Java implements simple email sending

In the new project, the function of automatically sending data collection results to the specified mailbox is required. Because Java is not very familiar with it, a simple email sending function is provided after some online searches and references, take it as a java entry-level study. For preliminary verification, emails can be sent normally.
After the code is added, because the selected JDK version (jdk-7u5-windows-i586) is installed and the accompanying JRE library does not contain mail. jar, the program runs wrong. After the mail. jar file is downloaded, click Add External JARs under project --> properties --> java Build Path in eclipse to specify the storage Path.
[Java]
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;
 
 
Public class mail_test
{
// Mail server
Private String host = "smtp.126.com ";
// Mail account
Private String username = "xxxxxxx ";
// Password
Private String password = "xxxxxxx ";

Private String mail_head_name = "Head of test mail ";
 
Private String mail_head_value = "Head of test mail ";
 
Private String mail_to = www.2cto.com;
 
Private String mail_from = "www.2cto.com ";
 
Private String mail_subject = "subject of test mail ";
 
Private String mail_body = "content of test mail ";
 
Private String personalName = "test_mail! ";
 
Public mail_test ()
{
}
 

Public void send () throws Exception
{
Try
{
Properties props = new Properties (); // obtain the system environment
Authenticator auth = new Email_Autherticator (); // Authentication
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. setSubject (mail_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 over! ");
} 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)
{
Mail_test sendmail = new mail_test ();
Try
{
Sendmail. send ();
} Catch (Exception ex)
{
}
}
 
}
After the program is compiled and run, the "send over" command is displayed in the eclipse console! Indicates that the test email has been sent successfully.
Author: saloon_yuan