package com;


import java.util.Properties;


import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;


import com.abcchina.PopupAuthenticator;


public class Send {
public static void main(String[] args) throws Exception {
Properties props = new Properties();


String host = "smtp.ym.163.com"; // 163免費企業郵箱的smtp伺服器
String from = "

[email protected]"; // 我的企業郵箱地址
String to = "[email protected]"; // 郵件要傳送到的郵箱地址
String username = "web";
String password = "******"; //
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", host);
String content = "hello";
String subJect="這是一個好訊息1";


//認證的時候用的是 郵箱全拼 密碼   而不是使用者 密碼 這點要注意
Authenticator smtpAuth = new PopupAuthenticator(
from, password);

Session session = Session.getDefaultInstance(props, smtpAuth);
session.setDebug(true);
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
BodyPart mdp = new MimeBodyPart();
mdp.setContent(content, "text/html;charset=gb2312");
Multipart mm = new MimeMultipart();
mm.addBodyPart(mdp);
message.setContent(mm);
message.setSubject(subJect);
message.saveChanges();
Transport transport = session.getTransport("smtp");
transport.connect(host, username, password);//連結的時候用的是 使用者名稱 密碼   而不是郵箱全拼 密碼 這點要注意
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}

}

=======================================================

package com.abcchina;


import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;


public class PopupAuthenticator extends Authenticator {
 String    username=null;
      String    password=null;


      public PopupAuthenticator(){}
      
      public PopupAuthenticator(String username,String password){
     this.username=username;
     this.password=password;
      }


      public PasswordAuthentication performCheck(String user,String pass){
             username = user;
             password = pass;
             return getPasswordAuthentication();
      }


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


}

有什麼不明白的直接評論即可！！！