发邮件时终于可以通过sina的smtp验证了（附代码）-JSP教程,邮件相关

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;

public class sendmail
{
    public static void main(string args[]) throws exception
    {

        string host = "smtp.sina.com.cn";
        string from =  "javamail@sina.com";
        string to = "javamail@china.com";
        string username = "javamail";
        string password = "password";

        // get system properties
        // properties props = system.getproperties(); 很多例子中是这样的，其实下面这句更好，可以用在applet中
        properties props = new properties();

        // setup mail server
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.auth", "true"); //这样才能通过验证

        // get session
        session session = session.getdefaultinstance(props);

        // watch the mail commands go by to the mail server
        session.setdebug(true);

        // define message
        mimemessage message = new mimemessage(session);
        message.setfrom(new internetaddress(from));
        message.addrecipient(message.recipienttype.to,
          new internetaddress(to));
        message.setsubject("hello javamail");
        message.settext("welcome to javamail");

        // send message
        message.savechanges();
        transport transport = session.gettransport("smtp");
        transport.connect(host, username, password);
        transport.sendmessage(message, message.getallrecipients());
        transport.close();
    }
}