Golang如何开发基础的通知提醒系统

type Notification struct {
    Title   string
    Content string
    To      string // 邮箱、手机号等接收目标
}
<p>type Notifier interface {
Send(n Notification) error
}</p>

import (
    "fmt"
    "net/smtp"
)
<p>type EmailNotifier struct {
Auth smtp.Auth
Addr string
From string
}</p><p>func NewEmailNotifier(host, port, user, password string) *EmailNotifier {
auth := smtp.PlainAuth("", user, password, host)
addr := fmt.Sprintf("%s:%s", host, port)
return &EmailNotifier{
Auth: auth,
Addr: addr,
From: user,
}
}</p><p>func (e *EmailNotifier) Send(n Notification) error {
msg := fmt.Sprintf("To: %s\r\nSubject: %s\r\n\r\n%s", n.To, n.Title, n.Content)
return smtp.SendMail(e.Addr, e.Auth, e.From, []string{n.To}, []byte(msg))
}</p>

notifier := NewEmailNotifier("smtp.gmail.com", "587", "you@gmail.com", "password")
err := notifier.Send(Notification{
    Title:   "系统提醒",
    Content: "您的任务已超期。",
    To:      "user@example.com",
})
if err != nil {
    fmt.Println("发送失败:", err)
}
</font><H3>添加日志或控制台通知（用于调试）</H3><p>在开发阶段或作为备用通道，打印到控制台也很有用。</p>
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                <font color="#0066cc"><pre class="brush:php;toolbar:false;">
type ConsoleNotifier struct{}
<p>func (c *ConsoleNotifier) Send(n Notification) error {
fmt.Printf("[通知] 发送给 %s: %s - %s\n", n.To, n.Title, n.Content)
return nil
}</p>

func SendToAll(notifiers []Notifier, n Notification) {
    for _, notifier := range notifiers {
        _ = notifier.Send(n) // 忽略错误或记录日志
    }
}

func ScheduleReminder(intervalSec int, notifier Notifier, notification Notification) {
    ticker := time.NewTicker(time.Duration(intervalSec) * time.Second)
    go func() {
        for range ticker.C {
            notifier.Send(notification)
        }
    }()
}

ScheduleReminder(30, &ConsoleNotifier{}, Notification{
    Title:   "健康检查提醒",
    Content: "请检查服务状态。",
    To:      "admin",
})