import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.Date;
import javax.activation.*;
import java.io.*;
public class Mail
{
// 21-30行把本程序所用變量進(jìn)行定義。 具體在main中對(duì)它們賦植。
private MimeMessage mimeMsg; // MIME郵件對(duì)象
private Session session; // 郵件會(huì)話對(duì)象
private Properties props; // 系統(tǒng)屬性
private boolean needAuth = false; // smtp是否需要認(rèn)證
private String username = ""; // smtp認(rèn)證用戶名和密碼
private String password = "";
private Multipart mp; // Multipart對(duì)象,郵件內(nèi)容,標(biāo)題,附件等內(nèi)容均添加到其中后再生成//MimeMessage對(duì)象
public Mail(String smtp)
{
  setSmtpHost(smtp);
  createMimeMessage();
}
/**
  * 
  * 
  * 
  * @param hostName
  *            String
  * 
  * 
  * 
  */
public void setSmtpHost(String hostName)
{
  System.out.println("設(shè)置系統(tǒng)屬性：mail.smtp.host = " + hostName);
  if (props == null)
   props = System.getProperties(); // 獲得系統(tǒng)屬性對(duì)象
  props.put("mail.smtp.host", hostName); // 設(shè)置SMTP主機(jī)
}
/**
  * 
  * 
  * 
  * @return boolean
  * 
  * 
  * 
  */
public boolean createMimeMessage()
{
  try {
   System.out.println("準(zhǔn)備獲取郵件會(huì)話對(duì)象！");
   session = Session.getDefaultInstance(props, null); // 獲得郵件會(huì)話對(duì)象
  }
  catch (Exception e)
  {
   System.err.println("獲取郵件會(huì)話對(duì)象時(shí)發(fā)生錯(cuò)誤！" + e);
   return false;
  }
  System.out.println("準(zhǔn)備創(chuàng)建MIME郵件對(duì)象！");
  try {
   mimeMsg = new MimeMessage(session); // 創(chuàng)建MIME郵件對(duì)象
   mp = new MimeMultipart(); // mp 一個(gè)multipart對(duì)象
   // Multipart is a container that holds multiple body parts.
   return true;
  }
  catch (Exception e)
  {
   System.err.println("創(chuàng)建MIME郵件對(duì)象失?。?quot; + e);
   return false;
  }
}
/**
  * 
  * 
  * 
  * @param need
  *            boolean
  * 
  * 
  * 
  */
public void setNeedAuth(boolean need) {
  System.out.println("設(shè)置smtp身份認(rèn)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)
{
  System.out.println("程序得到用戶名與密碼");
  username = name;
  password = pass;
}
/**
  * 
  * 
  * 
  * @param mailSubject
  *            String
  * 
  * 
  * 
  * @return boolean
  * 
  * 
  * 
  */
public boolean setSubject(String mailSubject) {
  System.out.println("設(shè)置郵件主題！");
  try {
   mimeMsg.setSubject(mailSubject);
   return true;
  }
  catch (Exception e) {
   System.err.println("設(shè)置郵件主題發(fā)生錯(cuò)誤！");
   return false;
  }
}
/**
  * 
  * 
  * 
  * @param mailBody
  *            String
  * 
  * 
  * 
  */
public boolean setBody(String mailBody)
{
  try
  {
   System.out.println("設(shè)置郵件體格式");
   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(shè)置郵件正文時(shí)發(fā)生錯(cuò)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(fā)生錯(cuò)誤！" + e);
   return false;
  }
}
/**
  * 
  * 
  * 
  * @param name
  *            String
  * 
  * 
  * 
  * @param pass
  *            String
  * 
  * 
  * 
  */
public boolean setFrom(String from) {
  System.out.println("設(shè)置發(fā)信人！");
  try {
   mimeMsg.setFrom(new InternetAddress(from)); // 設(shè)置發(fā)信人
   return true;
  }
  catch (Exception e)
  {
   return false;
  }
}
/**
  * 
  * 
  * 
  * @param name
  *            String
  * 
  * 
  * 
  * @param pass
  *            String
  * 
  * 
  * 
  */
public boolean setTo(String to)
{
  System.out.println("設(shè)置收信人");
  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)
{
  System.out.println("發(fā)送附件到");
  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(fā)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(fā)送郵件成功！");
   transport.close();
   return true;
  }
  catch (Exception e)
  {
   System.err.println("郵件發(fā)送失??！" + e);
   return false;
  }
}
/**
  * 
  * 
  * 
  * Just do it as this
  * 
  * 
  * 
  */
public static void main(String[] args)
{
  String mailbody = "http://www.laabc.com 用戶郵件注冊(cè)測試 <font color=red>歡迎光臨</font> <a href=\"http://www.laabc.com\">啦ABC</a>";
  Mail themail = new Mail("smtp.126.com");
  themail.setNeedAuth(true);
  if (themail.setSubject("laabc.com郵件測試") == false)
   return;
  //郵件內(nèi)容 支持html 如 <font color=red>歡迎光臨</font> <a href=\"http://www.laabc.com\">啦ABC</a>
  if (themail.setBody(mailbody) == false)
   return;
  //收件人郵箱
  if (themail.setTo("shengshuai@126.com") == false)
   return;
  //發(fā)件人郵箱
  if (themail.setFrom("shengshuai@126.com") == false)
   return;
  //設(shè)置附件
  //if (themail.addFileAffix("#######") == false)
   //return; // 附件在本地機(jī)子上的絕對(duì)路徑
  themail.setNamePass("用戶名", "密碼"); // 用戶名與密碼
  if (themail.sendout() == false)
   return;
}
}