[email protected]
[email protected]
emailName=username
emailPassword=userpass

package com.email;

import java.io.InputStream;
import java.util.Date;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;



/**
 * 簡單的郵件傳送
 * 
 * @author Administrator
 * 
 */
public class EmailUtils {

	public static void main(String[] args) throws Exception {
		Properties prop = new Properties();
		InputStream in = EmailUtils.class.getResourceAsStream("config.properties");
		prop.load(in);
		EmailUtils.sendMail(prop.getProperty("fromEmail"), prop.getProperty("toEmail"), prop.getProperty("emailName"), prop.getProperty("emailPassword"), "１１１１１１１１", "１１１１１１１");
	}
	/**
	 * 傳送郵件　(暫時只支援163郵箱傳送)
	 * @param fromEmail　傳送郵箱
	 * @param toEmail　接收郵箱
	 * @param emailName　163郵箱登入名
	 * @param emailPassword　密碼
	 * @param title　傳送主題
	 * @param centent　傳送內容
	 * @throws Exception
	 */
	public static void sendMail(String fromEmail,String toEmail,String emailName,String emailPassword,String title, String centent) throws Exception {
		
		Properties properties = new Properties();// 建立Properties物件
		properties.setProperty("mail.transport.protocol", "smtp");// 設定傳輸協議
		properties.put("mail.smtp.host", "smtp.163.com");// 設定發信郵箱的smtp地址
		properties.setProperty("mail.smtp.auth", "true"); // 驗證
		Authenticator auth = new AjavaAuthenticator(emailName,
				emailPassword); // 使用驗證，建立一個Authenticator
		Session session = Session.getDefaultInstance(properties, auth);// 根據Properties，Authenticator建立Session
		Message message = new MimeMessage(session);// Message儲存傳送的電子郵件資訊
		message.setFrom(new InternetAddress(fromEmail));
		message.setRecipient(Message.RecipientType.TO, new InternetAddress(
				toEmail));// 設定收信郵箱
		// 指定郵箱內容及ContentType和編碼方式
		message.setContent(centent, "text/html;charset=utf-8");
		message.setSubject(title);// 設定主題
		message.setSentDate(new Date());// 設定發信時間
		Transport.send(message);// 傳送

		System.out.println("傳送成功");
	}
}

// 建立傳入身份驗證資訊的 Authenticator類
class AjavaAuthenticator extends Authenticator {
	private String user;
	private String pwd;

	public AjavaAuthenticator(String user, String pwd) {
		this.user = user;
		this.pwd = pwd;
	}

	@Override
	protected PasswordAuthentication getPasswordAuthentication() {
		return new PasswordAuthentication(user, pwd);
	}
}