使用java將電子郵件轉換為其原始格式

Question

我一直嘗試使用JavaMail api創建一個MimeMessage類型的對象，然后獲取其原始表示，但沒有成功。 我唯一能獲得的是電子郵件內容的原始表示，但不包括標題，主題或收件人。 我感興趣的任何建議，任何Java庫，可以幫助我創建一個電子郵件對象，然后獲得其原始表示。 原始表示應該如下所示：

received: from imta14.emeryville.ca.mail.myisp.net ([nn.nn.30.46])
by alnrmxc19.isp.net (alnrmxc19) with ESMTP
id <20080930215116a19007q9u6e>; Tue, 30 Sep 2008 21:51:16 +0000
X-Originating-IP: [nn.nn.30.46]
Received: from libertatea.go ([nn.nn.161.160])
by IMTA14.mail.isp.net with isp
id M9qy1a00V3TwUto0E9rELB; Tue, 30 Sep 2008 21:51:15 +0000
X-Authority-Analysis: v=1.0 c=1 a=DZlucjOqAY8A:10 a=mnGO974OAAAA:8
a=9MJFf195B83LjESASTQA:9 a=Lm7NQ261g8eJHgoaELoA:7
a=7Narey355jFQWZRww2lj1r9-lCkA:4 a=8COHQAuY8ZYA:10 a=zEVpGHA-kecA:10
a=37WNUvjkh6kA:10
Received: by libertatea.go id hm1nfa0di0sn for <xxx@myisp.net>; Sun,30 Sep 2018 09:36:35
+0300 (envelope-from <Hometown.Quotes_ary@mousemegadot.com>)
Message-ID: <79864795@mousemegadot.com>
Date: Sun, 30 Sep 2018 09:36:35 +0300
From: "Hometown Quotes" <Hometown.Quotes_ary@mousemegadot.com>
To: dummy@myisp.net
Subject: Find Affordable Auto Insurance Today
MIME-Version: 1.0
X-UID: 79864795.modhnrfo.jhhnk.1
Content-Type: multipart/alternative; boundary="0-1411506895-1200484069=:66653"
Content-Transfer-Encoding: 8bit
X-PMFLAGS: 570966272 9 1 PE71PYHD.CNM 
X-UC-Weight: [# ] 51
X-CC-Diagnostic: Test 'LazyHTML Tolerant' (51)

--0-1411506895-1200484069=:66653
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

--0-1411506895-1200484069=:66653
Content-transfer-encoding: 8bit
Content-Type: text/html; charset=iso-8859-1; DelSp="Yes"; format="flowed"

Answer 1

您正在尋找的是MimeMessag＃writeTo ，它將消息作為RFC 822格式流輸出。

使用writeTo將MimeMessage轉換為String的示例。

MimeMessage mimeMessage;

// mimeMessage get assigned

ByteArrayOutputStream output = new ByteArrayOutputStream();
mimeMessage.writeTo(output);
String rawEmail = output.toString();