如何使用java API提取.dat文件（包含图像）

Question

如果我在POI jar中使用HMEFContentsExtractor，它只能提取html，它不能从winmail.dat（从oulook发送的附件邮件）中提取图像内容，是否有任何jar文件来执行此操作＆amp;解释如何使用它。

HMEFContentsExtractor ext = new HMEFContentsExtractor(new File(winmailFilename));
File dir = new File(directoryName);
File rtf = new File(dir, "message.rtf");
if(! dir.exists()) {
     throw new FileNotFoundException("Output directory "+dir.getName()+" not found");   
}
HMEFMessage msg = new HMEFMessage(new FileInputStream(winmailFilename));
msg.getAttachments();ext.extractMessageBody(rtf);