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;
}

}

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);
}

}