Java mail 接收/删除邮件

import javax.mail.Store;
import javax.mail.FetchProfile;
import java.util.Properties;
import javax.mail.Session;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.internet.InternetAddress;

public class Semail {
public static void main(String[] args) {
try {

Properties props = new Properties();
Session s = Session.getInstance(props);
Store store = s.getStore("pop3");
store.connect("pop.163.com", "bluebit_cn", "xiaohao");

Folder folder = store.getFolder("Inbox");
folder.open(Folder.READ_WRITE);

FetchProfile profile = new FetchProfile();
profile.add(FetchProfile.Item.ENVELOPE);
Message arraymessage[] = folder.getMessages();
folder.fetch(arraymessage, profile);

System.out.println("收件箱的邮件数：" + arraymessage.length);
for (int i = 0; i < arraymessage.length; i++) {
//邮件发送者
String from = arraymessage.getFrom()[0].toString();
InternetAddress ia = new InternetAddress(from);
System.out.println("FROM:" + ia.getPersonal() + '(' +
ia.getAddress() + ')');
//邮件标题
System.out.println("TITLE:" + arraymessage.getSubject());
//邮件大小
System.out.println("SIZE:" + arraymessage.getSize());
//邮件发送时间
System.out.println("DATE:" + arraymessage.getSentDate());
}

folder.close(false);
store.close();
} catch (Exception ee) {
ee.printStackTrace();
}
}
}

==删除=====================
Question How do you delete a message from the mail server?
Derived from An unanswered question originally posed by Benjamin Alejandro Rodriguez Rengifo
Topics Java:API:JavaMail:IMAP4, Java:API:JavaMail:POP3
Author John Zukowski
Created 23-Feb-00 Modified 25-Jul-00

Answer

The basic process of deleting a message is to call setFlag() on the message and set the Flags.Flag.DeleteD flag to true.

message.setFlag(Flags.Flag.DeleteD, true);

Then, when you close the folder, deleted messages will be removed.

Be sure to open the folder for read/write access:

folder.open(Folder.READ_WRITE);

The following program demonstrates listing each message in the folder and prompting for deletion:

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

public class DeleteMessageExample {
public static void main (String args[]) throws Exception {
String host = args[0];
String username = args[1];
String password = args[2];

// Get session
Session session = Session.getInstance(
System.getProperties(), null);

// Get the store
Store store = session.getStore("pop3");
store.connect(host, username, password);

// Get folder
Folder folder = store.getFolder("INBOX");
folder.open(Folder.READ_WRITE);

BufferedReader reader = new BufferedReader (
new InputStreamReader(System.in));

// Get directory
Message message[] = folder.getMessages();
for (int i=0, n=message.length; i<n; i++) {
System.out.println(i + ": " + message.getFrom()[0]
+ "\t" + message.getSubject());

System.out.println("Do you want to delete message? [YES to delete]");
String line = reader.readLine();
// Mark as deleted if appropriate
if ("YES".equals(line)) {
message.setFlag(Flags.Flag.DeleteD, true);
}
}

// Close connection
folder.close(true);
store.close();
}
}

You can also expunge() the Folder. However, the POP3 server from Sun does not support this operation.