mailhelper.java

石志国著《JSP应用教程》

import javax.mail.*;
import javax.mail.internet.*;
import java.util.Properties;
import java.util.Date;
public final class MailHelper {
	public static void sendMsg(
		String strHost,
		int nPort,
		String strUserName,
		String strPassWord,
		String strFrom,
		String strToList,
		String strCCList,
		String strBCCList,
		String strSubject,
		String strMessage)
		throws Exception {
		// create some properties and get the default Session
		Properties props = new Properties();
		props.put("mail.smtp.host", strHost);
		props.put("mail.smtp.auth", "true");
		Session session = Session.getDefaultInstance(props, null);
		session.setDebug(true);
		//create a message
		Message msg = new MimeMessage(session);
		//from
		InternetAddress from = new InternetAddress(strFrom);
		msg.setFrom(from);
		//to
		if (strToList != null && strToList.length() > 0) {
			InternetAddress[] to = { new InternetAddress(strToList)};
			msg.setRecipients(Message.RecipientType.TO, to);
		} else {
			throw new Exception("No Recipient");		
		}
		//cc
		if (strCCList != null && strCCList.length() > 0) {
			InternetAddress[] cc = { new InternetAddress(strCCList)};
			msg.setRecipients(Message.RecipientType.CC, cc);
		}
		//bcc
		if (strBCCList != null && strBCCList.length() > 0) {
			InternetAddress[] bcc = { new InternetAddress(strBCCList)};
			msg.setRecipients(Message.RecipientType.BCC, bcc);
		}
		//subject
		if (strSubject != null) {
			msg.setSubject(strSubject);
		}
		//sent date
		msg.setSentDate(new Date());
		//message
		if (strMessage != null && strMessage.trim().length() > 0) {
			msg.setText(strMessage);
		} else
			msg.setText("No message to be sent!");
		msg.saveChanges();
		//send the message
		int nMailPort = -1;
		if (nPort > 0)
			nMailPort = nPort;
		Transport transport = session.getTransport("smtp");
		transport.connect(strHost, nMailPort, strUserName, strPassWord);
		transport.sendMessage(msg, msg.getAllRecipients());
		transport.close();
	}
	public static void main(String[] args) {
		try {
			MailHelper.sendMsg(
				"smtp.163.net",
				0,
				"shizhiguo",
				"szg(8271)",
				"[e-mail]",
				"[e-mail]",
				"",
				"",
				"Hello World!",
				"This is a test!");
		} catch (AuthenticationFailedException ae) {
			ae.printStackTrace();
		} catch (SendFailedException sf) {
			Address[] invalid = sf.getInvalidAddresses();
			Address[] valid = sf.getValidSentAddresses();
			Address[] unsend = sf.getValidUnsentAddresses();
			sf.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}