要在 JavaMail 创建的消息中内联显示的图像在 Apple Mail 中出现两次 - 但不是 Outlook？
EmailMaster 发送一条测试电子邮件消息，其中包括：1) 与电子邮件一起发送的图像，在打开消息时显示在标题中 2) 显示消息后必须从远程 URL 下载的图像链接.
目标是在打开消息时完全呈现消息 (owl)。不需要读者在看到完整消息之前下载它。
当邮件在 Outlook 等客户端中打开时，下面的代码可以完美运行。-- 猫头鹰图片打开时显示在一行中，并且 -- 必须下载下划线。
当 AppleMail 打开邮件时，猫头鹰会显示两次。屏幕显示： -- 猫头鹰作为独立图像， -- 然后在标题中正确显示猫头鹰的消息。
我无法发布屏幕截图，但我将 AppleMail 屏幕的屏幕截图放在 http://america-3.org/images/shot.jpg
谁能指出问题的原因？还是解决方案？
作为一个 MimeBodyPart 添加的 HTML 代码。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link href="cid:fonts" rel="stylesheet" type="text/css" />
<style type="text/css">
<!--
.text-blue-12 {font-family: Verdana, Arial, Helvetica, sans-serif;
text-decoration: none; font-weight: normal;
font-size:12pt; color: #0F0F0F}
body { margin: 0; padding: 0; background-color: #1A4576; width: 480px;}
tr {width:100%; background-color: white;}
-->
</style>
</head>
<body>
<table width='480px' cellspacing='0' cellpadding='6' class='text-blue-12' align="center">
<tr><td style='text-align: center;'>
Hello! <img src='cid:owl'>
</td></tr>
<tr><td style='text-align: center;'>
<img align="center" alt="Shadow" class="kmImage"
src="https://d3k81ch9hvuctc.cloudfront.net/assets/email/bottom_shadow_444.png"
width="600" style="border: 0; height: auto; line-height: 100%;
outline:none; text-decoration: none; max-width: 100%; padding-bottom: 0;
display: inline; vertical-align: bottom" />
</td></tr>
<tr><td>
This is test # 1005. The Table should be a 480px wide and centered.
If not there is a problem.
</td></tr>
<tr><td>
Yours truly,
GLB
</td></tr>
</table>
</body>
</html>
我用来测试 JavaMail 代码的 Java 类的提取
public class EmailMaster {
/* JavaMail attempts to use IPv6 to connect. Windows IPv4.
* The error message will be "Network Unreachable: Connect.
* To fix it, I ran this code from the command window
* setx _JAVA_OPTIONS -Djava.net.preferIPv4Stack=true
* I tried to set _JAVA_OPTIONS as an environment variable but that didn't
* work.
*/
/* the constructor instantiates EmailMaster.
* It parses a ".properties" text file that provides the everything
* needed to define a message:
* -- send from, reply to, subject etc. Strings
* -- local paths to one or more files:
* .. a text file containing the to addresses.
* .. the HTML file that holds the message body,
* .. one of more images to be displayed inline
* in the HTML message body. I used one.
* .. one or more files to be attached to the msg. I used one.
*/
/* then it calls sendEmail() to read through the list of addresses
* and sends an individual email to each address*/
sendEmail () {
/*this section of code is done once. */
Session session = Session.getInstance(this.sessionParameters);
SMTPTransport tr = new SMTPTransport(session, new URLName (host));
tr.connect(...); // this is successful
/* the method loops through this section for every to address provided*/
Message msg = new MimeMessage(session);
msg.setReplyTo(this.replyToAddress);// read from properties file
msg.setSentDate(new java.util.Date());// read from properties file
msg.setSubject(this.subject);// read from properties file
msg.setFrom(this.fromAddress);// read from properties file
msg.setRecipient(RecipientType.TO, singleToAddress);// read from properties file
MimeMultipart mmp = new MimeMultipart();
/* add a MimeBodyPart for each image be displayed inline the HTML text */
for (MimeBodyPart part : this.imagesBodyParts.values()) {
mmp.addBodyPart(part);
/* add a MimeBodyPart for each HTML page in the message. */
for (MimeBodyPart part : this.attachmentBodyParts.values()) {
mmp.addBodyPart(part);
}
mmp.addBodyPart(this.msgPart);
msg.setContent(mmp);
msg.saveChanges();
tr.sendMessage(msg, msg.getAllRecipients());
}
}