发送邮件

import java.util.*;

import java.io.*;

import javax.mail.*;

import javax.mail.internet.*;

import javax.activation.*;

public class SendMail {

public static void main(String[] args) {

try {

Properties p = new Properties(); //Properties p = System.getProperties();

p.put("mail.smtp.auth", "true");

p.put("mail.transport.protocol", "smtp");

p.put("mail.smtp.host", "smtp.163.com");

p.put("mail.smtp.port", "25");

//建立会话

Session session = Session.getInstance(p);

Message msg = new MimeMessage(session); //建立信息

msg.setFrom(new InternetAddress("bluebit_cn@163.com")); //发件人

msg.setRecipient(Message.RecipientType.TO,

new InternetAddress("javaonline@163.com")); //收件人

msg.setSentDate(new Date()); // 发送日期

msg.setSubject("答话稀有"); // 主题

msg.setText("快点下在"); //内容

// 邮件服务器进行验证

Transport tran = session.getTransport("smtp");

tran.connect("smtp.163.com", "bluebit_cn", "xiaohao");

// bluebit_cn是用户名，xiaohao是密码

tran.sendMessage(msg, msg.getAllRecipients()); // 发送

System.out.println("邮件发送成功");

} catch (Exception e) {

e.printStackTrace();

}

}

}

下面的话还是发送邮件的，不过是通过HTML网页来发送的

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

import java.util.*;

import javax.mail.*;

import javax.mail.internet.*;

import javax.activation.*;

public class sendMailMul extends HttpServlet {

private static final String CONTENT_TYPE = "text/html; charset=GBK";

//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();

request.setCharacterEncoding("gbk");

response.setCharacterEncoding("gbk");

String mailServer = request.getParameter("txtServer").trim();

String mailFrom = request.getParameter("txtFrom").trim();

String mailTo = request.getParameter("txtTo").trim();

String mailSubject = request.getParameter("txtSubject").trim();

String mailMessage = request.getParameter("txtMessage").trim();

String file = request.getParameter("txtAttachment").trim();

mailSubject = new String(mailSubject.getBytes("ISO-8859-1"), "gbk");

mailMessage = new String(mailMessage.getBytes("ISO-8859-1"), "gbk");

file = new String(file.getBytes("ISO-8859-1"), "gbk");

System.out.println("页面数据：");

System.out.println("mailServer:" + mailServer);

System.out.println("mailFrom:" + mailFrom);

System.out.println("mailTo:" + mailTo);

System.out.println("mailSubject:" + mailSubject);

System.out.println("mailMessage:" + mailMessage);

System.out.println("file:" + file);

Properties p = new Properties();

p.put("mail.smtp.auth", "true");

p.put("mail.transport.protocol", "smtp");

p.put("mail.smtp.host", mailServer);

p.put("mail.smtp.port", "25");

Session mailsession = Session.getInstance(p);

MimeMessage msg = new MimeMessage(mailsession);

try {

msg.setFrom(new InternetAddress(mailFrom));

msg.setRecipients(Message.RecipientType.TO,

InternetAddress.parse(mailTo));

msg.setSentDate(new Date());

msg.setSubject(mailSubject);

//设置邮件内容，作为Multipart对象的一部分

MimeBodyPart mbp = new MimeBodyPart();

mbp.setText(mailMessage);

Multipart mulp = new MimeMultipart();

mulp.addBodyPart(mbp);

//设置附件，作为Multipart对象的一部分

mbp = new MimeBodyPart();

DataSource source = new FileDataSource(file);

mbp.setDataHandler(new DataHandler(source));

mbp.setFileName(file);

mulp.addBodyPart(mbp);

//设置信息内容，将Multipart 对象加入信息中

msg.setContent(mulp);

Transport tran = mailsession.getTransport("smtp");

tran.connect(mailServer, "bluebit_cn", "xiaohao");

tran.sendMessage(msg, msg.getAllRecipients());

msg.writeTo(System.out);

out.println("邮件已经发送到<br>" + mailTo);

} catch (Exception e) {

e.printStackTrace();

}

out.close();

}

//Process the HTTP Post request

public void doPost(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

doGet(request, response);

}

//Clean up resources

public void destroy() {

}

}

http://blog.youkuaiyun.com/niunan/archive/2008/02/20/2108958.aspx