226 lines
6.2 KiB
Go
226 lines
6.2 KiB
Go
package service
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import (
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"crypto/tls"
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"fmt"
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"html/template"
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"log"
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"net"
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"net/smtp"
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"strings"
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)
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// SMTPConfig 邮件发送配置
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type SMTPConfig struct {
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Host string // SMTP服务器地址
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Port int // SMTP端口
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Username string // 发件人邮箱
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Password string // SMTP授权密码
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}
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// 默认腾讯企业邮配置(可根据实际情况修改)
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var DefaultSMTPConfig = SMTPConfig{
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Host: "smtp.qcloudmail.com",
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Port: 465,
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Username: "1@seersun.com",
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Password: "z1Tq6v45vXbYQGBrqOUE",
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}
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// VerificationCodeData 验证码邮件模板数据
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type VerificationCodeData struct {
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Code string // 验证码
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ValidMin int // 有效期(分钟)
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Platform string // 平台名称
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Hotline string // 客服热线
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}
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// 验证码邮件HTML模板
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const verificationCodeTemplate = `<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>验证码通知</title>
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<style>
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* { margin: 0; padding: 0; box-sizing: border-box; font-family: "Microsoft YaHei", Arial, sans-serif; }
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body { background: #f5f7fa; padding: 20px 0; }
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.email-container { max-width: 550px; margin: 0 auto; background: #fff; border-radius: 12px; box-shadow: 0 3px 15px rgba(0,0,0,0.05); overflow: hidden; }
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.email-header { background: linear-gradient(135deg, #667eea, #764ba2); padding: 28px; text-align: center; }
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.header-icon { width: 48px; height: 48px; margin: 0 auto 12px; background: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
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.icon-code { color: #667eea; font-size: 24px; font-weight: 700; }
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.header-title { color: #fff; font-size: 20px; font-weight: 600; }
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.email-content { padding: 30px 24px; text-align: center; }
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.content-desc { font-size: 15px; color: #666; line-height: 1.8; margin-bottom: 28px; }
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.code-box { display: inline-block; background: #f8f9fa; border-radius: 8px; padding: 16px 32px; margin-bottom: 28px; }
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.verify-code { font-size: 28px; color: #667eea; font-weight: 700; letter-spacing: 8px; }
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.warning-box { background: #fff8e1; border-radius: 8px; padding: 14px; margin: 0 20px 24px; }
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.warning-text { font-size: 13px; color: #e65100; line-height: 1.6; }
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.footer-note { font-size: 12px; color: #999; line-height: 1.5; }
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.email-footer { background: #f8f9fa; padding: 20px; text-align: center; font-size: 11px; color: #999; margin-top: 16px; }
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</style>
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</head>
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<body>
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<div class="email-container">
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<!-- 邮件头部 -->
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<div class="email-header">
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<div class="header-icon">
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<span class="icon-code">注册</span>
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</div>
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<div class="header-title">验证码通知</div>
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</div>
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<!-- 邮件内容 -->
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<div class="email-content">
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<p class="content-desc">尊敬的用户，您好！您正在进行身份验证操作，本次验证码如下：</p>
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<!-- 验证码展示框 -->
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<div class="code-box">
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<span class="verify-code">{{.Code}}</span>
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</div>
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<!-- 提醒框 -->
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<div class="warning-box">
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<p class="warning-text">⚠ 验证码有效期为{{.ValidMin}}分钟，请尽快完成验证。如非本人操作，请忽略此邮件。</p>
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</div>
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<p class="footer-note">为保障您的账号安全，请勿将验证码泄露给他人。</p>
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</div>
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<!-- 邮件底部 -->
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<div class="email-footer">
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<p>© 2025 {{.Platform}} 版权所有 | 官网：{{.Hotline}}</p>
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</div>
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</div>
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</body>
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</html>`
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// SendVerificationCode 发送验证码邮件
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// to: 收件人邮箱
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// code: 验证码
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// 返回错误信息
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func SendVerificationCode(to, code string) error {
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// 模板数据
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data := VerificationCodeData{
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Code: code,
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ValidMin: 10, // 有效期10分钟
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Platform: "骄阳号", // 可替换为实际平台名称
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Hotline: "seersun.com", // 可替换为实际客服热线
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}
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// 生成邮件内容
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body, err := renderTemplate(verificationCodeTemplate, data)
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if err != nil {
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return fmt.Errorf("渲染模板失败: %w", err)
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}
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// 发送邮件
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return sendMail(
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DefaultSMTPConfig,
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to,
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"验证码通知",
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body,
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)
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}
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// renderTemplate 渲染模板
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func renderTemplate(tplStr string, data interface{}) (string, error) {
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tpl, err := template.New("verification").Parse(tplStr)
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if err != nil {
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return "", err
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}
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buf := new(strings.Builder)
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if err := tpl.Execute(buf, data); err != nil {
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return "", err
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}
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return buf.String(), nil
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}
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// sendMail 发送邮件核心函数
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func sendMail(config SMTPConfig, to, subject, body string) error {
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// 构建邮件头部
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header := make(map[string]string)
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header["From"] = fmt.Sprintf("骄阳号 <%s>", config.Username)
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header["To"] = to
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header["Subject"] = subject
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header["Content-Type"] = "text/html; charset=UTF-8"
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// 拼接邮件内容
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message := ""
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for k, v := range header {
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message += fmt.Sprintf("%s: %s\r\n", k, v)
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}
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message += "\r\n" + body
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// 认证信息
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auth := smtp.PlainAuth(
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"",
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config.Username,
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config.Password,
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config.Host,
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)
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// 发送邮件
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addr := fmt.Sprintf("%s:%d", config.Host, config.Port)
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return SendMailWithTLS(addr, auth, config.Username, []string{to}, []byte(message))
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}
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// Dial 创建TLS连接的SMTP客户端
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func Dial(addr string) (*smtp.Client, error) {
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conn, err := tls.Dial("tcp", addr, nil)
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if err != nil {
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log.Println("tls.Dial Error:", err)
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return nil, err
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}
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host, _, _ := net.SplitHostPort(addr)
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return smtp.NewClient(conn, host)
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}
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// SendMailWithTLS 使用TLS发送邮件
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func SendMailWithTLS(addr string, auth smtp.Auth, from string,
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to []string, msg []byte) (err error) {
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c, err := Dial(addr)
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if err != nil {
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log.Println("创建SMTP客户端失败:", err)
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return err
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}
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defer c.Close()
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if auth != nil {
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if ok, _ := c.Extension("AUTH"); ok {
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if err = c.Auth(auth); err != nil {
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log.Println("认证失败:", err)
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return err
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}
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}
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}
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if err = c.Mail(from); err != nil {
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return err
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}
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for _, addr := range to {
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if err = c.Rcpt(addr); err != nil {
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return err
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}
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}
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w, err := c.Data()
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if err != nil {
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return err
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}
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_, err = w.Write(msg)
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if err != nil {
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return err
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}
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if err = w.Close(); err != nil {
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return err
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}
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return c.Quit()
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}
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// TestSendVerificationCode 测试发送验证码邮件
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func TestSendVerificationCode() error {
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// 测试发送验证码为123456的邮件
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return SendVerificationCode("3361562035@qq.com", "123456")
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}
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