javaMail的简单应用

import javax.mail.*;
import java.util.*;
import javax.mail.internet.*;
public class Mail_Sender {
public void send(String email,String username,String password)
{
Properties p = System.getProperties();
//设置SMTP服务器
p.setProperty("mail.smtp.host","smtp服务器");
//验证SMTP
p.put("mail.smtp.auto","true");
Session s = Session.getInstance(p);
//查看运行时信息
//s.setDebug(true);
//由邮件Session新建一个消息对象
MimeMessage mm = new MimeMessage(s);
try
{
//发件人
InternetAddress from = new InternetAddress("发件人地址");
mm.setFrom(from);

//收件人
InternetAddress to = new InternetAddress(email);
mm.setRecipient(Message.RecipientType.TO,to);

//邮件标题
mm.setSubject("标题");
String content="尊敬的用户:"+username+",您的新密码为:"+password+",请妥善保管!";

//邮件内容
mm.setContent(content,"text/html;charset=UTF-8");

//保存
mm.saveChanges();

Transport tr = s.getTransport("smtp");

//smtp验证，也就是你要用来发邮件的那个邮箱的名字密码
tr.connect("smtp服务器","用户名","密码");

//发送
tr.sendMessage(mm,mm.getAllRecipients());
tr.close();
}catch(Exception e)
{
e.printStackTrace();
}
}
}