java发送邮箱及邮箱格式判断，一分钟发送时间限定

实现创建一个html

    
    



    邮箱：    发送邮件


验证码：

创建一个邮箱发送的类

package email1;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;


public class EmailDemo {
    public void fromEmail(String code,String email){
        //先登入QQ邮箱服务器

        //创建会话前设置参数
        Properties properties = new Properties();
        //设置key-vaule
        properties.setProperty("mail.host","smtp.qq.com");

        properties.setProperty("mail.smtp.auth", "true");

        //发送邮件采用的协议
        properties.setProperty("mail.transport.protocol","smtp");
        //会话
        Session session = Session.getDefaultInstance(properties);

        Transport ts =null;
        try {
            // 获取传输对象 发送邮件
            ts = session.getTransport();
            // 发送邮件前，校验账号密码(授权码)
            ts.connect("发送人邮箱","pop3协议授权码");

            //构建一封邮件
            MimeMessage message = new MimeMessage(session);

            //发件人
            message.setFrom(new InternetAddress("发件人邮箱"));
            //收件人
//            Message.RecipientType.TO 收件人
//            Message.RecipientType.CC 抄送
//            Message.RecipientType.BCC 暗送
            message.setRecipient(Message.RecipientType.TO, new InternetAddress(email));
//            message.setRecipient(Message.RecipientType.CC, new InternetAddress("2175902747@qq.com"));

            //主题
            message.setSubject("账号注册验证码");

            //正文
            message.setContent("您好，来自三峰博客您的六位验证码是："+code+"，请不要告诉别人30分钟有效！","text/html;charset=utf-8");

            //保存邮件
            message.saveChanges();

            //发送邮件
            ts.sendMessage(message, message.getAllRecipients());

        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            try {
                ts.connect();
            } catch (MessagingException e) {
                e.printStackTrace();
            }
        }
    }
}

创建一个controller，让前端可以调用邮件发送类

    @RequestMapping("/code")
    @ResponseBody
    public String code(HttpSession session,String email){
        int i = (int) (r.nextDouble()*1000000);
        String code = i>100000? i+"" :i+100000 +"";
        session.setAttribute("code",code);
        EmailDemo emailDemo = new EmailDemo();
        System.out.println(email+"==="+code);
//        emailDemo.fromEmail(code,email);
        return "发送成功！";
    }