Summary of JavaMail operations (2)

// This code is used to authenticate users on the server.
Public class Email_Autherticator extends Authenticator
{
Public Email_Autherticator ()
{
Super ();
}
Public PasswordAuthentication getPasswordAuthentication ()
{
Return new PasswordAuthentication (username, password );
}
}
// This program is used to receive emails
Void jbutton2_actionreceivmed (ActionEvent e ){
Try
{
Properties props = System. getProperties (); // Obtain System variables
Authenticator auth = new Email_Autherticator ();
Props. put ("mail. smtp. host", host );
Props. put ("mail. smtp. auth", "true ");
Session session = Session. getDefaultInstance (props, auth); // Create a session
Store store = session. getStore ("pop3 ");
Store. connect (host, username, password );
// After connecting to the Store, you can get a Folder, which must be opened before you can read messages from it:
Folder folder = store. getFolder ("INBOX"); // Obtain a Folder after you connect to the Store. The default value is INDEX.
Folder. open (Folder. READ_WRITE); // READ_ONLY indicates the open mode.
Message message [] = folder. getMessages (); // Obtain mail information from the folder
// You can obtain the email information in two ways. getContent () is used to obtain the subject information of the email. WriteTo () can be used to obtain all the mail information, including the header information.
// System. out. println (MimeMessage) message). getContent ());
For (int I = 0, n = message. length; I {
String out_from_person = (InternetAddress) message [I]. getFrom () [0]). getPersonal ();
String out_from_address = (InternetAddress) message [I]. getFrom () [0]). getAddress ();
System. out. println ("From:" + out_from_person + "");
System. out. println ("Address:" + out_from_address + "");
String out_subject = message [I]. getSubject ();
System. out. println ("Subject:" + out_subject + "");
// Use the following code to obtain the body information of an email:
Part messagePart = message [I];
Object out_content = messagePart. getContent ();
If (out_content instanceof Multipart)