WEB项目使用JavaMail 发送邮件

//下面是发送邮件的工具类，在web项目下使用，需要再导两个包
package com.zjh.shopping.util;

import java.util.Date;  

import java.util.Properties;  
 
import javax.activation.DataHandler;  
import javax.activation.FileDataSource;  
import javax.mail.Authenticator;  
import javax.mail.Multipart;  
import javax.mail.PasswordAuthentication;  
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeBodyPart;  
import javax.mail.internet.MimeMultipart;  
import javax.mail.internet.MimeUtility;  
 
 
public class JavaMailSendUtil {  
 
    
   public  void sendmail(String subject, String from,String[] to,  
           String text, String[] filenames, String mimeType) { 
       try {  
           Properties props = new Properties();  
 
           String smtp = "smtp.163.com"; // 设置发送邮件所用到的smtp 
           String servername = "*******";  //邮箱账号名
           String serverpaswd = "******";  //邮箱密码
 
           javax.mail.Session mailSession = null; // 邮件会话对象 
           javax.mail.internet.MimeMessage mimeMsg = null; // MIME 邮件对象 
 
           props = java.lang.System.getProperties(); // 获得系统属性对象 
           props.put("mail.smtp.host", smtp); // 设置SMTP主机 
           props.put("mail.smtp.auth", "true"); // 是否到服务器用户名和密码验证 
           // 到服务器验证发送的用户名和密码是否正确  
           SmtpAuthenticator myEmailAuther = new SmtpAuthenticator(servername, 
                   serverpaswd);  
           // 设置邮件会话 注意这里将认证信息放进了Session的创建参数里  
           mailSession = javax.mail.Session.getInstance(props, 
                   (Authenticator) myEmailAuther);  
           // 设置传输协议  
           javax.mail.Transport transport = mailSession.getTransport("smtp"); 
          // 设置from、to等信息  
          mimeMsg = new javax.mail.internet.MimeMessage(mailSession); 
          if (null != from &&!"".equals(from)) {  
              InternetAddress sentFrom = new InternetAddress(from); 
              mimeMsg.setFrom(sentFrom); // 设置发送人地址  
          }  
 
          InternetAddress[] sendTo = new InternetAddress[to.length]; 
          for (int i = 0; i < to.length; i++) { 
              System.out.println("发送到:" + to[i]);  
              sendTo[i] = new InternetAddress(to[i]);  
          }  
 
          mimeMsg.setRecipients(  
                  javax.mail.internet.MimeMessage.RecipientType.TO, sendTo); 
          mimeMsg.setSubject(subject, "gb2312");  
 
          MimeBodyPart messageBodyPart1 = new MimeBodyPart(); 
          // messageBodyPart.setText(UnicodeToChinese(text)); 
          messageBodyPart1.setContent(text, mimeType); 
 
          // 附件传输格式  
          Multipart multipart = new MimeMultipart();  
          multipart.addBodyPart(messageBodyPart1);  
 
          for (int i = 0; i < filenames.length; i++) { 
              MimeBodyPart messageBodyPart2 = new MimeBodyPart(); 
 
              String filename = filenames[i].split(";")[0]; 
              String displayname = filenames[i].split(";")[1]; 
              // 得到数据源  
              FileDataSource fds = new FileDataSource(filename); 
              // BodyPart添加附件本身  
              messageBodyPart2.setDataHandler(new DataHandler(fds)); 
              // BodyPart添加附件文件名  
              messageBodyPart2.setFileName(MimeUtility  
                      .encodeText(displayname));  
              multipart.addBodyPart(messageBodyPart2);  
          }  
          mimeMsg.setContent(multipart);  
          // 设置信件头的发送日期  
          mimeMsg.setSentDate(new Date());  
          mimeMsg.saveChanges();  
          // 发送邮件  
          transport.send(mimeMsg);  
          transport.close();  
          System.out.println("发送到成功!!!");  
      } catch (Exception e) {  
          e.printStackTrace();  
      }  
   }  
 
    
   public static voidmain(String[] args) throws Exception {  
      String title = "测试邮件";// 所发送邮件的标题  
      String from = "************@163.com";// 从那里发送 
      String sendTo[] = { "********@qq.com" };// 发送到那里 
      // 邮件的文本内容，可以包含html标记则显示为html页面  
      String content = "test java send mail!!!!!!<br><ahref="http://sjsky.javaeye.com/">Myblog</a>";  
    // 所包含的附件，及附件的重新命名  
    String fileNames[] = { "d:\\test.jpg;test.jpg" }; 

    JavaMailSendUtil test = new JavaMailSendUtil(); 
    try {  
        // MailSender mailsender = new MailSender(); 
        test.sendmail(title, from, sendTo, content, fileNames, 
                "text/html;charset=gb2312");  
    } catch (Exception ex) {  
        ex.printStackTrace();  
    }  
 }  

   
 class SmtpAuthenticator extends Authenticator { 
    String username = null;  
    String password = null;  

     
    public SmtpAuthenticator(String username, String password) { 
        super();  
        this.username = username;  
        this.password = password;  
    }  

     
    public PasswordAuthentication getPasswordAuthentication() { 
        return new PasswordAuthentication(this.username, this.password); 
      }  
   }  
}  

注意：在 myEclipse 里面建了一个 test 的 main 函数，发送邮件可以顺利通过，但是部署到 tomcat 以后会报java.lang.NoClassDefFoundError:javax/mail/Message的错误，必须activation.jar 和 mail.jar 两个包导入进去。
这两个包的下载地址：http://d.download.csdn.net/down/1018034/vgsoft