Java Mail Send Demo

1, first import the jar package in the project, I use the Mail-1.4.jar

2. Here is my code:

public class Sendmailutil {

private static final Logger Logger = Logger.getlogger (Sendmailutil.class);

//define sender, recipient, subject, etc.

private String to = null;//recipient e-mail address

private String from = null;//Sender e-mail address

private String password = null;//Sender password

Private String host = null;//mail server

private String filename = null;

A collection of file path names for saving send attachments

private Vector<string> fileList = new vector<string> ();

/*

* Can transmit the sender of the parameters such as the construction

*/

Public Sendmailutil (string to, string from, string password,

String smtpserver) {

//Initialize sender, recipient, subject, etc.

this.to = to;

this.from = from;

this.password = password;

this.host = smtpserver;

}

/*

* This method is used to collect the attachment name

*/

public void Attachfile (String fname) {

filelist.addelement (fname);

}

/*

* How to start sending letters

*/

Public boolean startsend (String emailtitle, String emailcontent) {

if (Stringutils.isblank (emailcontent)) {

logger.error ("The message content cannot be empty!") ");

return false;

}

try {

if (Stringutils.isblank (emailcontent)) {

throw new NullPointerException ("The content sent cannot be empty!") ");

}

//Create Properties Object

Properties props = System.getproperties ();

//Create a mail server

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

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

props.put ("Mail.smtp.password", "0");

//Get the default Dialog object

Session session = Session.getinstance (props,

New Popupauthenticator (This.from, This.password));

//Create a message and initialize the elements of the message

mimemessage msg = new MimeMessage (session);

Msg.setfrom (New InternetAddress (from));

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

msg.setrecipients (Message.RecipientType.TO, address);

//GetBytes ("Iso-8859-1")

//String Title=new string (emailtitle.getbytes ("iso-8859-1"), "GBK");

Msg.setsubject (emailtitle);

//BodyPart will be added to the multipart created here

Multipart MP = new Mimemultipart ("subtype");

//Add HTML body

bodypart htmlBody = new MimeBodyPart ();

Mimemultipart htmlcontent = new Mimemultipart ("related");

bodypart msgcontent = new MimeBodyPart ();

Htmlcontent.addbodypart (msgcontent);

msgcontent.setcontent (emailcontent, "text/html;charset=utf-8");

htmlbody.setcontent (htmlcontent);

Mp.addbodypart (htmlBody);

//Use enumerators to easily iterate through the collection

Enumeration efile = Filelist.elements ();

//Check if there are more objects in the sequence

while (efile.hasmoreelements ()) {

MimeBodyPart MBP = new MimeBodyPart ();

//select each attachment name

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

//Get Data source

Filedatasource FDS = new Filedatasource (filename);

//Get the attachment itself and enter BodyPart

Mbp.setdatahandler (New DataHandler (FDS));

//Get the same file name into BodyPart

Mbp.setfilename (Fds.getname ());

Mp.addbodypart (MBP);

}

//Remove all elements from the collection

filelist.removeallelements ();

//multipart added to the letter

Msg.setcontent (MP);

//Set the sending date of the letter header

msg.setsentdate (New Date ());

//Send a letter

transport.send (msg);

} catch (Exception e) {

e.printstacktrace ();

return false;

}

return true;

}

//Authentication class

class Popupauthenticator extends Authenticator {

private String username;

private String password;

public Popupauthenticator (string user, String pass) {

this.username = user;

This.password = pass;

}

protected Passwordauthentication getpasswordauthentication () {

return new passwordauthentication (username, password);

}

}

//test

public static void Main (string[] args) {

sendmailutil mail = new Sendmailutil ("[Email protected]",

"[email protected]", "123456", "smtp.163.com");

mail.attachfile ("C:\\users\\awen\\desktop\\a.txt");

mail.startsend ("Handover document", "received please reply");

System.out.println ("Mail send Complete ...");

}

3, test success, we can try.

Java Mail Send Demo