我正在嘗試在 javamail API 的幫助下發送兩個附件，但發件人正在接收附件作為轉發消息傳遞給發件人的郵件。此外，我無法在郵件中看到正文。我正在發送到 Outlook 電子郵件客戶端。其類似的附件將作為同一郵件中的單獨郵件發送，當我單擊郵件中的單獨郵件時，它會顯示附件。就像我在同一郵件中打開了另一封郵件一樣。誰能檢查我做錯了什么當我點擊內部郵件時，我現在得到了什么下面是代碼    deltaDf.coalesce(1)    .write.mode("overwrite")    .format("com.databricks.spark.csv")    .option("header", "true")    .save("/user/test/test1/Deltafile/")  val deltahdfsname = fs.globStatus(new Path("/user/test/test1/Deltafile/part*"))(0).getPath().getName()  val deltapath = new Path(fs.getName() + "/user/test/test1/Deltafile/" + deltahdfsname)  val deltastream = fs.open(deltapath)  val deltafileName = "delta.csv"  val bodyText = "Hi All, <br> </br> Attached are the Concur Delta File and Exception Report  <br> </br>  please take the neccassory Action."  val from = "[email protected]"  val smtpHost = "xmail.xxxxx.com"  val properties = System.getProperties  properties.put("mail.smtp.host",smtpHost)  properties.put("mail.from", from)  properties.put("mail.smtp.auth", "false")  properties.put("mail.smtp.port", "25")  properties.put("mail.smtp.starttls.enable", "true")   val deltaBodyPart = new MimeBodyPart()    deltaBodyPart.setDataHandler(new DataHandler(new ByteArrayDataSource(deltastream, "text/csv")))    deltaBodyPart.setFileName(deltafileName)    val multipart = new MimeMultipart()    multipart.addBodyPart(deltaBodyPart)    //multipart.addBodyPart(ExceptionBodyPart)    val session = Session.getInstance(properties)    var message = new MimeMessage(session)    message.setFrom(new InternetAddress("[email protected]"))    message.setRecipients(Message.RecipientType.TO, "[email protected]")    message.setSubject("test message")    message.setText("bodyText","text/html;charset=utf-8")    message.setContent(multipart,"text/html;charset=utf-8")    Transport.send(message)我只希望發件人應該在一個窗口中接收附件。