Java的邮件发送、接收以及删除

import java.util.Properties;
import javax.mail.Address;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class TestMail {
    public static void main(String[] args)
    {
            TestMail.sendMail();
//            //TestMail.receiveMail();
//            TestMail.deleteMail();
    }
     
    /**
     * send mail
     */
    public static void sendMail()
    {
        String host = "smtp.163.com";//邮件服务器
        String from = "[email protected]";//发件人地址
        String to = "[email protected]";//接受地址（必须支持pop3协议）
        String userName = "snail_zhou";//发件人邮件名称
        String pwd = "*************";//发件人邮件密码
        Properties props = new Properties();
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.auth", "true");
         
        Session session = Session.getDefaultInstance(props);
        session.setDebug(true);
         
        MimeMessage msg = new MimeMessage(session);
        try {
            msg.setFrom(new InternetAddress(from));
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));//发送
            msg.setSubject("我的测试...........");//邮件主题
            msg.setText("测试内容。。。。。。。");//邮件内容
            msg.saveChanges();
             
            Transport transport = session.getTransport("smtp");
            transport.connect(host, userName, pwd);//邮件服务器验证
            transport.sendMessage(msg, msg.getRecipients(Message.RecipientType.TO));
            System.out.println("send ok...........................");
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
     
    /**
     * receive mail
     */
    public static void receiveMail()
    {
        String host = "pop3.sina.com";
        String userName = "xingui5624";
        String passWord = "******";
         
        Properties props = new Properties();
        Session session = Session.getDefaultInstance(props);
        session.setDebug(true);
        try {
            System.out.println("receive...............................");
            Store store = session.getStore("pop3");
            store.connect(host, userName,passWord);//验证
            Folder folder = store.getFolder("INBOX");//取得收件文件夹
            folder.open(Folder.READ_WRITE);
            Message msg[] = folder.getMessages();
            System.out.println("邮件个数:" + msg.length);
             
            for(int i=0; i<msg.length; i++)
            {
                Message message = msg[i];
                Address address[] = message.getFrom();
                StringBuffer from = new StringBuffer();
                /**
                 * 此for循环是我项目测试用的
                 */
                for(int j=0; j<address.length; j++)
                {
                    if (j > 0)
                        from.append(";");
                    from.append(address[j].toString());
                }
                System.out.println(message.getMessageNumber());
                System.out.println("来自：" + from.toString());
                System.out.println("大小：" + message.getSize());
                System.out.println("主题：" + message.getSubject());
                System.out.println("时间：：" + message.getSentDate());
                System.out.println("===================================================");
            }
            folder.close(true);//设置关闭
            store.close();
            System.out.println("receive over............................");
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
     
    /**
     * delete mail
     */
    public static void deleteMail()
    {
        String host = "pop3.sina.com";
        String userName = "xingui5624";
        String passWord = "******";
         
        Properties props = new Properties();
        //Properties props = System.getProperties();这种方法创建 Porperties 同上
        Session session = Session.getDefaultInstance(props);
        session.setDebug(true);
        try {
            System.out.println("begin delete ...........");
            Store store = session.getStore("pop3");
            store.connect(host, userName, passWord);//验证邮箱
            Folder folder = store.getFolder("INBOX");
            folder.open(Folder.READ_WRITE);//设置我读写方式打开
            int countOfAll = folder.getMessageCount();//取得邮件个数
            int unReadCount = folder.getUnreadMessageCount();//已读个数
            int newOfCount = folder.getNewMessageCount();//未读个数
            System.out.println("总个数：" +countOfAll);
            System.out.println("已读个数：" +unReadCount);
            System.out.println("未读个数：" +newOfCount);
            for(int i=1; i<=countOfAll; i++)
            {
                Message message = folder.getMessage(i);
                message.setFlag(Flags.Flag.DELETED, true);//设置已删除状态为true
                if(message.isSet(Flags.Flag.DELETED))
                    System.out.println("已经删除第"+i+"邮件。。。。。。。。。");
            }
            folder.close(true);
            store.close();
            System.out.println("delete ok.................................");
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
     
    /**
     * reply mail
     */
    public static void replyMail()
    {
        //test
    }
     
}