简单Java 发送邮件实例代码

package mail;

import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

/** *//**
 * 发送普通邮件，接受普通邮件 发送带有附件的邮件，接收带有附件的邮件 发送html形式的邮件，接受html形式的邮件 发送带有图片的邮件等做了一个总结。
 */
public class Test
{
    // 邮箱服务器
    private String host = "smtp.163.com";
    // 这个是你的邮箱用户名
    private String username = "******";
    // 你的邮箱密码
    private String password = "******";
   
    private String mail_head_name = "this is head of this mail";

    private String mail_head_value = "this is head of this mail";

    private String mail_to = "zdw@live.cn";

    private String mail_from = "*****@163.com";

    private String mail_subject = "this is the subject of this test mail";

    private String mail_body = "this is the mail_body of this test mail";

    private String personalName = "我的邮件";

    public Test()
    {
    }

    /** *//**
     * 此段代码用来发送普通电子邮件
     */
    public void send() throws Exception
    {
        try
        {
            Properties props = new Properties(); // 获取系统环境
            Authenticator auth = new Email_Autherticator(); // 进行邮件服务器用户认证
            props.put("mail.smtp.host", host);
            props.put("mail.smtp.auth", "true");
            Session session = Session.getDefaultInstance(props, auth);
            // 设置session,和邮件服务器进行通讯。
            MimeMessage message = new MimeMessage(session);
            // message.setContent("foobar, "application/x-foobar"); // 设置邮件格式
            message.setSubject(mail_subject); // 设置邮件主题
            message.setText(mail_body); // 设置邮件正文
            message.setHeader(mail_head_name, mail_head_value); // 设置邮件标题
            message.setSentDate(new Date()); // 设置邮件发送日期
            Address address = new InternetAddress(mail_from, personalName);
            message.setFrom(address); // 设置邮件发送者的地址
            Address toAddress = new InternetAddress(mail_to); // 设置邮件接收方的地址
            message.addRecipient(Message.RecipientType.TO, toAddress);
            Transport.send(message); // 发送邮件
            System.out.println("send ok!");
        } catch (Exception ex)
        {
            ex.printStackTrace();
            throw new Exception(ex.getMessage());
        }
    }

    /** *//**
     * 用来进行服务器对用户的认证
     */
    public class Email_Autherticator extends Authenticator
    {
        public Email_Autherticator()
        {
            super();
        }

        public Email_Autherticator(String user, String pwd)
        {
            super();
            username = user;
            password = pwd;
        }

        public PasswordAuthentication getPasswordAuthentication()
        {
            return new PasswordAuthentication(username, password);
        }
    }

    public static void main(String[] args)
    {
        Test sendmail = new Test();
        try
        {
            sendmail.send();
        } catch (Exception ex)
        {
        }
    }

}

package com.li72.email;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class AnthoerSimpleEmail {
@SuppressWarnings("deprecation")
public static void main(String[] args) throws Exception {
Properties props=new Properties();
props.setProperty("mail.smtp.auth", "true");//必须 普通客户端
props.setProperty("mail.transport.protocol", "smtp");//必须选择协议
props.setProperty("mail.host", "smtp.163.com");
Session session=Session.getDefaultInstance(props, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
// TODO Auto-generated method stub
return new PasswordAuthentication("发件人邮箱","密码");
}
});
session.setDebug(true);
Message msg=new MimeMessage(session);
MimeMultipart mimeMultipart=new MimeMultipart();
MimeBodyPart mimeBodyPart=new MimeBodyPart();
mimeBodyPart.setText("hello");
MimeBodyPart attach1=new MimeBodyPart();
mimeMultipart.addBodyPart(mimeBodyPart);
DataSource ds1 = new FileDataSource("F:\六级.txt");
DataHandler dh1=new DataHandler(ds1);
attach1.setDataHandler(dh1);
attach1.setFileName("reg.txt");
mimeMultipart.addBodyPart(attach1);
msg.setContent(mimeMultipart);
msg.saveChanges();
msg.setFrom(new InternetAddress("发件人"));
Date d=new Date();
msg.setSubject(""+d.getDate());
msg.setRecipient(RecipientType.TO, new InternetAddress("收件人"));
Transport.send(msg);
}
}