java mail 注册邮箱的实现

核心代码：

package cn.itcast.shop.utils;

import java.util.Date;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Message.RecipientType;
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;

/**
 * 邮件发送工具类
 * 
 * @author admin
 *
 */
public class MailUtils {
	// --------------参数---------------------
	public static final String FROM = "[email protected]";// 发件人的email
	public static final String PWD = "*******";// 发件人密码--邮箱smtp授权码
	public static final String URL = "http://192.168.32.1:8080/shop";// 项目主页
	public static final String TITLE = "*********";
	public static final String HOST = "smtp.163.com";
	public static final String SMTP = "smtp";

	/**
	 * 发送邮件方法
	 * 
	 * @param to:收件人邮箱
	 * @param code:激活码
	 */
	public static void sendMail(String to, String code) {
		/**
		 * 1.获得一个session对象 2.创建一个代表邮件的对象Message 3.创建发送邮件Transport
		 */
		//发送邮件内容
		String context = "<h1>官方激活邮件，点击下面链接完成激活操作！</h1><h3><a href='" + URL + "/user_active.action?code="
				+ code + "'>" + URL + "/user_active.action?code=" + code + "</a></h3>";
		// 1.获得连接对象Session
		Properties props = new Properties();
		// 设置发送主机属性
		props.setProperty("mail.host", HOST);//存储发送邮件服务器的信息
		props.setProperty("mail.smtp.auth", "true");//同时通过验证
		Session session = Session.getInstance(props);//根据属性新建一个邮件会话
		// 2.创建邮件对象Message
		Message message = new MimeMessage(session);
		// 设置发件人：
		try {
			message.setFrom(new InternetAddress(FROM));//设置发件人的地址
			// 设置收件人：//抄送 CC 密送BCC
			message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
			// 设置标题
			message.setSubject(TITLE);
			// 设置邮件正文(正文内容，格式)
			message.setContent(context, "text/html;charset=UTF-8");
			//设置发信时间
			message.setSentDate(new Date());
			//存储邮件信息
			message.saveChanges();
			// 3.发送邮件
			Transport transport = session.getTransport(SMTP);
			transport.connect(FROM,PWD);
			transport.sendMessage(message,message.getAllRecipients());//发送邮件，第二个参数是所有已经设好的收件人地址
			transport.close();
		} catch (AddressException e) {
			e.printStackTrace();
		} catch (MessagingException e) {
			e.printStackTrace();
		}

	}

	public static void main(String[] args) {
		sendMail("******@qq.com", "4545467454664");
		System.out.println("发送邮件！");
	}
}