java发送带有附件pdf的电子邮件不起作用

问题描述

我一直在寻找如何添加pdf并将其通过邮件发送很长时间..但是所有代码对我都失败了，我终于尝试了这个，对我来说听起来很正确，但是仍然显示错误 这是我的文章：

{
  "id": 1,"name": "Test","lines": []
}

在第一时间，它曾经向我显示有关主机的错误信息，但我更正了它们，现在这是显示的错误信息

   public static void send(String to,Document document) {
            String content = "dummy content"; //this will be the text of the email
            String subject = "dummy subject"; //this will be the subject of the email
            String receiver="[e-mail]";
            Properties properties = System.getProperties();
            properties.setProperty("mail.smtp.localhost","https://fr.yahoo.com/");
            properties.put("mail.smtp.auth","true");
    
            Session session = Session.getDefaultInstance(properties,new javax.mail.Authenticator() {
                protected PasswordAuthentication getpasswordAuthentication() {
                    return new PasswordAuthentication(username,password);
                }
            });
    
            //2) compose message      
            ByteArrayOutputStream outputStream = null;
    
            try {
                //construct the text body part
                MimeBodyPart textBodyPart = new MimeBodyPart();
                textBodyPart.setText(content);
    
                //Now write the PDF content to the output stream
                outputStream = new ByteArrayOutputStream();
                PdfWriter.getInstance(document,outputStream);
                byte[] bytes = outputStream.toByteArray();
    
                //construct the pdf body part
                DataSource dataSource = new ByteArrayDataSource(bytes,"application/pdf");
                MimeBodyPart pdfBodyPart = new MimeBodyPart();
                pdfBodyPart.setDataHandler(new DataHandler(dataSource));
                pdfBodyPart.setFileName("test.pdf");
    
                //construct the mime multi part
                MimeMultipart mimeMultipart = new MimeMultipart();
                mimeMultipart.addBodyPart(textBodyPart);
                mimeMultipart.addBodyPart(pdfBodyPart);
    
                //create the sender/recipient addresses
                InternetAddress iaSender = new InternetAddress(username);
                InternetAddress iaRecipient = new InternetAddress(receiver);
    
                //construct the mime message
                MimeMessage mimeMessage = new MimeMessage(session);
                mimeMessage.setSender(iaSender);
                mimeMessage.setSubject(subject);
                mimeMessage.setRecipient(Message.RecipientType.TO,iaRecipient);
                mimeMessage.setContent(mimeMultipart);
    
                //send off the email
                Transport.send(mimeMessage);
    
                System.out.println("sent from " + username
                        + ",to " + to
                        + "; server = " + ",port = ");
            } catch (Exception ex) {
                ex.printstacktrace();
            } finally {
                //clean off
                if (null != outputStream) {
                    try {
                        outputStream.close();
                        outputStream = null;
                    } catch (Exception ex) {
                    }
                }
            }
        }

谁能纠正我的代码请求

解决方法

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