Printing out the email address of sender from InternetAddress

问题

This is the code that fetches up the sender and the subject of email.With this code i see the correct subject getting displayed but i see the address of the sender in different format.

Properties props = new Properties();
    props.put("mail.imap.host" , "imap.gmail.com" );
    props.put("mail.imap.user" , "username");
    // User SSL
    props.put("mail.imap.socketFactory" , 993);
    props.put("mail.imap.socketFactory.class" , "javax.net.ssl.SSLSocketFactory" );
    props.put("mail.imap.port" , 993 );
    Session session = Session.getDefaultInstance(props , new Authenticator() {
        @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication("username" , "password");
        }
    });

    try {
      Store store = session.getStore("imap");
      store.connect("imap.gmail.com" , "username" , "password");
      Folder fldr = store.getFolder("Inbox");
      fldr.open(Folder.READ_ONLY);
      Message msgs[] = fldr.getMessages();
        for(int i = 0 ; i < msgs.length ; i++) {
            System.out.println(msgs[i].getFrom() + "<-- FROM" + " " + msgs[i].getSubject() + "<---Subject");
        }
    } catch(Exception exc) {

    }
}

The output is :

[Ljavax.mail.internet.InternetAddress;@1462851<-- FROMGet Gmail on your mobile phone<---Subject
[Ljavax.mail.internet.InternetAddress;@bdab91<-- FROMImport your contacts and old email<---Subject
[Ljavax.mail.internet.InternetAddress;@4ac00c<-- FROMCustomize Gmail with colors and themes<---Subject
[Ljavax.mail.internet.InternetAddress;@1865b28<-- FROMtester<---Subject

What form it is?(@1462851) I want the email address of sender to appear instead of @1462851.How can i do this ?

回答1:

The getForm() returns an object. To have it printed as a plain string, please try InternetAddress.toString(msgs[i].getFrom()) in your System.out.

回答2:

You should use msgs[i].getFrom().getAddress(). What you see is the toString result of InternetAddress object (class name + hashcode)

回答3:

I've spent some hard minutes before I found out this simple code:

System.out.println("received from "+((InternetAddress)((Address)(message.getFrom()[0]))).getAddress());

回答4:

The reason for this is because you just print out the InternetAddress instance, which does not have a toString() method. Then it defaults to the Object.toString() which is primarily useful to see if objects are different.

Consider explicitly picking out the field you want to see in your print statement.

来源：https://stackoverflow.com/questions/6806449/printing-out-the-email-address-of-sender-from-internetaddress

标签

java

gmail

javamail

gmail-imap