Gmail 发送邮件

发送邮件代码

 1 public static void sendMailByGmail(String subject, String text, String... toEmail) throws Exception{
 2         final String host = "smtp.gmail.com";//邮件服务器
 3         final String from = "[email protected]";//发件人的邮箱
 4         final String pass = "*******";//发件人密码
 5         final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
 6 
 7         // Get a Properties object
 8         Properties props = System.getProperties();
 9         props.setProperty("mail.smtp.host", host);
10         props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
11         props.setProperty("mail.smtp.socketFactory.fallback", "false");
12         props.setProperty("mail.smtp.localhost", "127.0.0.1");
13         props.setProperty("mail.smtp.port", "465");
14         props.setProperty("mail.smtp.socketFactory.port", "465");
15         props.put("mail.smtp.auth", "true");
16 
17         Session session = Session.getDefaultInstance(props, null);
18         MimeMessage message = new MimeMessage(session);
19         message.setFrom(new InternetAddress(from));
20 
21         InternetAddress[] toAddress = new InternetAddress[toEmail.length];
22 
23         // 批量发送邮件
24         for( int i=0; i < toEmail.length; i++ ) { 
25             toAddress[i] = new InternetAddress(toEmail[i]);
26         }
27         System.out.println(Message.RecipientType.TO);
28 　　　　　
29         for( int i=0; i < toAddress.length; i++) { 
30             message.addRecipient(Message.RecipientType.TO, toAddress[i]);
31         }
32         message.setSubject(subject);
33         message.setText(text);
34         Transport transport = session.getTransport("smtp");
35         transport.connect(host, from, pass);
36         transport.sendMessage(message, message.getAllRecipients());
37         transport.close();
38     }

//遇到的问题

 该问题就是在国内无法连接，要使用国外的服务器

使用国外的服务器之后，还会报错

javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted

就要进行下图的设置

然后还有服务器的端口开放