使用java将电子邮件转换为其原始格式
到目前为止，我尝试使用JavaMail api创建一个MimeMessage类型的对象，然后获取其原始表示，但没有成功。 我唯一可以获得的是电子邮件内容的原始表示，但不包括标题，主题或收件人。 我感兴趣的任何建议，任何Java库，可以帮助我创建一个电子邮件对象，然后获得其原始表示。 原始表示应该如下所示：
received: from imta14.emeryville.ca.mail.myisp.net ([nn.nn.30.46]) by alnrmxc19.isp.net (alnrmxc19) with ESMTP id ; 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 ; Sun,30 Sep 2018 09:36:35 +0300 (envelope-from ) Message-ID: Date: Sun, 30 Sep 2018 09:36:35 +0300 From: "Hometown Quotes" 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"
您正在寻找的是MimeMessag＃writeTo ，它将消息作为RFC 822格式流输出。
使用writeTo将MimeMessage转换为String的示例。
MimeMessage mimeMessage; // mimeMessage get assigned ByteArrayOutputStream output = new ByteArrayOutputStream(); mimeMessage.writeTo(output); String rawEmail = output.toString();