1.需要的jar包

2.具體實現方法

1.設置郵箱主機、需要認證、郵箱協議

Properties pro=new Properties();

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

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

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

2.設置校驗器

Authenticator auth=new Authenticator() {

@Override

protected PasswordAuthentication getPasswordAuthentication() {

return new PasswordAuthentication("[email protected]","qzeagwfnyxvgjgff");

}

};

3.設置套接層，是為了保證協議以及運輸的安全可靠性

MailSSLSocketFactory sf=new MailSSLSocketFactory();

sf.setTrustAllHosts(true);

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

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

4.創建一封新郵件

//創建session

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

session.setDebug(true);

//創建一份郵件

MimeMessage mime=new MimeMessage(session);

//填寫發送人

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

//填寫接收人

mime.setRecipients(RecipientType.TO,"[email protected]");

//設置主題

mime.setSubject("hello");

//設置正文

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

Transport.send(mime);

System.out.println("發送成功");

Java發送帶附件郵件的方法

只需要在設置正文那裏註釋掉，然後改成：

//發送帶附件的郵件

MimeMultipart list =new MimeMultipart();

//創建body主體放置內容

MimeBodyPart b1=new MimeBodyPart();

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

//中文轉碼

b1.setFileName(MimeUtility.encodeText("蠟筆小新耍流氓.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("發送成功");

Java發送郵件的方法