无法在 MFP 7.0 Java 适配器中发送电子邮件 JavaMail API

Posted 2023-02-26

【中文标题】无法在 MFP 7.0 Java 适配器中发送电子邮件 JavaMail API

【英文标题】：Unable to send email JavaMail API in MFP 7.0 Java adapter

【发布时间】：2016-11-03 14:27:44

【问题描述】：

我在 MFP 7.0 中使用下面的代码通过 java 适配器发送电子邮件，它也有附件。

try 
        StringBuffer sb = new StringBuffer();
        try 
            sb.append("<p style='font-family:Sans-serif;font-size: 12px'>Dear Xyz,<br><br>Attachment :</p>");
            sb.append("<p style='font-family:Sans-serif;font-size: 12px'>Regards, <br><br>  Team");
            String mailHost = "10.x.x.x";
            String mailFrom = "[e-mail]";
            String mailTo = email;
            String mailSubject = "Subject";
            String mailBody = sb.toString();
            String mailAttachment = "" + fileName;

            Properties properties = System.getProperties();
            properties.setProperty("mail.smtp.host", mailHost);

            Session session = Session.getDefaultInstance(properties);

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress(mailFrom));
            Address[] toAddress = null;

            if (mailTo != null) 
                toAddress = InternetAddress.parse(mailTo);
                message.setRecipients(Message.RecipientType.TO, toAddress);
            

            message.setSubject(mailSubject);

            MimeBodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setContent(mailBody, "text/html");
            Multipart multipart = new MimeMultipart();
            multipart.addBodyPart(messageBodyPart);
            messageBodyPart = new MimeBodyPart();
            String attachmentLocation = mailAttachment;
            DataSource source = new FileDataSource(attachmentLocation);
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName(new File(attachmentLocation)
                    .getName());
            multipart.addBodyPart(messageBodyPart);
            message.setContent(multipart);

            Transport.send(message);
         catch (AddressException e) 
            e.printStackTrace();
         catch (MessagingException e) 
            e.printStackTrace();
        

我收到以下错误。

java.lang.ClassCastException: org.apache.geronimo.mail.handlers.HttpHandler cannot be cast to javax.activation.DataContentHandler jax rs

请就这个问题提出建议，因为类 HttpHandler 来自我无法覆盖的 worklight-jee-library.jar。他们是否可以从 Java 适配器发送带有附件的电子邮件。

【问题讨论】：

看起来您使用的是 Gnu 版本的 JavaMail。如果您可以切换到JavaMail reference implementation，您可能会更幸运。如果 Gnu 版本嵌入在 worklight 库中，并且您无法更改它，您可能需要联系 IBM 寻求帮助。

@arun punnath，这个问题有什么更新吗？

【参考方案1】：

我们的做法有点不同...

在应用逻辑中：

...
...    
for (var i = 0; i < devices.resultSet.length; i++) 
    var sendResult = com.SendMail.SendMail.sendMail(devices.resultSet[i].email, devices.resultSet[i].serial, devices.resultSet[i].manufacturer, devices.resultSet[i].days);
    results.push(sendResult);

...

还有 Java 代码（存储在 server/java/com/SendMail/SendMail.java 中）——您显然需要更改实现细节...：

package com.SendMail;

import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;

public class SendMail 
    public static String sendMail(String emailAddress) 
     String debugMessage = "";


          // Recipient's email ID needs to be mentioned.
          //String to = "[e-mail]";
          String to = emailAddress;

          // Sender's email ID needs to be mentioned
          String from = "the-senders-email-address";

          Properties props = new Properties();
          props.put("mail.smtp.host", "the.host.name.com");
          props.put("mail.smtp.port", "25");

          // Get the default Session object.
          Session session = Session.getDefaultInstance(props);

          try
             // Create a default MimeMessage object.
             MimeMessage message = new MimeMessage(session);

             // Set From: header field of the header.
             message.setFrom(new InternetAddress(from));

             // Set To: header field of the header.
             message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

             // Set Subject: header field
             message.setSubject("the email subject line");

             // Now set the actual message
             message.setText("the email body message");


             // Send message
             Transport.send(message);
             debugMessage="Email sent successfully to " + emailAddress;

           catch (MessagingException mex) 
             mex.printStackTrace();
             debugMessage=mex.toString();
          

          return debugMessage;