googleapi:错误400:必需的收件人地址，invalidArgument [英] googleapi: Error 400: Recipient address required, invalidArgument

问题描述

我正在运行以下脚本来发送电子邮件.发件人和收件人替换了发件人和收件人地址.

I am running following script to send email message. The From and To addresses are replaced by sender and receiver.

func SendMail() {

b, err := ioutil.ReadFile("credentials.json")
if err != nil {
    log.Fatalf("Unable to read client secret file: %v", err)
}

config, err := google.ConfigFromJSON(b, gmail.MailGoogleComScope)
if err != nil {
    log.Fatalf("Unable to parse client secret file to config: %v", 
err)
}
client := getClient(config)

srv, err := gmail.New(client)
if err != nil {
    log.Fatalf("Unable to retrieve Gmail client: %v", err)
}

user := "me"
mailtext := `From: [e-mail]
To: [e-mail]
Subject: Saying Hello
Date: Thu, 8 Oct 2020 09:55:06 -0600
Message-ID: <[e-mail]>

This is a message just to say hello.
So, "Hello".
`
raw := base64.URLEncoding.EncodeToString([]byte(mailtext))

var message gmail.Message
message.Id = "Msg 2"
message.LabelIds = []string{"SENT"}
message.Raw = raw

doFunc := srv.Users.Messages.Send(user, &message)
m, err := doFunc.Do()
if err != nil {
    println(err.Error())
    println("Message not sent")
} else {
    fmt.Printf("%+v", m)
}

该脚本报告以下错误:

googleapi: Error 400: Recipient address required, invalidArgument

环境:macOS Catalina 10.15.7 go1.15.2 darwin/amd64

Environment: macOS Catalina 10.15.7 go1.15.2 darwin/amd64

感谢帮助！

推荐答案

我相信您的目标如下.

• 您想使用googleapis发送电子邮件给golang.
• 您已经能够使用Gmail API收发电子邮件.

• 在您的脚本中，我认为需要修改mailtext.在这种情况下，换行和空格很重要.
• 尽管创建了raw，但并未将其放入请求正文中.

• In your script, I think that mailtext is required to be modified. In this case, the line break and spaces are important.
• Although raw is created, that is not put to the request body.

当以上几点反映到您的脚本中时，它如下所示.

When above points are reflected to your script, it becomes as follows.

    mailtext := `
    From: [e-mail]
    To: [e-mail]
    Subject: Saying Hello
    Date: Thu, 8 Oct 2020 09:55:06 -0600
    Message-ID: <[e-mail]>

    This is a message just to say hello.
    So, "Hello".
    `
    raw :=  base64.URLEncoding.EncodeToString([]byte(mailtext))

     // create gmail.Message

     var message gmail.Message
     message.Id = "Msg 1"
     message.LabelIds = []string{"SENT"}

到:

    user := "me"
    // Modified
    mailtext := `From: [e-mail]
To: [e-mail]
Subject: Saying Hello
Date: Thu, 8 Oct 2020 09:55:06 -0600
Message-ID: <[e-mail]>

This is a message just to say hello.
So, "Hello".`
    raw := base64.URLEncoding.EncodeToString([]byte(mailtext))

    // create gmail.Message

    var message gmail.Message
    message.Id = "Msg 1"
    message.LabelIds = []string{"SENT"}
    message.Raw = raw  // Added

• 我认为在这种情况下，Date:和Message-ID:可能会替换为新值.

  • I think that in this case, Date: and Message-ID: might be replaced with new values.

    或者，请按如下所示修改mailtext.

    Or, please modify mailtext as follows.

      mailtext := "From: [e-mail]\nTo: [e-mail]\nSubject: Saying Hello\nDate: Thu, 8 Oct 2020 09:55:06 -0600\nMessage-ID: <[e-mail]>\n\nThis is a message just to say hello.\nSo, \"Hello\"."
    

  • 方法:users.messages.send

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