Java Mail - failed to connect, no password specified

若發生無法連線

javax.mail.AuthenticationFailedException: failed to connect, no password specified?
at javax.mail.Service.connect(Service.java:329)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at javax.mail.Transport.send0(Transport.java:194)
at javax.mail.Transport.send(Transport.java:124)
at com.pic.framework.util.RainbowMailTest.main(RainbowMailTest.java:72)


則需加入下述properties
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.starttls.enable", "true");
properties.setProperty("mail.smtp.auth", "true");

Session session = Session.getInstance(properties, new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(userName, password);
}
});