JAVA中发送邮件

1.导入需要资源JAR包

<!-- 导入操作邮件的jar -->
<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.5.0-b01</version>
</dependency>

　2.获取邮箱的授权码,邮箱客户端，在设置中可以获得

　　我使用网易邮箱，登录网易邮箱后在设置中的 POP3/SMTP/IMAP 选项中找到授权密码管理，如下图

3.编写代码如下

public class MailAuthenticator extends Authenticator {
    //发件者邮箱
    public static String USERNAME= "15514769010@163.com";
    //邮箱授权码
    public static String PASSWORD= "这里是邮箱的授权码";

    public MailAuthenticator(){}

    @Override
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(USERNAME, PASSWORD);
    }
}

public class MailOperation {

    /**
     *
     * @param user          发件人邮箱
     * @param password      password授权码
     * @param host          host
     * @param from          发件人
     * @param to            接收者邮箱
     * @param subject       邮件主题
     * @param content       邮件内容
     * @return              success发送成功， failure 发送失败
     * @throws Exception
     */
    public String sendMail(String user, String password, String host, String from, String to, String subject, String content) throws Exception {
        if (to != null){
            Properties props = System.getProperties();
            props.put("mail.smtp.host", host);
            props.put("mail.smtp.auth", "true");
            MailAuthenticator auth = new MailAuthenticator();
            MailAuthenticator.USERNAME = user;
            MailAuthenticator.PASSWORD = password;
            Session session = Session.getInstance(props, auth);
            session.setDebug(true);
            try {
                MimeMessage message = new MimeMessage(session);
                message.setFrom(new InternetAddress(from));
                if (!to.trim().equals("")){
                    message.addRecipient(Message.RecipientType.TO,new InternetAddress(to.trim()));
                }
                message.setSubject(subject);
                // 正文
                MimeBodyPart mbp1 = new MimeBodyPart();
                mbp1.setContent(content, "text/html;charset=utf-8");
                // 整个邮件：正文+附件
                Multipart mp = new MimeMultipart();
                mp.addBodyPart(mbp1);
                message.setContent(mp);
                message.setSentDate(new Date());
                message.saveChanges();
                Transport trans = session.getTransport("smtp");
                Transport.send(message);
                System.out.println(message.toString());
            } catch (Exception e){
                e.printStackTrace();
                return "failure";
            }
            return "success";
        }else{
            return "failure";
        }
    }

测试代码

 public static void main(String[] args) {
        MailOperation operation = new MailOperation();
        String user = "15514769010@163.com";
        String password = "这里是拿到的邮箱授权码";
        String host = "smtp.163.com";
        String from = "15514769010@163.com";
        //收件人
        String to = "1164300741@qq.com";
        String subject = "这里是邮件的主题";
        //邮箱内容
        StringBuffer sb = new StringBuffer();
        String yzm = RandomUtil.getRandomString(6);
        sb.append("<!DOCTYPE>"+"<div bgcolor='#f1fcfa'   style='border:1px solid #d9f4ee; font-size:14px; line-height:22px; color:#005aa0;padding-left:1px;padding-top:5px;   padding-bottom:5px;'><span style='font-weight:bold;'>温馨提示：</span>"
                + "<div style='width:950px;font-family:arial;'>欢迎使用*******，您的注册码为：<br/><h2 style='color:green'>"+yzm+"</h2><br/>本邮件由系统自动发出，请勿回复。<br/>感谢您的使用。<br/>xxx电子商务有限公司</div>"
                +"</div>");
        try {
            String res = operation.sendMail(user, password, host, from, to,
                    subject, sb.toString());
            System.out.println(res);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

如有错误，请指正！联系wx 15514769010

JAVA中发送邮件

推荐阅读