Gomail.v2 - 来自 Slice 的多个收件人

Question

免责声明:我在这个帖子中看到了类似的问题: Golang multiple recipients with gomail.v2但无法让它发挥作用，并且还没有果汁在那里发表评论寻求帮助。该问题中的操作使用 os.Args[]，而我想使用存储在配置文件中的 slice 。

我正在尝试使用很棒的 gomail.v2 包发送到包含在 slice ToMail 中的多个收件人列表，例如 e 结构 Email 通过我的方法 Mail。

编译器在第 37 行报错:

./mailer.go:37: not enough arguments in call to m.SetAddressHeader
        have (string, []string...)
        want (string, string, string)

我如何正确地将 slice 中的每个收件人传递给 SetAddressHeader("To"... 方法，以便发送给 slice ToMail 中的所有收件人？

我尝试过的:

package main

import (
        "fmt"
        "gopkg.in/gomail.v2"
)

type Email struct {
        FromMail, FromFirstLast, Password, Subject, Body, Server string
        ToMail []string
        Port int
}

func main() {
        e := Email{FromMail: "fromuser@foo.com",
                FromFirstLast: "From User",
                ToMail: []string{"user1@foo.com", "user2@foo.com"},
                Password: "passpasspass",
                Subject: "Test",
                Body:"TEST BODY",
                Server: "foo.foomail.com",
                Port: 587,}
        err := e.Mail()
        if err != nil {
                fmt.Println(err)
        }
}

func (e Email)Mail() (error) {
    m := gomail.NewMessage()
    m.SetAddressHeader("From", e.FromMail, e.FromFirstLast)
    addresses := make([]string, len(e.ToMail))

    for i, _ := range addresses{
        addresses[i] = m.FormatAddress(e.ToMail[i], "")
    }
    m.SetAddressHeader("To", addresses...)
    m.SetHeader("Subject", e.Subject)
    m.SetBody("text/plain", e.Body)

    d := gomail.NewPlainDialer(e.Server, e.Port, e.FromMail, e.Password)
    if err := d.DialAndSend(m); err != nil {
        return err
    }
        return nil
}

Answer 1

package gomail

import "gopkg.in/gomail.v2"

func (*Message) SetAddressHeader

func (m *Message) SetAddressHeader(field, address, name string)

SetAddressHeader sets an address to the given header field.

func (*Message) SetHeader

func (m *Message) SetHeader(field string, value ...string)

SetHeader sets a value to the given header field.

您引用的示例和文档有多个地址:

addresses := make([]string, len(e.ToMail))
for i := range addresses {
    addresses[i] = m.FormatAddress(e.ToMail[i], "")
}
m.SetHeader("To", addresses...)

但是您使用单个地址(使用隐式 FormatAddress)形式编写:

m.SetAddressHeader("To", addresses...)

错误:

not enough arguments in call to m.SetAddressHeader
        have (string, []string...)
        want (string, string, string)