Java邮件客户端发送邮件＋附件

目前研究一下使用Java发送带有附件的邮件，从网上搜索了一下发现都存在各种各样的问题。在这里总结一下，展示一下基础代码，防止遗忘。

代码

public static boolean sendMail(String subject, String toMail,            String content, String... files) {        boolean isFlag = false;        try {            String smtpFromMail = "你的QQ号码@qq.com"; // 账号            String pwd = "QQ上面申请的授权码"; // 密码            int port = 465; // 端口            String host = "smtp.qq.com"; // 端口            Properties props = new Properties();            props.put("mail.smtp.host", host);            props.setProperty("mail.smtp.socketFactory.class",                    "javax.net.ssl.SSLSocketFactory");            props.put("mail.smtp.auth", "true");            Session session = Session.getDefaultInstance(props);            session.setDebug(false);            MimeMessage message = new MimeMessage(session);            try {                message.setFrom(new InternetAddress(smtpFromMail, "QQ邮件测试"));                message.addRecipient(Message.RecipientType.TO,                        new InternetAddress(toMail));                message.setSubject(subject);                message.addHeader("charset", "UTF-8");                /* 添加正文内容 */                Multipart multipart = new MimeMultipart();                BodyPart contentPart = new MimeBodyPart();                contentPart.setText(content);                contentPart.setHeader("Content-Type",                        "text/html; charset=UTF-8");                multipart.addBodyPart(contentPart);                /* 添加附件 */                for (String file : files) {                    File usFile = new File(file);                    MimeBodyPart fileBody = new MimeBodyPart();                    DataSource source = new FileDataSource(file);                    fileBody.setDataHandler(new DataHandler(source));                    sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();                    fileBody.setFileName("=?GBK?B?"                            + enc.encode(usFile.getName().getBytes()) + "?=");                    multipart.addBodyPart(fileBody);                }                message.setContent(multipart);                message.setSentDate(new Date());                message.saveChanges();                Transport transport = session.getTransport("smtp");                transport.connect(host, port, smtpFromMail, pwd);                transport.sendMessage(message, message.getAllRecipients());                transport.close();                isFlag = true;            } catch (Exception e) {                isFlag = false;                e.printStackTrace();            }        } catch (Exception e) {            e.printStackTrace();        }        return isFlag;    }    public static void main(String[] args) {        boolean res = Main.sendMail("这是一封测试邮件", "想要发送的邮件地址",                "朋友好久不见", "附件路径");        System.out.println("Resuylt: " + res);    }

注

1、使用Java客户端配置QQ邮箱发送邮件，需要现在QQ邮箱网页上申请授权码，发送邮件时放在密码的位置；
2、特别需要注意发送邮件的标题、正文内容的编码格式问题，不然容易造成乱码现象。