发邮件时终于可以通过sina的smtp验证

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();

}

}

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