Gmail API:在一封邮件中发送文本和HTML [英] Gmail API: send text and HTML in one mail

问题描述

发送文本或HTML的邮件都可以很好地工作，但是当我在单个邮件中同时发送两者时，HTML都带有一个名为"noname.html"的附件，其中包含HTML.

Mail sending either text or HTML works perfectly fine, but when I send them both in single mail, HTML comes as an attachment named "noname.html", which contains HTML.

我已经阅读了与此主题相关的其他问题，但找不到可能出问题的地方.

I have read other related questions on this topic, but couldn't find what is possibly wrong.

MIME-Version: 1.0
From: [e-mail]
To: [e-mail]
Subject: test
Content-type: multipart/mixed; boundary="012boundary"

--012boundary
Content-type: text/plain; charset="UTF-8"

Hello plain text!

--012boundary
Content-type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<b>Hello html</b>
--012boundary--`

推荐答案

您要使用gmail API发送HTML正文和文本正文.如果我的理解是正确的，那么该修改如何?

You want to send both HTML body and text body using gmail API. If my understanding is correct, how about this modification?

Content-type: multipart/mixed; boundary="012boundary"

收件人:

Content-type: multipart/alternative; boundary="012boundary"

注意:

• 使用multipart/alternative，可以同时发送Content-type: text/plain; charset="UTF-8"和Content-type: text/html; charset="UTF-8"的两个部分.

Note :

• Using multipart/alternative, both parts of Content-type: text/plain; charset="UTF-8" and Content-type: text/html; charset="UTF-8" can be sent.
• https://en.wikipedia.org/wiki/MIME#Content-Type

在我的环境中，我可以确认已将您的请求正文修改为multipart/alternative.如果这在您的环境中不起作用，对不起.

In my environment, I could confirm that your request body which was modified to multipart/alternative worked. If this didn't work on your environment, I'm sorry.

为了将文本正文，HTML正文和HTML的附件文件作为一封电子邮件发送，可以如下创建请求正文的结构.

In order to send a text body, a HTML body and an attachment file of HTML as one email, the structure of request body can be created as follows.

• 多份/混合
  • 多部分/替代
    • 文本/纯文本
    • text/html
    • multipart/mixed
      • multipart/alternative
        • text/plain
        • text/html

        MIME-Version: 1.0
        From: [e-mail]
        To: [e-mail]
        Subject: test
        Content-Type: multipart/mixed; boundary=012boundary01
        
        --012boundary01
        Content-Type: multipart/alternative; boundary=012boundary02
        
        --012boundary02
        Content-type: text/plain; charset=UTF-8
        
        Hello plain text!
        
        --012boundary02
        Content-type: text/html; charset=UTF-8
        Content-Transfer-Encoding: quoted-printable
        
        <b>Hello html</b>
        
        --012boundary02--
        --012boundary01
        Content-type: text/html; charset=UTF-8
        Content-Disposition: attachment; filename="sample.html"
        Content-Transfer-Encoding: quoted-printable
        
        <b>HTML sample attachment file</b>
        --012boundary01--
        

        参考文献:

        • https://www.w3.org/Protocols/rfc1341/7_2_Multipart.html
        • http://qcode.co.uk/post/70

        References :

        • https://www.w3.org/Protocols/rfc1341/7_2_Multipart.html
        • http://qcode.co.uk/post/70

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