C和C#两种方式实现简单的邮件发送

C??C#涓ょ??瑰?瀹??扮????????浠跺????

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??瀹逛负??杩?涓ょ??瑰???????浠?-1.C璇?瑷???????浠?2.C#??????浠?

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涓?,C璇?瑷?杩?琛???浠剁??????

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C璇?瑷???????浠剁??姝ラ?ょ??绠???瑙ｆ??:

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1.??寤?CP杩???socket()

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2.杩??ュ?伴??绠辨???″??OCKADDR_IN,connect()

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3.??绠辩?ㄦ?峰??瀵???璁よ???诲?"EHLO smtp.163.com\r\n" ?? "AUTHLOGIN\r\n"

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4.??????浠朵富棰???瀹?

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??a.???? "MAIL FROM:<"??浠剁???????瑰?板??">\r\n"//

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??b.???? "RCPT TO:<"??浠舵?ユ?舵?圭???板??">\r\n"

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c.????"DATA\r\n"

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d.??????浠跺ご(From,To,Subject,Date绛?),??浠朵?(??浠朵???涓虹┖)

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e.娣诲????浠跺??瀹???浠ユ坊??澶?涓?,??浠朵???浠ヤ?娣诲??)

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5.???虹?诲?????"QUIT\r\n"

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6.?抽??TCP杩???losesocket(connection);

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C璇?瑷??抽??浠ｇ??濡?涓?:

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//??寤?CP杩???

if ((connection = socket(AF_INET,SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET)

{???

returnINVALID_SOCKET;

}

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//杩??ュ?伴??绠辨???″??

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void ConnectToServer(SOCKETconnection,const char *serverName)

{?

//璁剧疆SockAddr_In?板??缁???????

SOCKADDR_INserAddr;??

serAddr.sin_family= AF_INET;??

serAddr.sin_port= htons(SMTP_PORT);??

//?ヨ??CAsysSocket::Connect()??

serAddr.sin_addr.s_addr= inet_addr(serverName);??

if(serAddr.sin_addr.s_addr == INADDR_NONE)??

{????

LPHOSTENT lphost;????

lphost = gethostbyname(serverName);????

if (lphost != NULL)???????

serAddr.sin_addr.s_addr =((LPIN_ADDR)lphost->h_addr)->S_un.S_addr;????

else???????

return;???

}??

//杩??ユ???″????

connect(connection,(SOCKADDR *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)?? return;

}

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//璁よ???诲?

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//璁よ???诲?

BOOL AuthLogin(SOCKET connection, constchar *serverName,const char *userAccount, const char *password)

{??

//????EHLO%SMTP-ServerName%???? 璇存??:HELO ??涓?甯?韩浠介??璇???,?? EHLO ??甯?韩浠介??璇???

charszHello[PARA_BUF] = { 0 };??

sprintf(szHello,"EHLO %s\r\n", serverName); ?????????????????????//"EHLO%s\r\n"?? if (!send_rev(connection,szHello, GENERIC_SUCCESS))?????

return FALSE;???

//????AUTHLOGIN??

if(!send_rev(connection, "AUTH LOGIN\r\n",?? AUTHLOGIN_SUCCESS))? // "AUTH LOGIN\r\n"?????

return FALSE;???

//????缁?杩?Base64缂??????ㄦ?疯处?仿??

charszAccount[100]={0};??

base64_encode(userAccount,strlen(userAccount), &szAccount);???//base64缂?????

strcat(szAccount,"\r\n");??

if(!send_rev(connection, szAccount, AUTHLOGIN_SUCCESS))??????? //璐??仿?????????

return FALSE;???

//????缁?杩?Base64缂?????瀵?????

charszPassword[100]={0};??

base64_encode(password,strlen(password), &szPassword);?????????

strcat(szPassword,"\r\n");??

if(!send_rev(connection, szPassword, AUTH_SUCCESS))??????????? //瀵???????

return FALSE;??

return TRUE;

}

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//??????浠?????浜??ㄦ?风?????烘??浣?QUIT)

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//??????浠?

BOOL SendMail(SOCKET connection,const char*from,?

const char *to,

const char *subject,

const char*body,

const char*userName,

const char*filePath)

{??

charszFrom[PARA_BUF] = { 0 };??

charszTo[PARA_BUF] = { 0 };??

charszSubject[PARA_BUF] = { 0 };???

charszBodyHead[PARA_BUF * 10] = { 0 };??

charszBody[PARA_BUF * 20] = { 0 };???

charszDateTime[PARA_BUF] = { 0 };??

char*szContent=NULL;??????????????????

//??浠剁????瀹?????姝ｆ??????淇℃??,??浠跺??瀹逛俊??绛??

if(!chars_malloc(&szContent, MAX_FILE_SIZE*4/3 + M ) )??

{?????

return FALSE;??

}???

//????Header涓???MailFrom??

sprintf(szFrom,"MAIL FROM:<%s>\r\n", from);?????????? //?MAIL FROM:<%s>\r\n??

if(!send_rev(connection, szFrom, GENERIC_SUCCESS) )?????

return FALSE;???

//????Header涓?RCPT TO??

sprintf(szTo,"RCPT TO:<%s>\r\n", to);?????????????? //?? RCPT TO:<%s>\r\n??

if(!send_rev(connection, szTo, GENERIC_SUCCESS))?????

return FALSE;???

//????DATA\r\n??

if(!send_rev(connection, "DATA\r\n", DATA_SUCCESS))??? //??DATA\r\n?????

return FALSE;???

//杩?琛? Body 澶????????

sprintf(szFrom,"FROM:%s<%s>\r\n", userName, from);???? //content??

sprintf(szTo,"TO:<%s>\r\n", to);??

time_t ltime =time(NULL);??

_tzset();??

sprintf(szDateTime,"Date:%s", ctime(&ltime));??

sprintf(szSubject,"Subject:%s\r\n", subject);???

sprintf(szBodyHead,"X_Mailer:ntSmtp[ch]\r\n", subject);??

strcat(szBodyHead,"MIME_Version:1.0\r\n");??

strcat(szBodyHead,"Content-?type:multipart/mixed;Boundary=ntSmtp\r\n\r\n");??

strcat(szBodyHead,"--ntSmtp\r\n");??

strcat(szBodyHead,"Content-type:text/plain;Charset=gb2312\r\n");??

strcat(szBodyHead,"Content_Transfer-Encoding:8bit\r\n\r\n");???

sprintf(szBody,"%s\r\n\r\n", body);???

//杩??ユ??content?????ㄥ????瀹孤??

strcat(szContent,szFrom);??

strcat(szContent,szTo);??

strcat(szContent,szDateTime);??

strcat(szContent,szSubject);??

strcat(szContent,szBodyHead);??

strcat(szContent,szBody);???

if (filePath !=NULL)??

{??????????

//灏???浠跺??瀹规坊????zContent?????

AppendAttachment( &szContent, filePath);?????

//AppendAttachment(&szContent, filePath);??

}??

//娣诲??缁?????璁奥??????

strcat(szContent,"\r\n.\r\n");?????? //? \r\n.\r\n???

//????Content??

if (!send_rev(connection, szContent, GENERIC_SUCCESS) )?????

return FALSE;???

//????Quit,???虹?诲???

if(!send_rev(connection, "QUIT\r\n", QUIT_SUCCESS) )? //"QUIT\r\n"?????

return FALSE;???

free(szContent);??

return TRUE;

}

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浜?,C#杩?琛???浠剁??????

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??杩?C#杩?琛???浠剁??????,涓???瑕?C璇?瑷??ｆ?峰?椤绘???′?杩??ラ??淇¤?绋?涓???璇稿?缁???,濡???杩?琛?绠???????浠跺????,????瑕?浣跨?ㄥ?颁袱涓?绫?涓?涓???MailMessage绫?璇ョ被瀹?涔?浜?涓?灏?瀹??撮??浠跺???瑕???淇℃??(??????浠剁?????????ユ?舵??涓婚?,姝ｆ????瀹???浠剁??淇℃??),???涓???SmtpClient绫?璇ョ被???ㄤ????″?ㄧ??????浣?,??杩?璇ョ被??瀵硅薄,浣?灏卞??浠ヨ?剧疆??绠辨???″?ㄧ???板??(渚?濡?:smtp.163.com),??绠辩???诲?璐??蜂?瀵???绛?,??缁???杩?璇ョ被??瀵硅薄渚垮??浠ュ?MailMessage??淇℃???????版??瀹?????绠变?.

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C#??????浠剁??姝ラ?ょ??绠???瑙ｆ??:

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1.??寤?ailMessage瀵硅薄,璁剧疆MailMessage???稿?虫?????版??; ????From,To,Subject,Body,Attachments绛?淇℃??.

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2.??寤烘???″?ㄧ??瀵硅薄SmtpClient,璁剧疆???″????绠辫处??瀵???.

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3.??杩?SmtpClient瀵硅薄,灏?MailMessage??浠朵俊???????哄?? ??浠ヨ?琛???????????浠ュ??寮?姝ュ????(涓??诲?绾跨?).

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C#?抽??浠ｇ??濡?涓?:

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//寮?姝ュ??????浠?

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?//????????

?private void btn_Send_Click(object sender,EventArgs e)

?{

????//??寤?ailMessage瀵硅薄

????MailAddress from = new MailAddress("[email?protected]");

????MailAddress to = new MailAddress("[email?protected]");

????MailMessage mailMessage = new MailMessage(from, to) ;

????mailMessage.Subject="涓婚?";

????mailMessage.Body="杩???涓?灏??ヨ??杩??圭????浠?";??

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????Attachment attachment01 = new Attachment("E:\\01.jpg"); //??浠?

????Attachment attachment02 = new Attachment("E:\\02.mp3");

??? ?mailMessage.Attachments.Add(attachment01);

????mailMessage.Attachments.Add(attachment02);

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????//??寤?mtpClient瀵硅薄????? ??绠辨???″??mtp.163.com

????SmtpClient smtpClient = new SmtpClient("smtp.163.com");?

????smtpClient.UseDefaultCredentials = true;

? ???smtpClient.Credentials =

????new NetworkCredential("??绠辫处??, "?诲?瀵???");?? //??绠辫?よ???诲?

????//smtpClient.Timeout = 5000;

????try

????{

????//浣跨?ㄥ?姝ュ????,涓?浼??诲?璇ョ嚎绋?

????smtpClient.SendCompleted += new //瀹???????璋??ㄥ??璋??芥??

????SendCompletedEventHandler(SendCompletedCallback);

????smtpClient.SendAsync(mailMessage, mailMessage);??

????}

????catch(Exception ex)

????{

??????mailMessage.Dispose();??? //涓诲?ㄩ???捐?婧?

??????smtpClient.Dispose();

??????MessageBox.Show("????澶辫触!?"+System.Environment.NewLine+

???????????????????"??璇?淇℃??:"+ex.Message);

????}

???return;

?}????

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//寮?姝ュ????瀹???????璋??芥??

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//寮?姝ュ??????浠跺????????璋??芥??

public static voidSendCompletedCallback(object sender, AsyncCompletedEventArgs e)

{??

SmtpClientsmtpClient = (SmtpClient)sender;??

//MailMessage ?mailMessage = (MailMessage)e.UserState;??

if (e.Cancelled)??

{????

MessageBox.Show("Send canceled.");??

}??

if (e.Error !=null)????????

{????

MessageBox.Show("??璇?淇℃??: "+e.Error.ToString() );??

}??

else??

{????

MessageBox.Show("Message Sent.");????

smtpClient.Dispose();????

//mailMessage.Dispose();??

}

}

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?荤?:??杩?涓ょ??瑰?瀹??颁?绠???????浠跺????????浠?涓???浠ユ??杈?杩?涓ょ?璇?瑷??ㄥ???颁???宸?寮???

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C璇?瑷???瀹??版?村??璁茬┒娴?绋???缁???,浣???瑕?姣?杈?娣辩????寰?缃?缁????稿?崇?ヨ????SMTP???稿?冲??璁?,

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浼??规????浠ユ?村???存?ョ????浣???浠剁??????杩?绋?,缂虹?瑰氨??瀹??拌捣?ユ??杈?绻???,瀹规??寮?甯?

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C#??瀹??板氨?村??绠?娲???浜?浜?,瀹?灏?瑁?浜???浠跺????杩?绋?涓???寰?澶?缁???,杩?浜?缁???瀵圭?ㄦ?锋?ヨ?村苟涓???

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蹇?瑕???,浣跨?ㄨ??????瑕??ラ????涓???瑕???绫?MailMessage,SmtpClient绫???浣跨????涓?绋?搴?涓???浼?姣?

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C绋?搴?瑕??ョ??绋冲??,涓?瀹规??????寮?甯搁??璇?.