JAVA实现使用QQ邮箱发送验证码功能
QQ邮箱设置
第一步，打开QQ邮箱(地址:/)；
第二步，登录后点击设置
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)
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 )
导入依赖jar包
分别是：activation.jar、commons-email-1.x.jar、mail.jar
原创作者已经整合好了，地址：/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@", "邮箱@"};List<File> fileList = new ArrayList<>();if(receivers != null && receivers.length > 0){try{Properties properties = new Properties();//企业邮箱使用：smtp.properties.put("mail.smtp.host", "");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@"));// 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@", "授权码")transport.sendMessage(message, message.getAllRecipients())transport.close()}catch (Exception e) {e.printStackTrace()}}
