import java.io.File;  import java.util.Date;    import javax.activation.DataHandler;  import javax.activation.FileDataSource;  import javax.mail.Address;  import javax.mail.BodyPart;  import javax.mail.Message;  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;  import javax.mail.internet.MimeUtility;    /**   * 发送带附件的邮件   *    * 需要导入mail.jar   */  public class AttachmentMailSender {     public static boolean sendMail(MailSenderInfo mailInfo) {    // 判断是否需要身份认证    MyAuthenticator authenticator = null;    if (mailInfo.isValidate()) {     // 如果需要身份认证，则创建一个密码验证器     authenticator = new MyAuthenticator(mailInfo.getUserName(),       mailInfo.getPassword());    }    // 根据邮件发送的属性和密码验证器构造一个发送邮件的session    Session sendMailSession = Session.getInstance(mailInfo.getProperties(),      authenticator);    try {     // 根据session创建一个邮件消息     Message mailMessage = new MimeMessage(sendMailSession);     // 创建邮件发送者地址     Address from = new InternetAddress(mailInfo.getFromAddress());     // 设置邮件消息的发送者     mailMessage.setFrom(from);     // 创建邮件的接收者地址，并设置到邮件消息中     Address to = new InternetAddress(mailInfo.getToAddress());     mailMessage.setRecipient(Message.RecipientType.TO, to);     // 设置邮件消息的主题     mailMessage.setSubject(mailInfo.getSubject());     // 设置邮件消息发送的时间     mailMessage.setSentDate(new Date());       // MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象     Multipart mainPart = new MimeMultipart();     // 创建一个包含HTML内容的MimeBodyPart     BodyPart html = new MimeBodyPart();     // 设置HTML内容     html.setContent(mailInfo.getContent(), "text/html; charset=GBK");     mainPart.addBodyPart(html);     // 为邮件添加附件     String[] attachFileNames = mailInfo.getAttachFileNames();     if (attachFileNames != null && attachFileNames.length > 0) {      // 存放邮件附件的MimeBodyPart      MimeBodyPart attachment = null;      File file = null;      for (int i = 0; i < attachFileNames.length; i++) {       attachment = new MimeBodyPart();       // 根据附件文件创建文件数据源       file = new File(attachFileNames[i]);       FileDataSource fds = new FileDataSource(file);       attachment.setDataHandler(new DataHandler(fds));       // 为附件设置文件名       attachment.setFileName(MimeUtility.encodeWord(         file.getName(), "GBK", null));       mainPart.addBodyPart(attachment);      }     }     // 将MiniMultipart对象设置为邮件内容     mailMessage.setContent(mainPart);     // 发送邮件     Transport.send(mailMessage);     return true;      } catch (Exception e) {     e.printStackTrace();     return false;    }   }     public static void main(String[] args) {    // 创建邮件信息    MailSenderInfo mailInfo = new MailSenderInfo();    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测试");    mailInfo.setContent("我的邮件测试\n\rMy test mail\n\r");      String[] fileNames = new String[3];    fileNames[0] = "C:/temp/new.txt";    fileNames[1] = "C:/temp/test.wav";    fileNames[2] = "C:/temp/mary_photo.jpg";    mailInfo.setAttachFileNames(fileNames);      AttachmentMailSender.sendMail(mailInfo);   }  }