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Java mail - javax.mail.NoSuchProviderException: Invalid protocol
hi,
i try to do a sending email program (testing version) by using java.mail but some error popup.
<<coding part>>>
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
public class SendMail
{
Transport smtp_service;
public SendMail() throws Exception
{
Properties props = System.getProperties();
Session ss = Session.getDefaultInstance(props,null);
System.out.println("pass #1");
try
{
smtp_service = ss.getTransport();
}
catch (MessagingException nspe)
{
System.err.println("ERROR..No SMTP mail provider! \n"+nspe);
}
System.out.println("pass #2");
MimeMessage message = new MimeMessage(ss);
InternetAddress sender = new InternetAddress("kktang@yahoo.com","kokking");
message.setFrom(sender);
System.out.println("pass #2.5");
InternetAddress[] to_list = {new InternetAddress("kk.tang@pdx.com.my")};
message.setRecipients(Message.RecipientType.TO,to_list);
message.setSubject("Testing Emailing");
message.setHeader("keyword","HEHEE");
message.setText("Hello world...");
message.saveChanges();
System.out.println("pass #2.9");
smtp_service.send(message);
System.out.println("pass #3");
}
public static void main(String[] args)
{
try
{
SendMail xx = new SendMail();
System.out.println("Msg Send");
}
catch (Exception ee)
{
System.out.println("main error started");
System.err.println("ERROR AT MAIN\n" + ee);
System.out.println("main error terminated");
System.exit(1);
}
System.exit(0);
}
}
<<error msg popup>>>
pass #1
ERROR..No SMTP mail provider!
javax.mail.NoSuchProviderException: Invalid protocol: null
pass #2
pass #2.5
pass #2.9
main error started
main error terminated
ERROR AT MAIN
javax.mail.SendFailedException: Sending failed;
nested exception is:
javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;
nested exception is:
java.net.ConnectException: Connection refused: connect
please help... Thanks
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Java mail - javax.mail.NoSuchProviderException: Invalid protocol
You should specify exchange server IP address.
Check do you have Mail provider server running on your machine?
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