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package Send_Email;
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import Base.Email_settings;
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import javax.mail.*;
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import javax.mail.internet.InternetAddress;
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import javax.mail.internet.MimeMessage;
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import java.util.Properties;
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import java.util.regex.Pattern;
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public class Send_email {
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public static String judge_email_address(String email) {
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if (email == null || email.trim().isEmpty()) {
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return "邮箱不能为空";
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}
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// 去除前后空格
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email = email.trim();
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// 检查长度
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if (email.length() > 254) { // RFC标准规定邮箱最大长度
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return "邮箱地址过长";
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}
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// 检查是否包含@
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if (!email.contains("@")) {
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return "邮箱格式错误：缺少@符号";
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}
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// 分割本地部分和域名部分
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String[] parts = email.split("@");
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if (parts.length != 2) {
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return "邮箱格式错误：只能有一个@符号";
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}
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String localPart = parts[0];
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String domainPart = parts[1];
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// 验证本地部分
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if (localPart.isEmpty()) {
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return "邮箱格式错误：@前必须有内容";
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}
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if (localPart.length() > 64) {
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return "邮箱格式错误：@前内容过长";
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}
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// 验证域名部分
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if (domainPart.isEmpty()) {
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return "邮箱格式错误：@后必须有内容";
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}
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if (!domainPart.contains(".")) {
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return "邮箱格式错误：域名不完整";
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}
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// 验证顶级域名
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String[] domainParts = domainPart.split("\\.");
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String topLevelDomain = domainParts[domainParts.length - 1];
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if (topLevelDomain.length() < 2) {
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return "邮箱格式错误：顶级域名太短";
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}
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String emailRegex = "^(?=.{1,64}@)[A-Za-z0-9_-]+(\\.[A-Za-z0-9_-]+)*@"
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+ "[^-][A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[A-Za-z]{2,})$";
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boolean matches = Pattern.matches(emailRegex, email);
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return matches ? "邮箱格式正确" : "邮箱格式错误";
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}
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public static boolean send_email(String toEmail, String Code) {
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try {
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Properties props = new Properties();
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props.put("mail.smtp.host", Email_settings.SMTP_HOST);
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props.put("mail.smtp.port", Email_settings.SMTP_PORT);
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props.put("mail.smtp.auth", "true");
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if (Email_settings.SSL_ENABLE) {
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props.put("mail.smtp.starttls.enable", "true");
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props.put("mail.smtp.ssl.trust", Email_settings.SMTP_HOST);
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}
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// 创建会话
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Session session = Session.getInstance(props, new Authenticator() {
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@Override
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protected PasswordAuthentication getPasswordAuthentication() {
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return new PasswordAuthentication(Email_settings.FROM_EMAIL, Email_settings.EMAIL_PASSWORD);
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}
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});
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// 创建邮件消息
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Message message = new MimeMessage(session);
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message.setFrom(new InternetAddress(Email_settings.FROM_EMAIL));
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message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail));
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message.setSubject("注册验证码");
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// 邮件内容
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String content = String.format(
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"尊敬的用户：<b>%s</b><br/><br/>" +
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"您的注册验证码是：<b>%s</b><br/><br/>" +
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"验证码有效期为5分钟，请尽快完成注册。<br/><br/>" +
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"如果不是您本人操作，请忽略此邮件。",
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toEmail,Code
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);
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message.setContent(content, "text/html;charset=UTF-8");
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// 发送邮件
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Transport.send(message);
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return true;
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} catch (Exception e) {
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return false;
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}
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}
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}
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