mailservlet.java

这是我们老师的做的,挺不错的,要下载的话可以下载来

package mail;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.Message.RecipientType;
import javax.mail.internet.MimeMessage;
import javax.mail.Session;
import javax.mail.MessagingException;

public class MailServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GB18030";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {

      response.setContentType(CONTENT_TYPE) ;
      PrintWriter out = response.getWriter() ;

      //发件人使用发邮件的电子信箱服务器
      String host = "smtp.sina.com";

      //发邮件的出发地（发件人的信箱）
      String from = "[e-mail]";

      //发邮件的目的地（收件人信箱）
      String to = "[e-mail]";
    try
    {
        // 返回Properties对象
        Properties props = System.getProperties();

        // 设置邮件服务器的连接协议
        props.put("mail.smtp.host", host);

        // 设置认证
        props.put("mail.smtp.auth", "true");

        //传递认证的参数
        MyAuthenticator myauth = new MyAuthenticator("[e-mail]", "123456");

        //获得session对象，
        Session session = Session.getDefaultInstance(props, myauth);

        //传递参数，生成message对象。
        MimeMessage message = new MimeMessage(session);

        // 设置发件人的地址
        message.setFrom(new InternetAddress(from));

        // 设置收件人的地址以及接收的方式
        /*下面是Message.RecipientType的三个常量:
          Message.RecipientType.TO  接收
          Message.RecipientType.CC  抄送
          Message.RecipientType.BCC 密送
        */
        message.addRecipient(RecipientType.TO,new InternetAddress(to));

        // 设置主题
        message.setSubject("第四个测试程序");

        // 设置内容
        message.setText("这是用java写的发送电子邮件的测试程序！");

        //保存修改
        message.saveChanges()  ;

        //发送信息
        Transport.send(message);

        out.print("发送成功") ;

     }
     catch(Exception e)
     {
        System.out.println(e) ;

     }


  }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        try {
            doGet(request, response);
        }catch (Exception ex)
        {
            System.out.println(ex) ;
        }
    }

    //Clean up resources
    public void destroy() {
    }
}