public class MailTool {	/**	 * 	 * @param mailHost  发件邮箱的主机地址	 * @param fromEmail 发件邮箱账号	 * @param password  发件邮箱的密码或者授权码	 * @param toEmail   收件邮箱	 * @param subject   邮件标题	 * @param builder   邮件正文	 */	public static void sendEmailToQQ(String mailHost,String fromEmail,String password,String toEmail,String subject,StringBuilder builder) throws MessagingException, GeneralSecurityException{			Properties props = new Properties();	        // 开启debug调试 （调试结束可以把true改为false，控制台就不会打印进度了）	        props.setProperty("mail.debug", "true");	        // 发送服务器需要身份验证	        props.setProperty("mail.smtp.auth", "true");	        // 设置邮件服务器主机名	        props.setProperty("mail.host", mailHost);	        // 发送邮件协议名称	        props.setProperty("mail.transport.protocol", "smtp");	        //开启 SSL 加密	        MailSSLSocketFactory sf = new MailSSLSocketFactory();	        sf.setTrustAllHosts(true);	        props.put("mail.smtp.ssl.enable", "true");	        props.put("mail.smtp.ssl.socketFactory", sf);                // 创建session	        Session session = Session.getInstance(props);                // 创建邮件	        Message msg = new MimeMessage(session);                //设置邮件的标题	        msg.setSubject(subject);	        //将传进来的StringBuilder转成text	        msg.setText(builder.toString());                //设置发件邮箱	        msg.setFrom(new InternetAddress(fromEmail));                //通过session得到transport对象	        Transport transport = session.getTransport();                //通过transport对象链接发件邮箱	        transport.connect(mailHost, fromEmail, password);                //通过transport对象发送邮件	        transport.sendMessage(msg, new Address[] { new InternetAddress(toEmail) });                //关闭流	        transport.close();	}  }