一个简单的javamail例子

下面是别人的例子,经测试可以通过
依赖jar包javamail-1_3_1.jar,activation.jar
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package mail;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class Test{
    // 邮箱服务器
    private String host = "smtp.163.com";
    // 这个是你的邮箱用户名
    private String username = "username";
    // 你的邮箱密码
    private String password = "password ";
    
    private String mail_head_name = "this is head of this mail";

    private String mail_head_value = "this is head of this mail";

    private String mail_to = "[email protected]";

    private String mail_from = "[email protected]";

    private String mail_subject = "this is the subject of this test mail";

    private String mail_body = "this is the mail_body of this test mail";

    private String personalName = "personalName ";

    public Test(){}

    /**
     * 此段代码用来发送普通电子邮件
     */
    public void send() throws Exception{
        try{
        	Properties props=new Properties();
        	Authenticator auth = new Email_Autherticator(); // 进行邮件服务器用户认证
            props.put("mail.smtp.host", host);
            props.put("mail.smtp.auth", "true");
            Session session = Session.getDefaultInstance(props, auth);
            //设置session,和邮件服务器进行通讯。
            MimeMessage message = new MimeMessage(session);
            //message.setContent("foobar, "application/x-foobar"); // 设置邮件格式
            message.setSubject(mail_subject); // 设置邮件主题
            message.setText(mail_body); // 设置邮件正文
            message.setHeader(mail_head_name, mail_head_value); // 设置邮件标题
            
            message.setSentDate(new Date()); // 设置邮件发送日期
            Address address = new InternetAddress(mail_from, personalName);
            message.setFrom(address); // 设置邮件发送者的地址
            Address toAddress = new InternetAddress(mail_to); // 设置邮件接收方的地址
            message.addRecipient(Message.RecipientType.TO, toAddress);
            Transport.send(message); // 发送邮件
            System.out.println("send success!");
        }catch (Exception ex){
            ex.printStackTrace();
            throw new Exception(ex.getMessage());
        }
    }

    /**
     * 用来进行服务器对用户的认证
     */
    public class Email_Autherticator extends Authenticator{
        public Email_Autherticator(){
            super();
        }

        public Email_Autherticator(String user, String pwd){
            super();
            username = user;
            password = pwd;
        }

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

    public static void main(String[] args){
        Test sendmail = new Test();
        try{
            sendmail.send();
        }catch (Exception ex){
        	ex.printStackTrace();
        }
    }

}