直接上程式碼了 由於阿里雲禁用了25埠所以替換成465埠並修改協議為ssl才能傳送郵件

參考我的另一篇部落格

http://blog.csdn.net/u013412790/article/details/54912506

public class SendEmail {

    private static final Logger logger = LogManager.getLogger(SendEmail.class);

    private final static String smtpHost = "SMTP.qq.com";//配置Email session物件
    private
 
 final static String messageType = "text/html;charset=UTF-8";//相應內容型別，編碼型別
    private final static String subject = "Imax(民大二手平臺) 密碼修改";//主題
    private final static String fromEmail = "[email protected]";//傳送郵件的郵箱
    private final static String password = "thblmuldeba";//密碼

    @SuppressWarnings("static-access"
 
)
    public boolean sendMessage(String to, String id, String username) {
        try {
            final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";//SSL加密
            MailSSLSocketFactory sf = new MailSSLSocketFactory();
            sf.setTrustAllHosts(true);
            String messageText = appendString(id, username);
            //第一步：配置javax.mail.Session物件
 

            Properties props = new Properties();   // 建立Properties 類用於記錄郵箱的一些屬性

            props.put("mail.smtp.socketFactory.class", SSL_FACTORY);

            props.put("mail.smtp.host", smtpHost);  //此處填寫SMTP伺服器
            props.put("mail.smtp.starttls.enable", "true");//使用 STARTTLS安全連線
            props.put("mail.smtp.port", "465");             //google使用465或587埠
            props.put("mail.smtp.auth", "true");       // 表示SMTP傳送郵件，必須進行身份驗證
            props.put("mail.debug", "true");      //開啟除錯模式
            props.put("mail.transport.protocol", "SMTP");     // 傳送郵件協議名稱
            props.setProperty("mail.smtp.socketFactory.port", "465");
            Session mailSession = Session.getInstance(props, new MyAuthenticator(fromEmail, password));//此處填寫你的賬號和口令(16位口令)
            props.put("mail.smtp.ssl.socketFactory", sf);
            //第二步：編寫訊息
            InternetAddress fromAddress = new InternetAddress(fromEmail);// 設定發件人的郵箱
            InternetAddress toAddress = new InternetAddress(to); // 設定收件人的郵箱
            MimeMessage message = new MimeMessage(mailSession);
            message.setFrom(fromAddress);
            message.addRecipient(RecipientType.TO, toAddress);
            message.setSentDate(Calendar.getInstance().getTime());
            message.setSubject(subject);   // 設定郵件標題
            message.setContent(messageText, messageType);// 設定郵件的內容體

            // 第三步：傳送訊息
            Transport transport = mailSession.getTransport("smtp");
            transport.connect(smtpHost, fromEmail, password);
            transport.send(message, message.getRecipients(RecipientType.TO)); // 傳送郵件啦

            return true;
        } catch (MessagingException e) {
            e.printStackTrace();
            logger.error("郵件傳送錯誤" + e.getMessage());
            return false;
        } catch (Exception e) {
            logger.error("郵件傳送錯誤" + e.getMessage());
            return false;
        }
    }

    /**
     * @Author: Ming
     * @param: id  使用者id
     * @Description: 添加發送的簡訊的資訊
     * @Date: 17:12 2017/2/6
     */
    public static String appendString(String id, String username) {
        int i;
        String t = "&nbsp";
        String messageText = "";
        for (i = 0; i < 4; i++) messageText += t;
        messageText += "歡迎使用民大二手市場平臺~<br/>";
        for (i = 0; i < 12; i++) messageText += t;
        messageText += "請點選：http://112.74.169.239/user/" + username + "/activation/" + id;
        return messageText;
    }

}

class MyAuthenticator extends Authenticator {
private String userName=”“;
private String password=”“;

public MyAuthenticator(String userName,String password){
    this.userName=userName;
    this.password=password;
}
protected PasswordAuthentication getPasswordAuthentication(){
    return new PasswordAuthentication(userName, password);
}

}