package util;

import java.util.Properties;

import javax.mail.Message;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import com.sun.mail.util.MailSSLSocketFactory;

/**

 * JavaMail发送邮件: java版本-与web无关

 * 前提是QQ邮箱里帐号设置要开启POP3/SMTP协议

 *

 *

 */

public class Mail_java {

    public static void main(String[] args) throws Exception {

        Properties prop = new Properties();

        // 开启debug调试，以便在控制台查看

        prop.setProperty("mail.debug", "true");

        // 设置邮件服务器主机名

        prop.setProperty("mail.host", "smtp.qq.com");

        // 发送服务器需要身份验证

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

        // 发送邮件协议名称

        prop.setProperty("mail.transport.protocol", "smtp");

        // 开启SSL加密，否则会失败

        MailSSLSocketFactory sf = new MailSSLSocketFactory();

        sf.setTrustAllHosts(true);

        prop.put("mail.smtp.ssl.enable", "true");

        prop.put("mail.smtp.ssl.socketFactory", sf);

        // 创建session

        Session session = Session.getInstance(prop);

        // 通过session得到transport对象

        Transport ts = session.getTransport();

        // 连接邮件服务器：邮箱类型，帐号，POP3/SMTP协议授权码 163使用：smtp.163.com

        ts.connect("smtp.qq.com", "发送方的QQ号", "POP3/SMTP协议授权码");

        // 创建邮件

        Message message = createSimpleMail(session);

        // 发送邮件

        ts.sendMessage(message, message.getAllRecipients());

        ts.close();

    }

    /**

     * @Method: createSimpleMail

     * @Description: 创建一封只包含文本的邮件

     */

    public static MimeMessage createSimpleMail(Session session) throws Exception {

            //  获取6为随机验证码

            String[] letters = new String[] {

                    "q","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m",

                    "A","W","E","R","T","Y","U","I","O","P","A","S","D","F","G","H","J","K","L","Z","X","C","V","B","N","M",

                    "0","1","2","3","4","5","6","7","8","9"};

            String stringBuilder ="";

            for (int i = 0; i < 6; i++) {

                stringBuilder = stringBuilder + letters[(int)Math.floor(Math.random()*letters.length)];

            }

        // 创建邮件对象

        MimeMessage message = new MimeMessage(session);

        // 指明邮件的发件人

        message.setFrom(new InternetAddress("发送方QQ@qq.com"));

        // 指明邮件的收件人，发件人和收件人如果是一样的，那就是自己给自己发

        message.setRecipient(Message.RecipientType.TO, new InternetAddress("接受方QQ@qq.com"));

        // 邮件的标题

        message.setSubject("JavaMail测试");

        // 邮件的文本内容

        message.setContent("欢迎您注册【OG高玩会】,账号注册验证码为(一分钟有效):"+stringBuilder+",请勿回复此邮箱", "text/html;charset=UTF-8");

        // 返回创建好的邮件对象

        return message;

    }

}