GoLang语言:邮件群发器

好久没有更新博客了,这次又带来了一段GO语言的代码(没办法,只会写代码了)。

Go语言邮件群发器 main.go

// Multi-SendEmail project main.go
package main
import (
  "bufio"
  "errors"
  "fmt"
  "io"
  "io/ioutil"
  "net/smtp"
  "os"
  "strings"
  "time"
)
func SendMail(user, password, host, to, subject, body, mailtype string) error {
  hp := strings.Split(host, ":")
  auth := smtp.PlainAuth("", user, password, hp[0])
  var content_type string
  if mailtype == "html" {
    content_type = "Content-Type: text/html;charset=UTF-8"
  } else {
    content_type = "Content-Type: text/plain;charset=UTF-8"
  }
  msg := []byte("To: " + to + "\r\nFrom: " + user + "<" + user + ">\r\nSubject: " + subject + "\r\n" + content_type + "\r\n\r\n" + body)
  send_to := strings.Split(to, ";")
  err := smtp.SendMail(host, auth, user, send_to, msg)
  return err
}
func readLine2Array(filename string) ([]string, error) {
  result := make([]string, 0)
  file, err := os.Open(filename)
  if err != nil {
    return result, errors.New("Open file failed.")
  }
  defer file.Close()
  bf := bufio.NewReader(file)
  for {
    line, isPrefix, err1 := bf.ReadLine()
    if err1 != nil {
      if err1 != io.EOF {
        return result, errors.New("ReadLine no finish")
      }
      break
    }
    if isPrefix {
      return result, errors.New("Line is too long")
    }
    str := string(line)
    result = append(result, str)
  }
  return result, nil
}
func main() {
  fmt.Println("start...")
  user := "邮箱@qq.com"
  password := "密码"
  host := "smtp.qq.com:25"  //QQ为例
  subject := "邮件标题"
  sendTo, err := readLine2Array("send.txt")
  if err != nil {
    fmt.Println(err)
    return
  }
  content, err := ioutil.ReadFile("email.txt")
  if err != nil {
    fmt.Println(err)
    return
  }
  body := string(content)
  for i := 0; i < len(sendTo); i++ {
    to := sendTo[i]
    fmt.Println("Send email to " + to)
    err = SendMail(user, password, host, to, subject, body, "html")
    if err != nil {
      fmt.Println("send mail error!")
      fmt.Println(err)
      i--
      time.Sleep(600 * time.Second)
    } else {
      fmt.Println("send mail success!")
    }
  }
}

使用说明:

编译出exe文件,把要发送的邮箱一行一个放入send.txt中,邮件内容放入email.txt中(HTML格式),运行。

这代码我也有在用,有很多不灵活的地方,仅供参考。

============================================

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本文来自:开源中国博客

感谢作者:一曲忧伤

查看原文:GoLang语言:邮件群发器

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