public void sendMail(){
        try{
            Properties props=new Properties();
            props.put("mail.smtp.host","0.0.0.0");//存储发送邮件服务器的信息
            props.put("mail.smtp.auth","false");//同时通过验证
            Session s=Session.getInstance(props);
            s.setDebug(true);

            MimeMessage message=new MimeMessage(s);


            message.setFrom(from);
            message.setRecipients(Message.RecipientType.TO, addresses);
            message.setRecipients(Message.RecipientType.CC, addressescc);
            message.setSubject(title);//设置主题
            message.setContent(content,type);//设置信件内容
            message.setSentDate(new Date());//设置发信时间
            
//            发送邮件
            message.saveChanges();
            Transport transport=s.getTransport("smtp");
            transport.connect("0.0.0.0","","");
            transport.sendMessage(message,message.getAllRecipients());
//            已设好的收件人地址
            transport.close();        
        }catch(Exception e){
            e.printStackTrace();
        }
    }