFT:192px;POSITION:absolute;TOP:80px"

runat="server"></asp:TextBox>

<asp:TextBoxid="TextBoxRev"style="Z-INDEX:109;LEFT:416px;POSITION:absolute;TOP:80px"

runat="server"Width="168px"></asp:TextBox>

<asp:Labelid="Label6"style="Z-INDEX:110;LEFT:128px;POSITION:absolute;TOP:112px"runat="server">主题</asp:Label>

<asp:TextBoxid="TextBoxSubject"style="Z-INDEX:112;LEFT:192px;POSITION:absolute;TOP:104px"

runat="server"Width="392px"></asp:TextBox>

<asp:TextBoxid="TextBoxMailText"style="Z-INDEX:113;LEFT:144px;POSITION:absolute;TOP:160px"

runat="server"Width="440px"TextMode="MultiLine"Height="120px"></asp:TextBox>

<asp:Labelid="Label7"style="Z-INDEX:114;LEFT:128px;POSITION:absolute;TOP:136px"runat="server">邮件内容</asp:Label>

<asp:Buttonid="ButtonSend"style="Z-INDEX:115;LEFT:464px;POSITION:absolute;TOP:296px"

runat="server"Text="发送"></asp:Button>

<asp:Labelid="LabelErr"style="Z-INDEX:116;LEFT:696px;POSITION:absolute;TOP:136px"

runat="server"></asp:Label></FORM>

</body>

</HTML>

qunFa.aspx.cs的代码：

usingSystem;

usingSystem.Collections;

usingSystem.ComponentModel;

usingSystem.Data;

usingSystem.Drawing;

usingSystem.Web;

usingSystem.Web.SessionState;

usingSystem.Web.UI;

usingSystem.Web.UI.WebControls;

usingSystem.Web.UI.HtmlControls;

usingSystem.IO;

usingSystem.Net;

usingSystem.Net.Sockets;

namespaceSendmail

...{

/**////<summary>

///qunFa的摘要说明。

///</summary>

publicclassqunFa:System.Web.UI.Page

...{

protectedSystem.Web.UI.WebControls.LabelLabelErr;

protectedSystem.Web.UI.WebControls.ButtonButtonSend;

protectedSystem.Web.UI.WebControls.LabelLabel7;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxMailText;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxSubject;

protectedSystem.Web.UI.WebControls.LabelLabel6;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxRev;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxSend;

protectedSystem.Web.UI.WebControls.LabelLabel5;

protectedSystem.Web.UI.WebControls.LabelLabel4;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxPwd;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxUser;

protectedSystem.Web.UI.WebControls.LabelLabel8;

protectedSystem.Web.UI.WebControls.TextBoxTextBoxSrv;

protectedSystem.Web.UI.WebControls.LabelLabel9;

protectedSystem.Web.UI.WebControls.LabelLabel11;

protectedSystem.Web.UI.WebControls.ListBoxListBoxMsg;

protectedSystem.Web.UI.WebControls.LabelLabel10;

TcpClientsmtpSrv;

NetworkStreamnetStrm;

stringCRLF=" ";

privatevoidPage_Load(objectsender,System.EventArgse)

...{

}

Web窗体设计器生成的代码#regionWeb窗体设计器生成的代码

overrideprotectedvoidOnInit(EventArgse)

...{

//CODEGEN:该调用是ASP.NETWeb窗体设计器所必需的。

InitializeComponent();

base.OnInit(e);

}

/**////<summary>

///设计器支持所需的方法-不要使用代码编辑器修改

///此方法的内容。

///</summary>

privatevoidInitializeComponent()

...{

this.ButtonSend.Click+=newSystem.EventHandler(this.ButtonSend_Click);

this.Load+=newSystem.EventHandler(this.Page_Load);

}

#endregion

privatevoidButtonSend_Click(objectsender,System.EventArgse)

...{

this.ListBoxMsg.Items.Clear();

string[]userList=this.TextBoxRev.Text.Split(',');

for(inti=0;i<userList.Length;i++)

Qun(userList[i]);

}

publicvoidQun(stringuserList)

...{

try

...{

stringdata;

smtpSrv=newTcpClient(this.TextBoxSrv.Text,25);

netStrm=smtpSrv.GetStream();

StreamReaderrdStrm=newStreamReader(smtpSrv.GetStream());

this.WriteStream("EHLOLocal");

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

this.WriteStream("AUTHLOGIN");

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

data=this.TextBoxUser.Text;

data=AuthStream(data);

this.WriteStream(data);

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

data=this.TextBoxPwd.Text;

data=AuthStream(data);

this.WriteStream(data);

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

data="MAILFROM:<"+this.TextBoxSend.Text+">";

this.WriteStream(data);

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

data="RCPTTO:<"+userList+">";

this.WriteStream(data);

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

this.WriteStream("DATA");

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

data="Date:"+DateTime.Now;

this.WriteStream(data);

data="From:"+this.TextBoxSend.Text;

this.WriteStream(data);

data="TO:"+userList;

this.WriteStream(data);

data="SUBJECT:"+this.TextBoxSubject.Text;

this.WriteStream(data);

data="Reply-TO:"+this.TextBoxSend.Text;

this.WriteStream(data);

this.WriteStream("");

this.WriteStream(this.TextBoxMailText.Text);

this.WriteStream(".");

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

this.WriteStream("QUIT");

this.ListBoxMsg.Items.Add(rdStrm.ReadLine());

netStrm.Close();

rdStrm.Close();

this.LabelErr.Text="发送成功!";

}

catch(Exceptionex)

...{

this.LabelErr.Text=ex.ToString();

}

privatevoidWriteStream(stringstrCmd)

...{

strCmd+=CRLF;

byte[]bw=System.Text.Encoding.Default.GetBytes(strCmd);

netStrm.Write(bw,0,bw.Length);

}

privatestringAuthStream(stringstrCmd)

...{

try

...{

byte[]by=System.Text.Encoding.Default.GetBytes(strCmd);

strCmd=Convert.ToBase64String(by);

}

catch(Exceptionerr)

...{

returnerr.ToString();

}

returnstrCmd;

}