Simple Java Mail instance code

 

Here we use apache commons-e-mail (http://commons.apache.org/proper/commons-email/download_email.cgi) and java mail () to send mail.
My only requirement is to send an alarm email when a system exception occurs. Therefore, the code is very simple without attachments:

 

The code is as follows:

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Public static void sendMail (String receiverAddress, String subject, String message)  { MultiPartEmail email = new MultiPartEmail (); Try { // Smtp server: Email. setHostName ("smtp.163.com "); // Charset Email. setCharset ("UTF-8 "); // Explorer's address Email. addTo (receiverAddress ); // Sender's email Email. setFrom ("*** @ 163.com "); // Account password Email. setAuthentication ("***","***"); // Subject Email. setSubject (subject ); // Information Email. setMsg (message ); // Send Email. send (); } Catch (EmailException e ){ E. printStackTrace ();         }  }

Method 2

The code is as follows:

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Package mail; Import java. util. Date; Import java. util. Properties; Import javax. mail. Address; Import javax. mail. Authenticator; Import javax. mail. Message; Import javax. mail. PasswordAuthentication; Import javax. mail. Session; Import javax. mail. Transport; Import javax. mail. internet. InternetAddress; Import javax. mail. internet. MimeMessage; /***//** * Send a common email, send an email with an attachment to a common email, and receive an html-based email from an email with an attachment, the following is a summary of emails with images sent in html format. */ Public class Test { // Email server Private String host = "smtp.163.com "; // This is your email user name Private String username = "******"; // Your email password Private String password = "******";     Private String mail_head_name = "this is head of this mail "; Private String mail_head_value = "this is head of this mail "; Private String mail_to = "zdw@live.cn "; Private String mail_from = "***** @ 163.com "; Private String mail_subject = "this is the subject of this test mail "; Private String mail_body = "this is the mail_body of this test mail "; Private String personalName = "My emails "; Public Test ()     {     } /***//** * This code is used to send a common email. */ Public void send () throws Exception     { Try         { Properties props = new Properties (); // Obtain the system environment Authenticator auth = new Email_Autherticator (); // Authenticator Props. put ("mail. smtp. host", host ); Props. put ("mail. smtp. auth", "true "); Session session = Session. getDefaultInstance (props, auth ); // Set the session to communicate with the email server. MimeMessage message = new MimeMessage (session ); // Message. setContent ("foobar," application/x-foobar "); // you can specify the Mail format. Message. setSubject (mail_subject); // you can specify a subject. Message. setText (mail_body); // you can specify the mail body. Message. setHeader (mail_head_name, mail_head_value); // you can specify the Mail title. Message. setSentDate (new Date (); // you can specify the Mail sending Date. Address address = new InternetAddress (mail_from, personalName ); Message. setFrom (address); // you can specify the sender's address. Address toAddress = new InternetAddress (mail_to); // you can specify the email receiver Address. Message. addRecipient (Message. RecipientType. TO, toAddress ); Transport. send (message); // send an email System. out. println ("send OK! "); } Catch (Exception ex)         { Ex. printStackTrace (); Throw new Exception (ex. getMessage ());         }     } /***//** * Used for server-to-user authentication */ Public class Email_Autherticator extends Authenticator     { Public Email_Autherticator ()         { Super ();         } Public Email_Autherticator (String user, String pwd)         { Super (); Username = user; Password = pwd;         } Public PasswordAuthentication getPasswordAuthentication ()         { Return new PasswordAuthentication (username, password );         }     } Public static void main (String [] args)     { Test sendmail = new Test (); Try         { Sendmail. send (); } Catch (Exception ex)         {         }     } }

Attached

The code is as follows:

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Package com. li72.email; Import java. util. Date; Import java. util. Properties; Import javax. activation. DataHandler; Import javax. activation. DataSource; Import javax. activation. FileDataSource; Import javax. mail. Authenticator; Import javax. mail. Message; Import javax. mail. PasswordAuthentication; Import javax. mail. Session; Import javax. mail. Transport; Import javax. mail. Message. RecipientType; Import javax. mail. internet. InternetAddress; Import javax. mail. internet. MimeBodyPart; Import javax. mail. internet. MimeMessage; Import javax. mail. internet. MimeMultipart; Public class AnthoerSimpleEmail { @ SuppressWarnings ("deprecation ") Public static void main (String [] args) throws Exception { Properties props = new Properties (); Props. setProperty ("mail. smtp. auth", "true"); // A common client is required. Props. setProperty ("mail. transport. protocol", "smtp"); // you must select a protocol. Props. setProperty ("mail. host", "smtp.163.com "); Session session = Session. getDefaultInstance (props, new Authenticator (){ @ Override Protected PasswordAuthentication getPasswordAuthentication (){ // TODO Auto-generated method stub Return new PasswordAuthentication ("sender email", "password "); } }); Session. setDebug (true ); Message msg = new MimeMessage (session ); MimeMultipart mimeMultipart = new MimeMultipart (); MimeBodyPart mimeBodyPart = new MimeBodyPart (); MimeBodyPart. setText ("hello "); MimeBodyPart attach1 = new MimeBodyPart (); MimeMultipart. addBodyPart (mimeBodyPart ); DataSource ds1 = new FileDataSource ("F: \ level 6 .txt "); DataHandler dh1 = new DataHandler (ds1 ); Attach1.setDataHandler (dh1 ); Attach1.setFileName ("reg.txt "); MimeMultipart. addBodyPart (attach1 ); Msg. setContent (mimeMultipart ); Msg. saveChanges (); Msg. setFrom (new InternetAddress ("sender ")); Date d = new Date (); Msg. setSubject ("" + d. getDate ()); Msg. setRecipient (RecipientType. TO, new InternetAddress ("recipient ")); Transport. send (msg ); } }