package book.email;

import java.util.Date;

import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
 * 發送郵件給多個接收者、抄送郵件
 */
public class MultiMailsender {

	/**
	 * 發送郵件給多個接收者
	 * @param mailInfo	帶發送郵件的信息
	 * @return
	 */
	public static boolean sendMailtoMultiReceiver(MultiMailSenderInfo mailInfo){
		MyAuthenticator authenticator = null;
		if (mailInfo.isValidate()) {
			authenticator = new MyAuthenticator(mailInfo.getUserName(),
					mailInfo.getPassword());
		}
		Session sendMailSession = Session.getInstance(mailInfo
				.getProperties(), authenticator);
		try {
			Message mailMessage = new MimeMessage(sendMailSession);
			// 創建郵件發送者地址
			Address from = new InternetAddress(mailInfo.getFromAddress());
			mailMessage.setFrom(from);
			// 創建郵件的接收者地址，并設置到郵件消息中
			Address[] tos = null;
			String[] receivers = mailInfo.getReceivers();
			if (receivers != null){
				// 為每個郵件接收者創建一個地址
				tos = new InternetAddress[receivers.length + 1];
				tos[0] = new InternetAddress(mailInfo.getToAddress());
				for (int i=0; i<receivers.length; i++){
					tos[i+1] = new InternetAddress(receivers[i]);
				}
			} else {
				tos = new InternetAddress[1];
				tos[0] = new InternetAddress(mailInfo.getToAddress());
			}
			// 將所有接收者地址都添加到郵件接收者屬性中
			mailMessage.setRecipients(Message.RecipientType.TO, tos);
			
			mailMessage.setSubject(mailInfo.getSubject());
			mailMessage.setSentDate(new Date());
			// 設置郵件內容
			Multipart mainPart = new MimeMultipart();
			BodyPart html = new MimeBodyPart();
			html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
			mainPart.addBodyPart(html);
			mailMessage.setContent(mainPart);
			// 發送郵件
			Transport.send(mailMessage);
			return true;
		} catch (MessagingException ex) {
			ex.printStackTrace();
		}
		return false;
	}
	
	/**
	 * 發送帶抄送的郵件
	 * @param mailInfo	待發送郵件的消息
	 * @return
	 */
	public static boolean sendMailtoMultiCC(MultiMailSenderInfo mailInfo){
		MyAuthenticator authenticator = null;
		if (mailInfo.isValidate()) {
			authenticator = new MyAuthenticator(mailInfo.getUserName(),
					mailInfo.getPassword());
		}
		Session sendMailSession = Session.getInstance(mailInfo
				.getProperties(), authenticator);
		try {
			Message mailMessage = new MimeMessage(sendMailSession);
			// 創建郵件發送者地址
			Address from = new InternetAddress(mailInfo.getFromAddress());
			mailMessage.setFrom(from);
			// 創建郵件的接收者地址，并設置到郵件消息中
			Address to = new InternetAddress(mailInfo.getToAddress());
			mailMessage.setRecipient(Message.RecipientType.TO, to);
			
			// 獲取抄送者信息
			String[] ccs = mailInfo.getCcs();
			if (ccs != null){
				// 為每個郵件接收者創建一個地址
				Address[] ccAdresses = new InternetAddress[ccs.length];
				for (int i=0; i<ccs.length; i++){
					ccAdresses[i] = new InternetAddress(ccs[i]);
				}
				// 將抄送者信息設置到郵件信息中，注意類型為Message.RecipientType.CC
				mailMessage.setRecipients(Message.RecipientType.CC, ccAdresses);
			} 
			
			mailMessage.setSubject(mailInfo.getSubject());
			mailMessage.setSentDate(new Date());
			// 設置郵件內容
			Multipart mainPart = new MimeMultipart();
			BodyPart html = new MimeBodyPart();
			html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
			mainPart.addBodyPart(html);
			mailMessage.setContent(mainPart);
			// 發送郵件
			Transport.send(mailMessage);
			return true;
		} catch (MessagingException ex) {
			ex.printStackTrace();
		}
		return false;
	}

	public static void main(String[] args) {
		// 創建郵件信息
		MultiMailSenderInfo mailInfo = new MultiMailSenderInfo();
		mailInfo.setMailServerHost("smtp.sina.com.cn");
		mailInfo.setMailServerPort("25");
		mailInfo.setValidate(true);
		mailInfo.setUserName("***");
		mailInfo.setPassword("***");
		mailInfo.setFromAddress("***@sina.com");
		mailInfo.setToAddress("***@163.com");
		mailInfo.setSubject("MyMail測試");
		mailInfo.setContent("我的郵件測試\n\rMy test mail\n\r");

		String[] receivers = new String[]{"***@163.com", "***@tom.com"};
		String[] ccs = receivers;
		mailInfo.setReceivers(receivers);
		mailInfo.setCcs(ccs);
		
		MultiMailsender.sendMailtoMultiReceiver(mailInfo);
		MultiMailsender.sendMailtoMultiCC(mailInfo);
	}
	
	/**
	 * 發送多接收者類型郵件的基本信息
	 */
	public static class MultiMailSenderInfo extends MailSenderInfo{
		// 郵件的接收者，可以有多個
		private String[] receivers;
		// 郵件的抄送者，可以有多個
		private String[] ccs;
		
		public String[] getCcs() {
			return ccs;
		}
		public void setCcs(String[] ccs) {
			this.ccs = ccs;
		}
		public String[] getReceivers() {
			return receivers;
		}
		public void setReceivers(String[] receivers) {
			this.receivers = receivers;
		}
	}
}