Not able to read content of mail using JavaMail

Question

I'm trying to read the content of mail using JavaMail

Object msg = message.getContent();
Multipart mp = (Multipart) msg;
for(int k = 0; k < mp.getCount(); k++) {
    BodyPart bp = mp.getBodyPart(k);
    if (bp.isMimeType("text/plain")) {
        String s = (String) bp.getContent();
        System.out.println("Content:" + s);
    }
    else if(bp.isMimeType("text/html")) {
        String s = (String) bp.getContent();
        System.out.println("Content:" + s);
    }
}

But I'm getting the following error:

java.lang.ClassCastException: java.lang.String cannot be cast to javax.mail.Multipart

How can I remove this?

Are trying to read the Email from your Email id or is it something else you're trying? — Varun Jain, May 04 '15 at 07:03

score 1 · Answer 1 · answered May 04 '15 at 07:03

Object msg = message.getContent();
Multipart mp = (Multipart) msg;

message.getContent() not necessarily needs to be multipart message - if it's not multipart, it returns plain message content as a string.

if (msg istanceof Multipart) {
    // your multipart handling code
} else {
    String s = (String) msg;
    System.out.println("Content:" + s);
}

-edit-

There is also third case, when input stream is returned: http://docs.oracle.com/javaee/6/api/javax/mail/Part.html#getContent()

score 1 · Accepted Answer · answered May 04 '15 at 07:06

The type of the returned object is dependent on the content itself. The object returned for text/plain content is usually a String object. The object returned for a multipart content is always a Multipart subclass.

Use perator instanceof, to find out what class of the object.

Object content = message.getContent();  
if(content instanceof String) {  
   ...
} else if(content instanceof Multipart) {  
    ...  
}

score 0 · Answer 3 · answered May 04 '15 at 07:04

0

It seems the email sent is not of Multipart content type. Check if the email has attachments first:

String contentType = message.getContentType();

if (contentType.contains("multipart")) {

}

answered May 04 '15 at 07:04

Tony Vu

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Not able to read content of mail using JavaMail

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