javaMail发邮件 简单小例子

源：http://my.oschina.net/u/865478/blog/94154
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package com.mail;

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;

import com.sun.mail.smtp.SMTPMessage;

class SimpleAuthenticator extends Authenticator{
private String userName;
private String password;
public SimpleAuthenticator(String userName, String password) {
super();
this.userName = userName;
this.password = password;
}
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(this.userName, this.password);

}


}
public class SendMail {


public static void sendMail(){
String userName = "xxxx@qq.com";
String password="xxxxxxx";
String subject = "aaaaaaaaaaa"; // 邮件标题
String body = "bbbbbbbbbbbbbb"; // 邮件内容
Properties props=System.getProperties();
props.put("mail.smtp.host", "smtp.qq.com");
props.put("mail.smtp.auth","true");
// Session session=Session.getDefaultInstance(props);
Session session = Session.getDefaultInstance(props,new SimpleAuthenticator(userName, password) );
SMTPMessage message=new SMTPMessage(session);
try {
message.setRecipient(Message.RecipientType.TO,new InternetAddress("2222222@qq.com"));//收件人
message.setSubject(subject);
message.setText(body);
message.setFrom(new InternetAddress("523199766@qq.com"));//设置发件人 发件人必须要和Authenticator验证的帐号一致
Transport transport = session.getTransport("smtp");
transport.connect(userName, password);
transport.send(message);
transport.close();
} catch (MessagingException e) {
e.printStackTrace();
}



}

public static void main(String[] args) {
SendMail.sendMail();
}
}