java mail 简单示例

package testEmail;

import java.util.*;
import javax.mail.internet.*;
import javax.mail.*;
public class JavaMail163 {
static class MailAuthenticator extends javax.mail.Authenticator {
String authenName;
String authenPass;
public MailAuthenticator(String authenName,String authenPass) {
super();
this.authenName=authenName;
this.authenPass=authenPass;
}

public javax.mail.PasswordAuthentication getPasswordAuthentication() {
return new javax.mail.PasswordAuthentication(authenName,authenPass);
}
}

public static void sendEmail(String context) throws AddressException,
MessagingException {
Properties mailpro = new Properties();

mailpro.put("mail.smtp.host", "smtp.somedomain.com");
//you can change the smtpAuth to false to test another condition
String smtpAuth="true";
mailpro.put("mail.smtp.auth", smtpAuth);

//you need change this to you email account and password in order to receive email;
Session session=null;
String sendAccount="youAccount";
String sendPassword="youPassword";
String receiveAccount="[e-mail]";


String recipSMTPHost="[e-mail]";
String sendSMTPHost="smtp.somedomain.com";
if (smtpAuth.equals("true")) {
MailAuthenticator myauth = new MailAuthenticator(sendAccount,sendPassword);
session = Session.getInstance(mailpro, myauth);
} else {
recipSMTPHost=recipSMTPHost.substring(recipSMTPHost.indexOf('@')+1);
sendSMTPHost=sendSMTPHost.substring(5);
if(!(recipSMTPHost.equals(sendSMTPHost))){
throw new MessagingException("Since you choose not carry SMTP authentication,you can not send to a email count whose SMTP host is different from you!");
}
session = Session.getInstance(mailpro);
}
session.setDebug(true);
MimeMessage msg = new MimeMessage(session);
InternetAddress from=new InternetAddress("[e-mail]");
String s=from.toString();
s=s.substring(s.indexOf('@')+1);
System.out.println(s);
msg.setFrom(from);
msg.setRecipient(Message.RecipientType.TO,
new InternetAddress(receiveAccount));
msg.setSubject("测试发送邮件！！！");
msg.setText(context);
Transport.send(msg);
}
public static void main(String [] args) throws AddressException, MessagingException{
sendEmail("hello world!");
}
}