Question

我正在使用JavaMail在我的Android应用中阅读邮件。我试图覆盖所有组合，即在/自定义服务器/ Gmail ID / Live ID上发送/接收的邮件。

从GMail WITH Attachment发送的一些邮件会出现问题。我能够收到附件，但内容会返回javax.mail.internet.MimeMultipart@44f2e698

以下是用于接收和阅读消息的代码：

    Properties props = System.getProperties();
    props.setProperty("mail.store.protocol", "imap");

    try {
     /* Create the session and get the store for read the mail. */
     Session session = Session.getInstance(props, null);
     Store store = session.getStore("imaps");
     store.connect("imap.gmail.com", Username, Password);

     /* Mention the folder name which you want to read. */
     Folder inbox = store.getFolder("INBOX");
     System.out.println("No of Unread Messages : " + inbox.getUnreadMessageCount());         

     /* Open the inbox using store. */
     inbox.open(Folder.READ_ONLY);

     Message messages[] = inbox.getMessages();       
     Log.d("Inbox", "Message Count: "+inbox.getMessageCount());

     for (int i = messages.length - 1 ; i > 0; --i) {
         Log.i("ContentType", "ContentType: "+messages[i].getContentType());

         Object msgContent = messages[i].getContent();

         String content = "";

         /* Check if content is pure text/html or in parts */            
         if (msgContent instanceof Multipart) {

             Multipart multipart = (Multipart) msgContent;

             Log.e("BodyPart", "MultiPartCount: "+multipart.getCount());

             for (int j = 0; j < multipart.getCount(); j++) {

              BodyPart bodyPart = multipart.getBodyPart(j);

              String disposition = bodyPart.getDisposition();

              if (disposition != null && (disposition.equalsIgnoreCase("ATTACHMENT"))) { // BodyPart.ATTACHMENT doesn't work for gmail
                  System.out.println("Mail have some attachment");

                  DataHandler handler = bodyPart.getDataHandler();
                  System.out.println("file name : " + handler.getName());                                 
                }
              else { 
                  System.out.println("Content: "+bodyPart.getContent());
                  content= bodyPart.getContent().toString();
                }
            }
         }
         else                
             content= messages[i].getContent().toString();

我对有问题的邮件了解的内容：

getFrom也会返回该名称，即它的格式为FirstName LastName＆amp; ltemailID@gmail.com& gt
MultiPart包含2个BodyParts：
- BodyPart 1将内容返回为javax.mail.internet.MimeMultipart@44f2e698
- BodyPart 2返回正确的附件名称

Answer 1

BodyPart 1将内容返回为 javax.mail.internet.MimeMultipart@44f2e698

尝试在MimeMultiPart

上调用getBodyPart

这可能会返回一个MimeBodyPart，您可以调用getContent() http://docs.oracle.com/javaee/5/api/javax/mail/internet/MimeBodyPart.html#content

Answer 2

您可能只处理带附件的文本消息的最简单情况。 MIME允许更多。您需要了解multipart / mixed，multipart / alternative，multipart / related和multipart / signed之间的区别。 JavaMail FAQ提供了有关处理附件的更多信息，JavaMail下载包中包含的msgshow.java演示程序显示了如何使用嵌套的多部分处理消息。

阅读GMail发来的邮件

2 个答案: