javaMail邮件发送的简单实现

package com.test.mail;

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;

public class Sendmail {

    /**
    * @param args
    * @throws Exception
    */
    public static void main(String[] args) throws Exception {
         try {
            Properties prop = new Properties();
             prop.setProperty("mail.host", "mail.creditharmony.cn");
             prop.setProperty("mail.transport.protocol", "smtp");
             prop.setProperty("mail.smtp.auth", "true");
             prop.setProperty("mail.smtp.starttls.enable", "true");
            //使用JavaMail发送邮件的5个步骤
             /**
              * 方式一：
              */
             /*
             //1、创建session
             Session session = Session.getDefaultInstance(prop, null);
            //开启Session的debug模式，这样就可以查看到程序发送Email的运行状态
            session.setDebug(true);
            //2、通过session得到transport对象
            Transport ts = session.getTransport();
            //3、使用邮箱的用户名和密码连上邮件服务器，发送邮件时，发件人需要提交邮箱的用户名和密码给smtp服务器，用户名和密码都通过验证之后才能够正常发送邮件给收件人。
            ts.connect("mail.creditharmony.cn", "PMS", "密码");

            //4、创建邮件
            Message message = createSimpleMail(session);
            //5、发送邮件
            ts.sendMessage(message, message.getAllRecipients());
            ts.close();
            */

            /**
             * 方式二：
             */

             //创建session,并进行账号身份验证 ，SimpleAuthenticator身份验证的工具类；注：SimpleAuthenticator实例化时user不带后缀，即PMS,而非PMS@creditharmony.cn
             Session session = Session.getInstance(prop, new SimpleAuthenticator("PMS", "密码"));
//             Session session = Session.getInstance(prop, new Authenticator(){
//                 protected PasswordAuthentication getPasswordAuthentication() {
//                     return new PasswordAuthentication("PMS", "密码");
//              }});

            //开启Session的debug模式，这样就可以查看到程序发送Email的运行状态
            session.setDebug(true);
            //4、创建邮件
            Message message = createSimpleMail(session);
            Transport.send(message);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static MimeMessage createSimpleMail(Session session)throws Exception {
        //创建邮件对象
        MimeMessage message = new MimeMessage(session);
        //指明邮件的发件人，发件人即是PMS@creditharmony.cn
        message.setFrom(new InternetAddress("PMS@creditharmony.cn"));
        //指明邮件的收件人
        message.setRecipient(Message.RecipientType.TO, new InternetAddress("yanhuiqu@creditharmony.cn"));
        //发给多个人
//        message.setRecipients(Message.RecipientType.TO, new InternetAddress[]{new InternetAddress("yanhuiqu@creditharmony.cn"),new InternetAddress("fanleisun@creditharmony.cn")});
        //抄送
//        message.setRecipient(Message.RecipientType.CC, new InternetAddress("yanhuiqu@creditharmony.cn"));
        //邮件的标题
         message.setSubject("只包含文本的简单邮件");
        //邮件的文本内容
        message.setContent("测试，你好啊！", "text/html;charset=UTF-8");
        //返回创建好的邮件对象
        return message;
    }

}

身份验证类：SimpleAuthenticator

package com.test.mail;

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

public class SimpleAuthenticator extends Authenticator  {
    private String user;
    private String pwd;  

    public SimpleAuthenticator(String user, String pwd) {
        this.user = user;
        this.pwd = pwd;
    }  

    @Override
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(user, pwd);
    }

}