javaMail 邮件发送和接收

package com.csair.email;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
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; 
/**
 * javaMail对邮件发送和接收操作
 * @author Administrator
 * @data Mar 28, 2012
 */
public class TestMail { 

    public static void main(String[] args) 
    { 
//        TestMail.sendMail(); 
        TestMail.receiveMail(); 
//        TestMail.deleteMail(); 
    } 
    
    /**
     * 发送邮件,注意userName名称要和from保持一致，要不然验证会失败。
     * session.setDebug(true);最好开启模式，可以看到具体的流程和过程，如果有错误，也可以知道为什么错了。
     */
    public static void sendMail() 
    { 
    	String host = "smtp.163.com";//邮件服务器 
        String from = "***@163.com";//发件人地址 
        String to = "[e-mail]";//接受地址（必须支持pop3协议） 
        String userName = "***";//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); //debug模式
         
        MimeMessage msg = new MimeMessage(session); 
        try { 
            try {
				msg.setFrom(new InternetAddress(from,"中国南方航空"));
			} catch (UnsupportedEncodingException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} 
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));//发送 
            msg.setSubject("中国南方航空-南航官网订票");//邮件主题 
            msg.setText("http://www.csair.com 南航官网订票更轻松，更快捷，更安全。");//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("发送成功~");
        } catch (AddressException e) { 
            e.printStackTrace(); 
        } catch (MessagingException e) { 
            e.printStackTrace(); 
        } 
    } 
     
    /**
     * 接收电子邮件
     * 如果验证不通过，可能原因是没有开启userName对应的pop3功能
     * 如果不会设置，请参考这里http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=166
     */
    public static void receiveMail() 
    { 
        String host = "pop3.163.com"; 
        String userName = "***@163.com"; 
        String passWord = ""; 
         
        Properties props = new Properties(); 
        Session session = Session.getDefaultInstance(props); 
        session.setDebug(true); 
        try { 
            System.out.println("--------------接收开始--------------"); 
            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("");
                System.out.println("开始读取第"+i+"封邮件信息");
//                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());
                try {
					System.out.println("内容："+ message.getContent());
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
            } 
            folder.close(true);//设置关闭 
            store.close(); 
            System.out.println("--------------接收完毕--------------"); 
        } catch (NoSuchProviderException e) { 
            e.printStackTrace(); 
        } catch (MessagingException e) { 
            e.printStackTrace(); 
        } 
    } 
     
   /**
    * 删除邮件
    */ 
    public static void deleteMail() 
    { 
        String host = "pop3.sina.com"; 
        String userName = "***@sina.com"; 
        String passWord = "***"; 
         
        Properties props = new Properties(); 
        Session session = Session.getDefaultInstance(props); 
        session.setDebug(true); 
        try { 
            System.out.println("------------开始删除------------"); 
            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("------------删除完成------------"); 
        } catch (NoSuchProviderException e) { 
            e.printStackTrace(); 
        } catch (MessagingException e) { 
            e.printStackTrace(); 
        } 
    } 
}