mail.smtp.starttls.enable = true

package com.zhyea.zytools; import java.util.Date;import java.util.Properties; import javax.mail.Message;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage; public class MailSender {   private static final String MAIL_SMTP_HOST = "smtp.exmail.qq.com";  private static final Integer MAIL_SMTP_PORT = 587;  private static final Boolean MAIL_SMTP_AUTH = true;  private static final String MAIL_SMTP_USER = "robin@zhyea.com";  private static final String MAIL_SMTP_PASSWORD = "robinzhyea";   private static Properties props = new Properties();   static {    props.put("mail.smtp.host", MAIL_SMTP_HOST);    props.put("mail.smtp.auth", MAIL_SMTP_AUTH);    props.put("mail.smtp.user", MAIL_SMTP_USER);    props.put("mail.smtp.password", MAIL_SMTP_PASSWORD);    props.put("mail.smtp.starttls.enable", true);  }    /**   * 發送郵件   */  public static void send(String to, String title, String content) {    try {      Session session = Session.getInstance(props);//創建郵件會話      MimeMessage message = new MimeMessage(session);//由郵件會話新建一個消息對象       message.setFrom(new InternetAddress(MAIL_SMTP_PASSWORD));//設置發件人的地址      message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));//設置收件人,并設置其接收類型為TO      //設置信件內容      //message.setText(mailContent); //發送 純文本 郵件 TODO      message.setSubject(title);//設置標題      message.setContent(content, "text/html;charset=gbk"); //發送HTML郵件，內容樣式比較豐富      message.setSentDate(new Date());//設置發信時間      message.saveChanges();//存儲郵件信息       //發送郵件      Transport transport = session.getTransport("smtp");      transport.connect(MAIL_SMTP_USER, MAIL_SMTP_PASSWORD);      transport.sendMessage(message, message.getAllRecipients());//發送郵件,其中第二個參數是所有已設好的收件人地址      transport.close();    } catch (Exception e) {      e.printStackTrace();    }  }  }