java mail 发送邮件 线程

public static void main(String args[]) {

        MailThread mail = new MailThread();
        mail.setTargetAddress("QQ号@qq.com");
        mail.setSubject("测试邮件发送");
        mail.setContent("测试邮件发送的content");
        mail.start();
    }

public class MailThread extends Thread{

    private String senderAddress = "QQ号@qq.com";
    private String targetAddress = "QQ号@qq.com";
    private String subject = "标题";
    private String content = "内容";


    @Override
    public void run() {
        Properties prop = new Properties();
        prop.setProperty("mail.host", "smtp.qq.com");
        prop.setProperty("mail.transport.protocol", "smtp");
        prop.setProperty("mail.smtp.auth", "true");
        //使用JavaMail发送邮件的5个步骤
        try{
            //1、创建session
            Session session = Session.getInstance(prop);
            //开启Session的debug模式，这样就可以查看到程序发送Email的运行状态
            session.setDebug(true);
            //2、通过session得到transport对象
            Transport ts = session.getTransport();
            //3、使用邮箱的用户名和密码连上邮件服务器，发送邮件时，发件人需要提交邮箱的用户名和密码给smtp服务器，用户名和密码都通过验证之后才能够正常发送邮件给收件人。
            ts.connect("smtp.qq.com", "QQ号", "授权码"); // qq的密码需要开启授权码，把授权码放到这里就行
            //4、创建邮件
            Message message = createSimpleMail(session);
            //5、发送邮件
            ts.sendMessage(message, message.getAllRecipients());
            ts.close();
        }catch (Exception e){
            e.printStackTrace();
        }
    }
    public  MimeMessage createSimpleMail(Session session)
            throws Exception {
        //创建邮件对象
        MimeMessage message = new MimeMessage(session);
        //指明邮件的发件人
        message.setFrom(new InternetAddress(senderAddress));
        //指明邮件的收件人，现在发件人和收件人是一样的，那就是自己给自己发
        message.setRecipient(Message.RecipientType.TO, new InternetAddress(targetAddress));
        //邮件的标题
        message.setSubject(subject);
        //邮件的文本内容
        message.setContent(content, "text/html;charset=UTF-8");
        //返回创建好的邮件对象
        return message;
    }

    public String getSenderAddress() {
        return senderAddress;
    }

    public void setSenderAddress(String senderAddress) {
        this.senderAddress = senderAddress;
    }

    public String getTargetAddress() {
        return targetAddress;
    }

    public void setTargetAddress(String targetAddress) {
        this.targetAddress = targetAddress;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
}