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

public class JavaMailModule {
  private Session session = null;
  private Message meassage;
  private Multipart multipart;
  private StringBuffer stringBuffer;
  public static String smtpServer;
  private String sender;
  private String[] reciver;
  private String subject;
  private String content;
  private String[] paths;
  private Properties properties;

  private void setSmtpServer(String smtpServer) {
    this.smtpServer = smtpServer;
  }

  public String getSmtpServer() {
    return this.smtpServer;
  }

  private void setSender(String sender) {
    this.sender = sender;
  }

  public String getSender() {
    return this.sender;
  }

  private void setReciver(String[] reciver) {
    this.reciver = reciver;
  }

  public String[] getReciver() {
    return this.reciver;
  }

  private void setSubject(String subject) {
    this.subject = subject;
  }

  private void setContent(String content) {
    this.content = content;
  }

  private void setAttachPaths(String[] paths) {
    this.paths = paths;
  }

  public void connectionSetting(String smtpServer, boolean isDebugging) {
    setSmtpServer(smtpServer);
    properties = new Properties();
    properties.put("mail.smtp.host", this.smtpServer);
    session = Session.getDefaultInstance(properties, null);
    session.setDebug(isDebugging);
  }

  public void send(String sender, String[] reciver, String subject,
                   String content, String[] paths) {
    setSender(sender);
    setReciver(reciver);
    setSubject(subject);
    setContent(content);
    setAttachPaths(paths);

    try {
      this.meassage = new MimeMessage(session);
      InternetAddress from = new InternetAddress(this.sender);
      this.meassage.setFrom(from);
      InternetAddress[] address = null;

      if (this.reciver != null) {
        address = new InternetAddress[this.reciver.length];

        for (int i = 0; i < this.reciver.length; i++) {
          address[i] = new InternetAddress(this.reciver[i]);
        }
        this.meassage.setRecipients(Message.RecipientType.TO, address);
      }
      this.meassage.setSubject(this.subject);
      this.stringBuffer = new StringBuffer();
      this.stringBuffer.append(this.content);
      MimeBodyPart mbp1 = new MimeBodyPart();
      mbp1.setContent(new String(this.stringBuffer), "text/html;charset=Big5");
      this.multipart = new MimeMultipart();
      this.multipart.addBodyPart(mbp1);

      if (this.paths != null) {
        MimeBodyPart mbp2 = null;
        File file = null;
        FileDataSource fds = null;

        for (int i = 0; i < this.paths.length; i++) {
          mbp2 = new MimeBodyPart();
          String filename = this.paths[i];
          file = new File(this.paths[i]);

          if (file.exists()) {
            fds = new FileDataSource(file);
            mbp2.setDataHandler(new DataHandler(fds));
            mbp2.setFileName(fds.getName());
            this.multipart.addBodyPart(mbp2);
          }
        }
        file = null;
      }

      try {
        this.meassage.setContent(this.multipart);
        this.meassage.setSentDate(new Date());
        Transport.send(this.meassage);
      }
      catch (Exception ex) {
        ex.printStackTrace();
      }
    }
    catch (MessagingException mex) {
      mex.printStackTrace(System.err);
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }
}