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[email protected]

             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[email protected]

        message.setFrom(new InternetAddress("[email protected]"));

        //指明邮件的收件人

        message.setRecipient(Message.RecipientType.TO, new InternetAddress("[email protected]"));

        //发给多个人

//        message.setRecipients(Message.RecipientType.TO, new InternetAddress[]{new InternetAddress("[email protected]"),new InternetAddress("[email protected]")});

        //抄送

//        message.setRecipient(Message.RecipientType.CC, new InternetAddress("[email protected]"));

        //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);

    }

}