<dependency>
            <groupId> org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-javamail_1.4_spec </artifactId>
            <version>1.3</version>
        </dependency>
        <dependency>
          <groupId>org.apache.commons</groupId>
          <artifactId>commons-email</artifactId>
          <version>1.2</version>
        </dependency>

public void sendMail(){
            try{
                Properties props=new Properties();
                props.put("mail.smtp.host", host);
                props.put("mail.smtp.auth", "true");
                Session mailSession = Session.getInstance(props);

                //设置session,和邮件服务器进行通讯。
                mailSession.setDebug(true);
                MimeMessage message = new MimeMessage(mailSession);
                message.setSubject(mail_subject); // 设置邮件主题
                message.setText(mail_body); // 设置邮件正文
                message.setHeader(mail_head_name, mail_head_value); // 设置邮件标题

                message.setSentDate(new Date()); // 设置邮件发送日期
                InternetAddress address = new InternetAddress(mail_from, personalName);
                message.setFrom(address); // 设置邮件发送者的地址
                InternetAddress toAddress = new InternetAddress(mail_to); // 设置邮件接收方的地址
                message.addRecipient(Message.RecipientType.TO, toAddress);
                Transport transport = null;
                transport = mailSession.getTransport("smtp");

                message.saveChanges();
                transport.connect(host, username, password);
                transport.sendMessage(message, message.getAllRecipients());
                transport.close();

                System.out.println("send success!");
            }catch (Exception ex){
                ex.printStackTrace();
            }
        }