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;
    }
}