javaMail（一）

Setup

If you use Java 2 Platform,
Enterprise Edition (J2EE) 1.3, you're in luck: it includes JavaMail, so
no additional setup is required. If, however, you're running Java 2
Platform, Standard Edition (J2SE) 1.1.7 and upwards, and you want email
capability for your applications, download and install the following:

• JavaMail
• JavaBeans Activation Framework

資料來源： http://www.javaworld.com/javaworld/jw-10-2001/jw-1026-javamail.html?

Sample

以下的範例，以gmail 為例

package com.mail;

import java.security.Security;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;


public class msgsendsample {

private static final String SMTP_HOST_NAME = "smtp.gmail.com";
private static final String SMTP_PORT = "465";
private static final String emailMsgTxt = "Test Message Contents";
private static final String emailSubjectTxt = "A test from gmail test.....";
private static final String emailFromAddress = "xxxx@gmail.com";
private static final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
private static final String[] sendTo = {"xxxx@gmail.com","xxxx@yahoo.com.tw"};

msgsendsample() {
}

public void sendMail() throws MessagingException {

Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

new msgsendsample().sendSSLMessage(sendTo, emailSubjectTxt,
emailMsgTxt, emailFromAddress);
System.out.println("Sucessfully Sent mail to All Users");

}

public void sendSSLMessage(String recipients[], String subject,
String message, String from) throws MessagingException {
boolean debug = true;

Properties props = new Properties();
props.put("mail.smtp.host", SMTP_HOST_NAME);
props.put("mail.smtp.auth", "true");
props.put("mail.debug", "true");
props.put("mail.smtp.port", SMTP_PORT);
props.put("mail.smtp.socketFactory.port", SMTP_PORT);
props.put("mail.smtp.socketFactory.class", SSL_FACTORY);
props.put("mail.smtp.socketFactory.fallback", "false");



Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {

protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("xxxx", "xxxx"); //Gmail的帳號及密碼
}
});


session.setDebug(debug); // 方便Debug用

Message msg = new MimeMessage(session);
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);

InternetAddress[] addressTo = new InternetAddress[recipients.length];
for (int i = 0; i < recipients.length; i++) {
addressTo[i] = new InternetAddress(recipients[i]);
}
msg.setRecipients(Message.RecipientType.TO, addressTo);

// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(message, "text/plain");
Transport.send(msg);
}

public static void main(String args[]) throws Exception {

msgsendsample ms = new msgsendsample();
ms.sendMail();
}


}

p.s 一開始我只下載了javamail 所以在run的過程當中會出現 java.lang.NoClassDefFoundError: javax/activation/DataSource ，後來下載 javaBean Activation Framework加到Lib之後就解決了