javamail

public class SendMail {
 private MimeMessage mimeMsg; // MIME郵件對象
 private Session session; // 郵件會話對象
 private Properties props; // ϵͳ系統屬性
 private String username = ""; // smtp认证用户名和密码
 private String password = "";
 private Multipart mp; // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象

 public SendMail(String smtp) {
  setSmtpHost(smtp);
  createMimeMessage();
 }

 public void setSmtpHost(String hostName) {
  System.out.println("设置系统属性mail.smtp.host = " + hostName);
  if (props == null)
   props = System.getProperties(); // 获得系统属性对象
  props.put("mail.smtp.starttls.enable", "true"); // added this line
  props.setProperty("mail.smtp.socketFactory.class",
    "javax.net.ssl.SSLSocketFactory");
  props.setProperty("mail.smtp.socketFactory.fallback", "false");
  props.setProperty("mail.smtp.port", "465");
  props.setProperty("mail.smtp.socketFactory.port", "465");
  props.put("mail.smtp.host", hostName); // 設置smtp主機
 }

 public boolean createMimeMessage() {
  try {
   // System.out.println("准备获取邮件会话对象");
   session = Session.getDefaultInstance(props, null); // 獲得郵件會話對象
  } catch (Exception e) {
   System.err.println("获取邮件会话对象时发生错误！" + e);
   return false;
  }
  // System.out.println("׼准备创建MIME邮件对象！");
  try {
   mimeMsg = new MimeMessage(session); // 创建MIME邮件对象
   mp = new MimeMultipart();
   return true;
  } catch (Exception e) {
   System.err.println("创建MIME邮件对象失败！" + e);
   return false;
  }
 }

 public void setNeedAuth(boolean need) {
  System.out.println("设置smtp身份认证：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");
  }
 }

 public void setNamePass(String name, String pass) {
  username = name;
  password = pass;
 }

 public boolean setSubject(String mailSubject) {
  System.out.println("设置邮件主题");
  try {
   mimeMsg.setSubject(mailSubject);
   return true;
  } catch (Exception e) {
   System.err.println("设置邮件主题发生错误");
   return false;
  }
 }

 public boolean setBody(String mailBody) {
  try {
   BodyPart bp = new MimeBodyPart();
   bp.setContent("" + mailBody, "text/html;charset=GB2312");
   mp.addBodyPart(bp);
   return true;
  } catch (Exception e) {
   System.err.println("设置邮件正文发生错误" + e);
   return false;
  }
 }

 public boolean addFileAffix(String filename) {
  System.out.println("添加邮件附件" + filename);
  sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
  try {
   BodyPart bp = new MimeBodyPart();
   FileDataSource fileds = new FileDataSource(filename);
   bp.setDataHandler(new DataHandler(fileds));
   bp.setFileName("=?GB2312?B?"
     + enc.encode(fileds.getName().getBytes()) + "?=");
   mp.addBodyPart(bp);
   return true;
  } catch (Exception e) {
   System.err.println("添加邮件附件" + filename + "发生错误" + e);
   return false;
  }
 }

 public boolean setFrom(String from) {
  System.out.println("设置发件人");
  try {
   mimeMsg.setFrom(new InternetAddress(from)); // 设置发件人
   return true;
  } catch (Exception e) {
   return false;
  }
 }

 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;
  }
 }

 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;
  }
 }

 public boolean sendout() {
  try {
   mimeMsg.setContent(mp);
   mimeMsg.saveChanges();
   System.out.println("正在发送邮件....");
   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("邮件发送成功！");
   transport.close();
   return true;
  } catch (Exception e) {
   System.err.println("邮件发送失败！" + e);
   return false;
  }
 }

//自己定义的方法  (读.properties文件用ResourceBundel)

 public void isEmail(String filePath) throws IOException {
  ResourceBundle rb = ResourceBundle.getBundle("属性文件的名称");
  String userName = rb.getString("email.to");
  String title = rb.getString("email.subject");
  String content = rb.getString("email.content");
  String receiveAddress = null;
  if (!userName.contentEquals("")) {
   if (userName.contains(",")) {
    String address[] = userName.split(",");
    for (int j = 0; j < address.length; j++) {
     receiveAddress = address[j];
     test(receiveAddress, filePath, title, content);
    }
   } else {
    receiveAddress = userName;
    test(receiveAddress, filePath, title, content);
   }
  }
 }

 public void test(String receiveAddress, String filePath, String title,
   String content) {
  SendMail themail = new SendMail("smtp.根据不同的邮箱而定.com");
  themail.setNeedAuth(true);
  if (themail.setSubject(title) == false)
   return;
  if (themail.setBody(content) == false)
   return;
  if (themail.setTo(receiveAddress) == false)
   return;
  if (themail.setFrom("发件人邮箱地址") == false)
   return;
  if (themail.addFileAffix(filePath) == false)
   return;
  themail.setNamePass("发件人邮箱地址", "密码");
  if (themail.sendout() == false)
   return;
 }