1.需要的jar包

2.具体实现方法

1.设置邮箱主机、需要认证、邮箱协议

Properties pro=new Properties();

pro.setProperty("mail.host", "smtp.qq.com");

pro.setProperty("mail.smtp.auth", "true");

pro.setProperty("mail.transport.protocol", "smtp");

2.设置校验器

Authenticator auth=new Authenticator() {

@Override

protected PasswordAuthentication getPasswordAuthentication() {

return  new PasswordAuthentication("1375219202@qq.com","qzeagwfnyxvgjgff");

}

};

3.设置套接层，是为了保证协议以及运输的安全可靠性

MailSSLSocketFactory sf=new MailSSLSocketFactory();

sf.setTrustAllHosts(true);

pro.put("mail.smtp.ssl.enable", "true");

pro.put("mail.smto.ssl.SocketFactory", sf);

4.创建一封新邮件

//创建session

Session session=Session.getInstance(pro,auth);

session.setDebug(true);

//创建一份邮件

MimeMessage mime=new MimeMessage(session);

//填写发送人

mime.setFrom(new InternetAddress("18597842600@163.com"));

//填写接收人

mime.setRecipients(RecipientType.TO,"554735957@qq.com");

//设置主题

mime.setSubject("hello");

//设置正文

mime.setContent("hello，你好！","text/html;charset=utf-8");

Transport.send(mime);

System.out.println("发送成功");

Java发送带附件邮件的方法

只需要在设置正文那里注释掉，然后改成：

//发送带附件的邮件

MimeMultipart list =new MimeMultipart();

//创建body主体放置内容

MimeBodyPart b1=new MimeBodyPart();

b1.attachFile(new File("C:\\Users\\Administrator\\Desktop\\7.jpg"));

//中文转码

b1.setFileName(MimeUtility.encodeText("蜡笔小新耍流氓.jpg"));

list.addBodyPart(b1);

MimeBodyPart b2=new MimeBodyPart();

b2.setContent("hello，你好！","text/html;charset=utf-8");

list.addBodyPart(b2);

mime.setContent(list);

Transport.send(mime);

System.out.println("发送成功");