javamail 利用qq邮箱做邮箱服务器，简单小demo

首先maven：

        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.1</version>
        </dependency>

用户名密码验证：

 public class MailAuthenticator extends Authenticator{

     //邮箱账号
     private String username;

     //邮箱密码
     private String password;

     public MailAuthenticator(String username,String password){
         this.username=username;
         this.password=password;
     }

     @Override
     protected PasswordAuthentication getPasswordAuthentication() {
         return new PasswordAuthentication(username, password);
     }

     public String getUsername() {
         return username;
     }
     public void setUsername(String username) {
         this.username = username;
     }
     public String getPassword() {
         return password;
     }
     public void setPassword(String password) {
         this.password = password;
     }
 }

 public class SimpleMailSender {
     private final transient Properties props = System.getProperties();
     private transient MailAuthenticator authenticator;
     private transient Session session;

     public SimpleMailSender(final String smtpHostName, final String username,
             final String password){
         try {
             init(username, password, smtpHostName);
         } catch (NoSuchProviderException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }
     public SimpleMailSender(final String username, final String password) throws NoSuchProviderException {
         //通过邮箱地址解析出smtp服务器，对大多数邮箱都管用
         final String smtpHostName = "smtp." + username.split("@")[1];
         init(username, password, smtpHostName);

         }
     private void init(String username, String password, String smtpHostName) throws NoSuchProviderException {
         // 初始化props
         props.put("mail.transport.protocol", "smtp");
         props.put("mail.smtp.auth", "true");
         //qq是smtp.qq.com
         props.put("mail.smtp.host", smtpHostName);
         //ssl邮箱端口
         props.put("mail.smtp.socketFactory.port", 465);//465
         //开启ssl
         props.put("mail.smtp.starttls.enable","true");
         // 验证
         authenticator = new MailAuthenticator(username, password);
         // 创建session
         session = Session.getInstance(props, authenticator);
         session.setDebug(true);
 //        Transport transport = session.getTransport();
 //        try {
 //            transport.connect("smtp.qq.com", 25, "530486639@qq.com", "llg9004_d");
 //        } catch (MessagingException e) {
 //            // TODO Auto-generated catch block
 //            e.printStackTrace();
 //        }
     }
     public void send(String recipient, String subject, Object content)
             throws AddressException, MessagingException {
         // 创建mime类型邮件
         final MimeMessage message = new MimeMessage(session);
         // 设置发信人
         message.setFrom(new InternetAddress(authenticator.getUsername()));
         // 设置收件人
         message.setRecipient(RecipientType.TO, new InternetAddress(recipient));
         // 设置主题
         message.setSubject(subject);
         // 设置邮件内容
         System.out.println();
         message.setContent(content.toString(), "text/html;charset=utf-8");
         // 发送
         Transport.send(message);
         }
 //    public void send(String recipient, SimpleMail mail)
 //            throws AddressException, MessagingException {
 //        send(recipient, mail.getSubject(), mail.getContent());
 //        }

     /**
      * 1.重点现在客户端掉http端口25，腾讯好像不让掉了，必须https调用
      * 2.腾讯使用这种方式连接的话，需要重新申请独立密码，不是qq邮箱的密码，还需开启pop/smtp功能
      * 3.用腾讯的邮局发邮件好像有限制，发送过多，好像直接给你连接断开了
      * 4.如果需要做发邮件的功能的话，最好自己搭建邮局
      * @param args
      * @throws AddressException
      * @throws MessagingException
      */
     public static void main(String[] args) throws AddressException, MessagingException {
         SimpleMailSender sms= new SimpleMailSender("10000@qq.com",
                 "dfvasdasdasd");
         //发送过多的话会断开连接
 //        for(int i=0;i<100;i++){
             sms.send("11111@qq.com", "hello", "hello");
 //            System.out.println("#######:"+i);
 //        }
     }
 }