使用邮件包时，“短语中缺少单词：不支持字符集”

我正在尝试解析电子邮件，但使用邮件包时出现此类错误。这是邮件包裹上的错误还是我应该自己处理的问题？

missing word in phrase: charset not supported: "gb18030"

charset not supported: "koi8-r" missing word in phrase: charset not supported: "ks_c_5601-1987"

我该如何修复它们？我想我应该使用charset但我不知道如何 。电子邮件标题如下所示

Received: from smtpbg303.qq.com ([184.105.206.26]) by mx-ha.gmx.net
 (mxgmxus001) with ESMTPS (Nemesis) id 0MAOx2-1X2yNC2ZFC-00BaVU for
 <[email protected]>; Sat, 14 Jun 2014 18:11:48 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201307;
    t=1402762305; bh=imEvSr8IPsqWTXU63xUHRv+wuQG+Tcz2mPP9ai4rrE4=;
    h=X-QQ-FEAT:X-QQ-SSF:X-HAS-ATTACH:X-QQ-BUSINESS-ORIGIN:
     X-Originating-IP:In-Reply-To:References:X-QQ-STYLE:X-QQ-mid:From:To:Subject:Mime-Version:Content-Type:Content-Transfer-Encoding:Date:
     X-Priority:Message-ID:X-QQ-MIME:X-Mailer:X-QQ-Mailer:
     X-QQ-ReplyHash:X-QQ-SENDSIZE:X-QQ-FName:X-QQ-LocalIP;
    b=QXs4CveboS8nG6htN9W6amC3X+F7X3ZtFrt6jrjWI+RmbvqBuTCVmX9IlaqCX84H8
     n14x2Wp7x4kDYcNRqhe+HjTpf715TTQXc4d40b9e38frC/5qIhpMtYNsD8iEJwRzHW
     U3xi8Yq7OCIB303fIpytx8tOjexQpZKSHbJ7ecX0=
X-QQ-FEAT: zaIfg0hwV2pIDflZYPQUsuPPXG5wtRVHJU6PiOYLBBA=
X-QQ-SSF: 00010000000000F000000000000000L
X-HAS-ATTACH: no
X-QQ-BUSINESS-ORIGIN: 2
X-Originating-IP: 180.155.99.102
In-Reply-To: <trinity-b7c6d611-52fd-4afa-b739-2deb243532a6-1402761364579@3capp-mailcom-lxa05>
References: <[email protected]>,
 <[email protected]>
    <trinity-b7c6d611-52fd-4afa-b739-2deb243532a6-1402761364579@3capp-mailcom-lxa05>
X-QQ-STYLE: 
X-QQ-mid: webmail474t1402762303t356131
From: "=?gb18030?B?08bTzg==?=" <[email protected]>
To: "=?gb18030?B?V2lsaGVsbSBLdW1tZXI=?=" <[email protected]>
Subject: =?gb18030?B?u9i4tKO6ILvYuLSjulBhbGFjZSBXZXN0bWluc3Rl?=
 =?gb18030?B?cjogMDEtMDctMjAxNCAtIDA0LTA3LTIwMTQ=?=
Mime-Version: 1.0
Content-Type: multipart/alternative;
    boundary="----=_NextPart_539C743F_08A07490_0157E268"
Content-Transfer-Encoding: 8Bit
Date: Sun, 15 Jun 2014 00:11:43 +0800
X-Priority: 3
Message-ID: <[email protected]>
X-QQ-MIME: TCMime 1.0 by Tencent
X-Mailer: QQMail 2.x
X-QQ-Mailer: QQMail 2.x
X-QQ-ReplyHash: 170675637
X-QQ-SENDSIZE: 520
X-QQ-FName: 7B2EFFAD16B8462B84D3499A4CC7DDEF
X-QQ-LocalIP: 163.177.66.155
Envelope-To: <[email protected]>
X-GMX-Antispam: 0 (Mail was not recognized as spam); Detail=V3;
X-GMX-Antivirus: 0 (no virus found)

Edit:

我尝试过使用charset打包了但是没有效果。我仍然在相同的消息上收到相同的错误。

import "code.google.com/p/go-imap/go1/imap"
header := imap.AsBytes(rsp.MessageInfo().Attrs["RFC822.HEADER"])

            r, err := charset.NewReader("UTF-8", bytes.NewReader(header))
            if err != nil {
                log.Fatal(err)
            }
            fmt.Printf("new char is %v", r)

            msg, err := mail.ReadMessage(r)
            if err != nil {
                log.Fatal(err)
                return mgs, err
            }

            mg.From, err = msg.Header.AddressList("From")
            if err != nil {
                log.Errorf("NO FROM msg %s, err %v", header, err)
             return
              }

邮件包好像只能解码rfc2047但字符集包不支持这个

character set "rfc2047" not found

它似乎mahonia哪个可以解决这个问题？

我希望这可以帮助那些可能考虑使用 Go 处理电子邮件（即开发客户端应用程序）的人。看起来标准的 Go 标准库对于电子邮件处理来说还不够成熟。它不处理多部分、不同的字符集等。在尝试了不同的 hack 和软件包几乎一天之后，我决定扔掉 go 代码并使用旧的良好 JavaMail 解决方案。