[JAVA100 example]047, using JavaMail to send mail

Import java.util.*;


import java.io.*;


import javax.mail.*;


import javax.mail.internet.*;


import javax.activation.*;


/**


* <p>title: Using JavaMail to send mail </p>


* <p>description: Demonstrates how to use the JavaMail package to send e-mail. This example can send multiple attachments </p>


* <p>copyright:copyright (c) 2003</p>


* <p>Filename:Mail.java</p>


* @version 1.0


*/


public class Mail {


String to = "";//Recipient


String from = "";/sender


String host = "";//smtp host


String username = "";


String password = "";


String filename = "";//attachment file name


String subject = "";//Message subject


String content = "";//Message body


vector file = new vector ()//Attachment file Collection


/**


*<br> method Description: Default Builder


*<br> Input Parameters:


*<br> return type:


*/


public Mail () {


}


/**


*<br> Method Description: constructor, provide direct parameter incoming


*<br> input Parameters:


*<br> return type:


*/


public Mail (String to,string from,string smtpserver,string username,string password,string content) {


this.to = to;


this.from = from;


this.host = SmtpServer;


this.username = Username;


This.password = password;


this.subject = subject;


this.content = content;


}


/**


*<br> Method Description: Set mail server address


*<br> input parameter: String host Mail server address name


*<br> return type:


*/


public void Sethost (String host) {


this.host = host;


}


/**


*<br> method Description: Set login server checksum password


*<br> input Parameters:


*<br> return type:


*/


public void SetPassword (String pwd) {


This.password = pwd;


}


/**


*<br> Method Description: Set login server verify user


*<br> input Parameters:


*<br> return type:


*/


public void Setusername (String USN) {


this.username = USN;


}


/**


*<br> Method Description: Set mail send destination mailbox


*<br> input Parameters:


*<br> return type:


*/


public void Setto (String to) {


this.to = to;


}


/**


*<br> Method Description: Set the message to send the source mailbox


*<br> input Parameters:


*<br> return type:


*/


public void Setfrom (String from) {


this.from = from;


}


/**


*<br> Method Description: Set the message subject


*<br> input Parameters:


*<br> return type:


*/


public void Setsubject (String subject) {


this.subject = subject;


}


/**


*<br> Method Description: Set the message content


*<br> input Parameters:


*<br> return type:


*/


public void SetContent (String content) {


this.content = content;


}


/**


*<br> Method Description: Convert the theme to Chinese


*<br> input parameter: String strText


*<br> return type:


*/


public string Transferchinese (string strText) {


try{


StrText = Mimeutility.encodetext (New String (Strtext.getbytes (), "GB2312"), "GB2312", "B");


}catch (Exception e) {


E.printstacktrace ();


　}


return strText;


}


/**


*<br> Method Description: Add attachments to the attachment


*<br> input Parameters:


*<br> return type:


*/


public void Attachfile (String fname) {


file.addelement (fname);


}


/**


*<br> Method Description: Send mail


*<br> input Parameters:


*<br> return Type: Boolean success is true and vice versa false


*/


public boolean SendMail () {


//Construction mail session


Properties props = System.getproperties ();


props.put ("Mail.smtp.host", host);


props.put ("Mail.smtp.auth", "true");


session session=session.getdefaultinstance (props, New Authenticator () {


public passwordauthentication getpasswordauthentication () {


return new Passwordauthentication (Username,password);


　 }


　});





try {


Constructs the mimemessage and sets the basic value


mimemessage msg = new MimeMessage (session);


Msg.setfrom (New InternetAddress (from));


internetaddress[] address={new internetaddress (To)};


msg.setrecipients (message.recipienttype.to,address);


subject = Transferchinese (subject);


Msg.setsubject (subject);





//Construction multipart


Multipart MP = new Mimemultipart ();





//Add body to multipart


MimeBodyPart mbpcontent = new MimeBodyPart ();


Mbpcontent.settext (content);


//Add to MimeMessage (multipart representative body)


Mp.addbodypart (mbpcontent);





//Add attachments to multipart


enumeration efile=file.elements ();


while (efile.hasmoreelements ()) {





MimeBodyPart mbpfile = new MimeBodyPart ();


Filename=efile.nextelement (). toString ();


Filedatasource FDS = new Filedatasource (filename);


Mbpfile.setdatahandler (New DataHandler (FDS));


Mbpfile.setfilename (Fds.getname ());


//Add to MimeMessage (multipart representative attachment)


Mp.addbodypart (Mbpfile);


}





file.removeallelements ();


//Add MimeMessage to multipart


Msg.setcontent (MP);


msg.setsentdate (New Date ());


//Send mail


transport.send (msg);





} catch (Messagingexception Mex) {


Mex.printstacktrace ();


Exception ex = null;


if ((Ex=mex.getnextexception ())!=null) {


Ex.printstacktrace ();


　　}


return false;


　}


return true;


}


/**


*<br> Method Description: Main method, for testing


*<br> input Parameters:


*<br> return type:


*/


public static void Main (string[] args) {


Mail sendmail = new mail ();


sendmail.sethost ("smtp.sohu.com");


sendmail.setusername ("Du_jiang");


Sendmail.setpassword ("31415926");


Sendmail.setto ("dujiang@sricnet.com");


sendmail.setfrom ("du_jiang@sohu.com");


sendmail.setsubject ("Hello, this is the test!") ");


sendmail.setcontent ("Hello this is a test with multiple attachments!") ");


//mail sendmail = new Mail ("dujiang@sricnet.com", "du_jiang@sohu.com", "smtp.sohu.com", "Du_jiang", "31415926", "Hello "The stomach, how are you?" ");


sendmail.attachfile ("C:\\Test.txt");


sendmail.attachfile ("Dnd.jar");


Sendmail.sendmail ();


}


}//end