//package mailserver;
import java.util.*; 
import javax.mail.*; 
import javax.mail.internet.*; 
import java.util.Date; 
import javax.activation.*; 
import java.io.*;
import java.security.*;

public class SendMail
{
	private MimeMessage mimeMsg; //MIME郵件對象 

	private Session session; //郵件會話對象 
	private Properties props; //系統屬性 
	private boolean needAuth = false; //smtp是否需要認證 

	private String username = ""; //smtp認證用戶名和密碼 
	private String password = "";

	private Multipart mp; //Multipart對象,郵件內容,標題,附件等內容均添加到其中后再生成MimeMessage對象 

	public SendMail(String smtp, int mailport,String user,String word)
	{
		this.username = user;
		this.password = word;
		setSmtpHost(smtp, mailport);
	}

	/** 
	* @param hostName String 
	*/
	public void setSmtpHost(String hostName,int mailport)
	{
		//System.out.println("設置系統屬性：mail.smtp.host = " + hostName);
		if (props == null)
			props = new Properties(); //獲得系統屬性對象 
		props.setProperty("mail.smtp.port", mailport+"");
		if (mailport == 465)
		{
			Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
			final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
			//Get a Properties object
			props.setProperty("mail.smtp.host", hostName);
			props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
			props.setProperty("mail.smtp.socketFactory.fallback", "false");
			//props.setProperty("mail.smtp.port", "465");
			props.setProperty("mail.smtp.socketFactory.port", "465");
		}
		props.setProperty("mail.smtp.host", hostName);
		props.put("mail.smtp.auth", "true");

		try
		{
			if (mailport == 465)
			{
				session = Session.getInstance(props, new Authenticator()
				{
					protected PasswordAuthentication getPasswordAuthentication()
					{
						return new PasswordAuthentication(username, password);
					}
				}); //獲得郵件會話對象 
			}
			else
				session = Session.getInstance(props, null);
		}
		catch (Exception e)
		{
			System.err.println("獲取郵件會話對象時發生錯誤！" + e);
		}

		//System.out.println("準備創建MIME郵件對象！");
		try
		{
			mimeMsg = new MimeMessage(session); //創建MIME郵件對象 
			mp = new MimeMultipart();
		}
		catch (Exception e)
		{
			System.err.println("創建MIME郵件對象失?。?quot; + e);
		}
	}

	/** 
* @param need boolean 
*/
	public void setNeedAuth(boolean need)
	{
		System.out.println("設置smtp身份認證：mail.smtp.auth = " + need);
		if (props == null) props = System.getProperties();

		if (need)
		{
			props.put("mail.smtp.auth", "true");
		}
		else
		{
			props.put("mail.smtp.auth", "false");
		}
	}
	/** 
* @param name String 
* @param pass String 
*/
	public void setNamePass(String name, String pass)
	{
		username = name;
		password = pass;
	}
	/** 
* @param mailSubject String 
	* @return boolean 
	*/
	public boolean setSubject(String mailSubject)
	{
		//System.out.println("設置郵件主題！");
		try
		{
			mimeMsg.setSubject(mailSubject);
			return true;
		}
		catch (Exception e)
		{
				System.err.println("設置郵件主題發生錯誤！");
				return false;
		}
	}
	/** 
* @param mailBody String 
*/
	public boolean setBody(String mailBody)
	{
		try
		{
			BodyPart bp = new MimeBodyPart();
			bp.setContent("<meta http-equiv=Content-Type content=text/html; charset=gb2312>" + mailBody, "text/html;charset=GB2312");
			mp.addBodyPart(bp);

			return true;
		}
		catch (Exception e)
		{
			System.err.println("設置郵件正文時發生錯誤！" + e);
			return false;
			}
		}
	/** 
* @param name String 
* @param pass String 
*/
	public boolean addFileAffix(String filename)
	{

		//System.out.println("增加郵件附件：" + filename);
		try
		{
			BodyPart bp = new MimeBodyPart();
			FileDataSource fileds = new FileDataSource(filename);
			bp.setDataHandler(new DataHandler(fileds));
			bp.setFileName(fileds.getName());

			mp.addBodyPart(bp);

			return true;
		}
		catch (Exception e)
		{
			System.err.println("增加郵件附件：" + filename + "發生錯誤！" + e);
			return false;
		}
	}
	/** 
* @param name String 
* @param pass String 
*/
	public boolean setFrom(String from)
	{
		try
		{
			mimeMsg.setFrom(new InternetAddress(from)); //設置發信人 
			return true;
		}
		catch (Exception e)
		{ return false; }
	}
	/** 
* @param name String 
* @param pass String
*/
	public boolean setTo(String to)
	{
		if (to == null) return false;
		try
		{
				mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
				return true;
		}
		catch (Exception e)
		{ 
			return false; 
		}
	}

	/** 
* @param name String 
* @param pass String 
*/
	public boolean setCopyTo(String copyto)
	{
		if (copyto == null) return false;
			try
		{
				mimeMsg.setRecipients(Message.RecipientType.CC, (Address[])InternetAddress.parse(copyto));
				return true;
		}
		catch (Exception e)
		{ return false; }
	}
	/** 
* @param name String 
* @param pass String 
*/
	public boolean sendout()
	{
		try
		{
			mimeMsg.setContent(mp);
			mimeMsg.saveChanges();
			//System.out.println("正在發送郵件....");

				Session mailSession = Session.getInstance(props, null);
				Transport transport = mailSession.getTransport("smtp");
			transport.connect((String)props.get("mail.smtp.host"), username, password);
			transport.sendMessage(mimeMsg, mimeMsg.getRecipients(Message.RecipientType.TO));
			//transport.send(mimeMsg); 

			//System.out.println("發送郵件成功！");
			transport.close();

			return true;
		}
		catch (Exception e)
		{
			System.err.println("郵件發送失敗！" + e);
				return false;
			}
		}


	/** 
* Just do it as this 
*/
	public static void main(String[] args)
	{
		/*

		String mailbody = "" + " ";



		SendMail themail = new SendMail("smtp.msn.com");
		themail.setNeedAuth(true);

		if (themail.setSubject("標題") == false) return;
		if (themail.setBody(mailbody) == false) return;
		if (themail.setTo("gates@msn.com") == false) return;
		if (themail.setFrom("bill@msn.com") == false) return;
		if (themail.addFileAffix("c:\\boot.ini") == false) return;
		themail.setNamePass("user", "password");

		if (themail.sendout() == false) return;
		 */
	}
}