javaMail实现注册时邮箱验证码的发送

package mail;

import java.util.Properties;
import java.util.Random;

import javax.mail.Authenticator;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMessage.RecipientType;

import org.junit.Test;
/**
 * javamail第一例
 * @author 刘乃杰
 * 17.6.14
 *
 */

public class Demo02 {
    @Test
    public void fun1() throws AddressException, MessagingException{
        /**
         * 1.得到session
         */
        Properties props=new Properties();
        props.setProperty("mail.host","smtp.163.com");    //设置邮件服务器地址    /*不同邮箱：smtp:xxx.com*/
        props.setProperty("mail.smtp.auth","true");        //设置邮件服务器是否需要认证
        //创建认证器
        Authenticator auth=new Authenticator() {
                public PasswordAuthentication getPasswordAuthentication(){
                    return new PasswordAuthentication("xxx","xxx");
                    //指定用户名和密码
/*用户名不需加后缀   例：xxx@163.com    只需写xxx*/
                }
        };
        //获取session对象
        Session session=Session.getInstance(props,auth);
        
        /**
         * 2.创建mimemessage
         */
        MimeMessage msg=new MimeMessage(session);
        msg.setFrom(new InternetAddress("xxx"));        //设置发件人
        msg.addRecipient(RecipientType.TO,new InternetAddress("xxxx"));    //设置收件人
//        msg.addRecipient(RecipientType.CC,new InternetAddress("xxxx"));    //类型为抄送
//        msg.addRecipient(RecipientType.BCC,new InternetAddress("xxxx"));//类型为密送
        
        msg.setSubject("这是一封测试邮件");    //设置邮件的主题
        //指定内容，及内容的mime类型
        Random rand = new Random();
        int yzm = rand.nextInt(1000);
        msg.setContent("验证码为：["+yzm+"]","text/html;charset=utf-8");
        /**
         * 3.发邮件
         */
        Transport.send(msg);
    }
}