Java 实现邮箱发送验证码——QQ邮箱为例

JAVA实现使用QQ邮箱发送验证码功能

 

 

QQ邮箱设置

1. 第一步 ，打开QQ邮箱(地址:https://mail.qq.com/)；

2. 第二步 ，登录后点击设置

3. 

4. 第三步，点击账户，下拉找到POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务
   打开Pop3/SMPT服务 ，获取邮箱授权码(需要手机验证)

5. 

6. 第五步，开启成功后会获得一个授权码，记录下来（代码中需要使用，这个授权码并不是一定的 )

7. 

导入依赖jar包

1. 分别是：activation.jar、commons-email-1.x.jar、mail.jar
   原创作者已经整合好了，地址：https://download.csdn.net/download/qq_43166448/10743081

发送邮件代码

随机生成六位验证码方法：

int verificationCode = (int) ((Math.random() * 9 + 1) * 100000);

public void sendMail(){
    String[] receivers = ["邮箱@163.com", "邮箱"@qq.com];
    List fileList = new ArrayList<>();
        if(receivers != null && receivers.size() > 0){
            try{
                Properties properties = new Properties();
                //企业邮箱使用：smtp.exmail.qq.com
                properties.put("mail.smtp.host", "smtp.qq.com");
                properties.put("mail.smtp.port", "25");
                properties.put("mail.smtp.auth", "true");
                Session session = Session.getInstance(properties);
                MimeMessage message = new MimeMessage(session);

                // 发件人
                message.setFrom(new InternetAddress("发件人邮箱@qq.com"));

                // 收件人(多个)
                InternetAddress[] sendTo = new InternetAddress[receivers.size()]
                for (int i = 0; i < receivers.size(); i++) {
                    sendTo[i] = new InternetAddress(receivers.get(i));
                }
                message.setRecipients(MimeMessage.RecipientType.TO, sendTo);

                // 邮件主题
//                message.setSubject("邮件主题")
                message.setSubject(title,"UTF-8")
                // 添加邮件的各个部分内容，包括文本内容和附件
                Multipart multipart = new MimeMultipart()

                // 添加邮件正文
                BodyPart contentPart = new MimeBodyPart()
                contentPart.setContent("邮件内容", "text/html;charset=UTF-8")
                multipart.addBodyPart(contentPart)

                // 遍历添加文件附件
                if (fileList != null && fileList.size() > 0) {
                    for (File file : fileList) {
                        BodyPart attachmentBodyPart = new MimeBodyPart()
                        DataSource source = new FileDataSource(file)
                        attachmentBodyPart.setDataHandler(new DataHandler(source))
                        attachmentBodyPart.setFileName(MimeUtility.encodeText(file.getName(), "UTF-8", "B"))
                        multipart.addBodyPart(attachmentBodyPart)
                    }
                }
                message.setContent(multipart)
                message.setSentDate(new Date())
                message.saveChanges()


                Transport transport = session.getTransport()
                //或者为企业邮箱和密码
                transport.connect("发件人邮箱@qq.com", "授权码")
                transport.sendMessage(message, message.getAllRecipients())
                transport.close()
            }catch (Exception e) {
                e.printStackTrace()
            }
        }