Java邮件发送

ps：感谢狂神老哥

依赖

      javax.mail
      mail
      1.4.7
    
    
      javax.activation
      activation
      1.1.1
    

邮件发送

package com.chen;

import com.sun.mail.util.MailSSLSocketFactory;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.util.Properties;

//发送一封简单邮件
public class MailDemo01 {
    public static void main(String[] args) throws Exception {
        Properties properties = new Properties();
        properties.setProperty("mail.host","smtp.qq.com");  //设置qq邮件服务器
        properties.setProperty("mail.transport.protocol","smtp");//设置邮件发宋协议
        properties.setProperty("mail.smtp.auth","true");//需要验证用户名密码

        //qq邮箱的话还需要设置ssl加密，下面代码
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        properties.put("mail.smtp.ssl.enable","true");
        properties.put("mail.smtp.ssl.socketFactory",sf);

        //javamail发送邮件的五个步骤
        //1.创建定义整个应用程序所需要的环境信息的session对象
        //qq才有的，
        Session session = Session.getDefaultInstance(properties, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("******@qq.com","授权码");//发件人邮箱名和授权码
            }
        });
        //开启session的debug模式，可以查看程序发送email的运行状态
        session.setDebug(true);

        //2.通过session得到transport对象
        Transport transport = session.getTransport();
        //3.使用邮箱的用户名和授权码连接上邮件服务器
        transport.connect("smtp.qq.com","*******@qq.com","授权码");
        //4.创建邮件
        //带附件的，直至封装成方法
        MimeMessage mimeMessage = imageMail(session);
        

        

        



        //5.发送邮件
        transport.sendMessage(mimeMessage,mimeMessage.getAllRecipients());
        //6.关闭连接
        transport.close();
    }
    public static MimeMessage imageMail(Session session) throws MessagingException {

        //消息的固定信息
        MimeMessage mimeMessage = new MimeMessage(session);

        //邮件发送人
        mimeMessage.setFrom(new InternetAddress("*****@qq.com"));
        //邮件接收人，可以同时发送给很多人，我们这里只发给自己；
        mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress("*****@qq.com"));
        mimeMessage.setSubject("我也不知道是个什么东西就发给你了"); //邮件主题


        

        //图片
        MimeBodyPart body1 = new MimeBodyPart();
        body1.setDataHandler(new DataHandler(new FileDataSource("mail/src/1.png")));
        body1.setContentID("1.png"); //图片设置ID

        //文本
        MimeBodyPart body2 = new MimeBodyPart();
        body2.setContent("请注意，我不是广告","text/html;charset=utf-8");

        //附件
        MimeBodyPart body3 = new MimeBodyPart();
        body3.setDataHandler(new DataHandler(new FileDataSource("mail/src/1.png")));
        body3.setFileName("1.png"); //附件设置名字

        MimeBodyPart body4 = new MimeBodyPart();
        body4.setDataHandler(new DataHandler(new FileDataSource("mail/src/1.png")));
        body4.setFileName(""); //附件设置名字

        //拼装邮件正文内容
        MimeMultipart multipart1 = new MimeMultipart();
        multipart1.addBodyPart(body1);
        multipart1.addBodyPart(body2);
        multipart1.setSubType("related"); //1.文本和图片内嵌成功！

        //new MimeBodyPart().setContent(multipart1); //将拼装好的正文内容设置为主体
        MimeBodyPart contentText =  new MimeBodyPart();
        contentText.setContent(multipart1);

        //拼接附件
        MimeMultipart allFile =new MimeMultipart();
        allFile.addBodyPart(body3); //附件
        allFile.addBodyPart(body4); //附件
        allFile.addBodyPart(contentText);//正文
        allFile.setSubType("mixed"); //正文和附件都存在邮件中，所有类型设置为mixed；


        //放到Message消息中
        mimeMessage.setContent(allFile);
        mimeMessage.saveChanges();//保存修改


        return mimeMessage;

    }
}