我正在用 javamail 编写邮件发送方法。我不明白为什么我得到错误：未设置收件人。这是我的代码：
public static void sendMail(String to, String subj, String body, String attachmentName, byte[] attachment, String mime) throws Exception {
Properties p = System.getProperties();
Session session = Session.getInstance(p);
MimeMessage dummyMessage = new MimeMessage(session);
dummyMessage.setFrom(new InternetAddress(LovProvider.getOpzioni().get("mail.address")));
dummyMessage.setSubject(subj);
String[] tos = to.split(";");
Address[] tosAddr = new InternetAddress[tos.length];
for (int i = 0; i < tos.length; i++) {
tosAddr[i] = new InternetAddress(tos[i]);
}
dummyMessage.setRecipients(Message.RecipientType.TO, tosAddr);
Multipart mp = new MimeMultipart();
MimeBodyPart bp = new MimeBodyPart();
bp.setText(body);
mp.addBodyPart(bp);
if (attachmentName != null && attachment != null) {
DataSource dataSource = new ByteArrayDataSource(attachment, mime);
MimeBodyPart attachBodyPart = new MimeBodyPart();
attachBodyPart.setDataHandler(new DataHandler(dataSource));
attachBodyPart.setFileName(attachmentName);
mp.addBodyPart(attachBodyPart);
}
dummyMessage.setContent(mp);
//***** DEBUGGING here I find the recipient
sendMail(dummyMessage.getInputStream());
}
public static void sendMail(InputStream emlFile) throws Exception {
Properties props = System.getProperties();
props.put("mail.host", LovProvider.getOpzioni().get("mail.out.host"));
props.put("mail.transport.protocol", LovProvider.getOpzioni().get("mail.out.protocol"));
props.put("mail." + LovProvider.getOpzioni().get("mail.out.protocol") + ".port", LovProvider.getOpzioni().get("mail.out.port"));
Session mailSession = Session.getDefaultInstance(props, PasswordAuthentication.getAuth(LovProvider.getOpzioni().get("mail.out.user"), LovProvider.getOpzioni().get("mail.out.password")));
MimeMessage message = new MimeMessage(mailSession, emlFile);
//***** DEBUGGING here I CAN NOT find the recipient
Transport.send(message);
}
正如我在调试模式下的评论中所写的，我可以看到在第一部分中正确设置了收件人，如果我将其转换为 InputStream 到第二种方法，我再也找不到收件人了。