Question

   public static boolean sendEmail() throws Exception {
   ServerSettings server; 
   String receiver="someone@example.org"; 
   File mail = new File("file.eml"); 
   String subject = "subject";
        try {
            Properties props = System.getProperties();
            Session session = Session.getInstance(props, null);
            Message msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress("someoneelse@example.org"));;
            msg.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(receiver, false));
            InputStream is = new FileInputStream(mail.getAbsoluteFile());
            MimeMessage message = new MimeMessage(session, is);
            msg.setSubject(subject);
            msg.setContent(message.getContent(), message.getEncoding());
            msg.setHeader("X-Mailer", "Email program");
            msg.setSentDate(new Date());
            SMTPTransport t = null;
            props.put("mail.smtp.host", "smtp.outlook.com");
            t = (SMTPTransport) session.getTransport("smtp");
            t.setStartTLS(true);
            t.connect("smtp.outlook.com", 587, "someone@example.org", "1234");
            t.sendMessage(msg, msg.getAllRecipients());
            System.out.println("Response: " + t.getLastServerResponse());
            return true;
        } catch (Exception e) {
            System.out.println("Not sent error: ");
            e.printStackTrace();
            throw e;
            return false;
        }
        return false;
    }

错误：

如果我使用Thunderbird保存EML文件，我会正常发送消息。但是，如果使用Google show original message，我会收到以下错误

javax.mail.internet.ParseException: Expected '/', got null
    at javax.mail.internet.ContentType.<init>(ContentType.java:102)
    at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1331)
    at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2107)
    at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2075)
    at javax.mail.Transport.send(Transport.java:145)

示例：

Thunderbird EML：

Date: Tue, 6 Jun 2017 13:59:47 -0300 (BRT)
From: <redacted>@t-online.de To: <redacted>@gmail.com
Message-ID: <1310540333.0.1496768392987.JavaMail.Mansueli@Mansueli-Computer>
Subject: japanese encoding issue
MIME-Version: 1.0
Content-Type: text/html; charset=UTF-8; Content-Transfer-Encoding=7bit
Content-Transfer-Encoding: base64

PGh0bWw+PGJvZHk+PHA+0JLRiyDQv9C+0LvRg9GH0LjQu9C4INGN0YLQviDQv9C40YHRjNC80L4g 0LjQty3Qt9CwINC/0L7Qv9GL0YLQutC4INCy0YXQvtC00LAg0YEg0LrQvtC80L/RjNGO0YLQtdGA PC9oMT48L2JvZHk+PC9odG1sPg==

Google txt：

Received-SPF: pass (google.com: best guess record for domain of <redacted>@t-online.de designates 194.25.134.84 as permitted sender) client-ip=194.25.134.84; Authentication-Results: mx.google.com;
       spf=pass (google.com: best guess record for domain of <redacted>@t-online.de designates 194.25.134.84 as permitted sender) smtp.mailfrom=<redacted>@t-online.de
Date: Tue, 6 Jun 2017 13:59:47 -0300 (BRT)
From:<redacted>@t-online.de
To: <redacted>@gmail.com
Message-ID: <1310540333.0.1496768392987.JavaMail.Mansueli@Mansueli-Computer>
Subject: japanese encoding issue
MIME-Version: 1.0
Content-Type: text/html; charset=UTF-8; Content-Transfer-Encoding=7bit
Content-Transfer-Encoding: base64

PGh0bWw+PGJvZHk+PHA+0JLRiyDQv9C+0LvRg9GH0LjQu9C4INGN0YLQviDQv9C40YHRjNC80L4g 0LjQty3Qt9CwINC/0L7Qv9GL0YLQutC4INCy0YXQvtC00LAg0YEg0LrQvtC80L/RjNGO0YLQtdGA PC9oMT48L2JvZHk+PC9odG1sPg==

Google是否显示原始邮件不是有效的EML？如何使其符合JavaMail EML解析器？

Answer 1

您正在将原始邮件中的内容复制到新邮件中，并且您正在使用编码作为MIME类型，而不是，这就是您获得异常的原因。（Google vs. Thunderbird在这里不应该有所作为。）

请尝试使用这个更简单的版本：

        Properties props = System.getProperties();
        props.put("mail.smtp.host", "smtp.outlook.com");
        props.put("mail.smtp.starttls.enable", "true");
        Session session = Session.getInstance(props, null);
        InputStream is = new FileInputStream(mail.getAbsoluteFile());
        MimeMessage msg = new MimeMessage(session, is);
        msg.setFrom(new InternetAddress("someoneelse@example.org"));;
        msg.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse(receiver, false));
        msg.setSubject(subject);
        msg.setHeader("X-Mailer", "Email program");
        msg.setSentDate(new Date());
        Transport.send(msg, "someone@example.org", "1234");

如何在JavaMail上发送Google的原始邮件？

1 个答案: