javamail邮件发送demo code 全新时代

需要引用的javax.mail.*类，在javamail mailapi.jar中。

Properties props = System.getProperties();
props.setProperty("mail.smtp.host", "smtp.qq.com");
props.setProperty("mail.smtp.port", "25");
props.put("mail.smtp.auth", "true");

final String username = "xxx@qq.com";
        final String password = "xxx";
        Session session = Session.getDefaultInstance(props,
                new Authenticator()  {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(username, password);
                    }
                });

try {
            // -- Create a new message --
            Message msg = new MimeMessage(session);
            // -- Set the FROM and TO fields --
            msg.setFrom(new InternetAddress(username));
            msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse("xxx@qq.com",false));
            msg.setSubject("邮件标题");
            
            MimeMultipart mp=new MimeMultipart();
            BodyPart bp = new MimeBodyPart();
            String html = "邮件内容<h1>Hello World</h1>";
            bp.setContent("<meta http-equiv=Content-Type content=text/html; charset=gb2312>"   + html, "text/html;charset=UTF-8");
            mp.addBodyPart(bp);
            
            BodyPart bp1 = new MimeBodyPart();
            
            //附件
            FileDataSource fileds = new FileDataSource("C:/people.xml");
            bp1.setDataHandler(new DataHandler(fileds));
            bp1.setFileName(fileds.getName());
            mp.addBodyPart(bp1);
            
            msg.setSentDate(new Date());
            msg.setContent(mp);
            
            msg.saveChanges();
            Transport.send(msg);
            System.out.println("Message sent.");
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }