JavaMail发送带多个附件的邮件，多个收件人，多个抄送人

/**      * 方法描述：发送带附件的邮件      *       * @throws UnsupportedEncodingException      */      public static boolean sendEmailWithAttachment(Email email)              throws UnsupportedEncodingException {          Properties prop = new Properties();          prop.put("mail.smtp.host", mailServer);          prop.put("mail.smtp.auth", "true");          Authenticator auth = new MailAuthenticator();          Session session = Session.getDefaultInstance(prop, auth);          Message message = new MimeMessage(session);          boolean flag = false;          try {              message.setSubject(email.getEmail_subject());// 设置邮件主题              message.setHeader("Header:", email.getEmail_header()); // 设置邮件标题              message.setSentDate(new Date()); // 设置发送时间              Address addressFrom = new InternetAddress(mailAddress, mailAccount); // 设置发信人地址              message.setFrom(addressFrom);              BodyPart messageBodyPart = new MimeBodyPart();              messageBodyPart.setContent(email.getEmail_content(),  "text/html;charset=utf-8");              Multipart multipart = new MimeMultipart();              multipart.addBodyPart(messageBodyPart);              MimeBodyPart mimeBodyPart;              //多个附件              for (int i = 0; i < email.getEmail_file().size(); i++) {                  Map<String, String> map = email.getEmail_file().get(i);                  String fileSource="";                  String fileName="";                  for (String key : map.keySet()) {                      fileSource = key;                      fileName = map.get(key);                  }                  mimeBodyPart = new MimeBodyPart();                  DataSource source = new FileDataSource(fileSource);                  mimeBodyPart.setDataHandler(new DataHandler(source));                  mimeBodyPart.setFileName(MimeUtility.encodeText(fileName));                  multipart.addBodyPart(mimeBodyPart);// Put parts in              }              message.setContent(multipart);               // 设置多个收件人地址              List<String> list = email.getEmail_to();              String toAddress = SendEmail.getAddress(list);              InternetAddress[] internetAddressTo = new InternetAddress().parse(toAddress);              message.setRecipients(Message.RecipientType.TO, internetAddressTo);              // 设置多个抄送地址              String ccAddress = SendEmail.getAddress(email.getEmail_cc());              InternetAddress[] internetAddressCC = new InternetAddress().parse(ccAddress);              message.setRecipients(Message.RecipientType.CC, internetAddressCC);              message.saveChanges();              System.out.println("开始发送邮件……");              Transport.send(message);              System.out.println("发送成功！");              flag = true;          } catch (MessagingException e) {              System.out.println("发送失败！");              flag = false;              e.printStackTrace();          }          return flag;      }