我正在嘗試使用 Gmail API 在 Java 中創建帶有附件的草稿。創建一個基本的草稿是有效的，所以我已經消除了任何權限問題。我在這里使用代碼作為靈感，但無法讓它發揮作用。這是我到目前為止所做的：public String generateGmailDraft(EmailRequestDto emailRequestDto, String quoteId) throws MessagingException, IOException, GeneralSecurityException { // The attachment is a PDF file AttachmentDto lastQuoteData = getLastQuotePdfData(quoteId); MimeMessage email = createMimeMessage(emailRequestDto, lastQuoteData); Message messageWithEmail = createMessageWithEmail(email); Draft draft = new Draft(); draft.setMessage(messageWithEmail); // this works Gmail gmail = gmail(googleGmailCredentialProperties); log.debug("attempting to send mail"); draft = gmail.users().drafts().create(emailRequestDto.getFrom(), draft).execute(); log.debug("Draft id: {}", draft.getMessage().getId()); log.debug(draft.toPrettyString()); return draft.getMessage().getId();}從 Google 示例中，我創建了一個 MIME 消息，但這可能是問題所在：/** * Create a MimeMessage using the parameters provided * @return the MimeMessage to be used to send email * @throws MessagingException */private MimeMessage createMimeMessage(EmailRequestDto requestDto, AttachmentDto attachment) throws MessagingException, IOException { Properties props = new Properties(); Session session = Session.getDefaultInstance(props, null); MimeMessage email = new MimeMessage(session); email.setFrom(new InternetAddress(requestDto.getFrom())); email.addRecipient(javax.mail.Message.RecipientType.TO, ew InternetAddress(requestDto.getTo())); email.setSubject(requestDto.getSubject()); BodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setHeader("Content-Type", "multipart/alternative");}
1 回答
慕工程0101907
TA貢獻1887條經驗 獲得超5個贊
嘗試與此類似的操作：
private MimeMessage createEmailWithAttachment(String to,
String subject,
String bodyText,
File file) throws MessagingException, IOException {
Properties props = new Properties();
Session session = Session.getDefaultInstance(props, null);
MimeMessage email = new MimeMessage(session);
email.addRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(to));
email.setSubject(subject);
MimeBodyPart mimeBodyPart = new MimeBodyPart();
mimeBodyPart.setContent(bodyText, "text/plain");
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(mimeBodyPart);
mimeBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(file);
mimeBodyPart.setDataHandler(new DataHandler(source));
mimeBodyPart.setFileName(file.getName());
multipart.addBodyPart(mimeBodyPart);
email.setContent(multipart);
return email;
}
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