一、目录结构

记得要导包：

SendMail代码：

package cn.xh.mail;


import java.util.Properties;


import javax.mail.Authenticator;


import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMessage.RecipientType;


import org.junit.Test;


public class SendMail {
@Test
public void sendMail() throws Exception
{

/*
* 1. 得到session
*/
Properties pro=new Properties();
pro.setProperty("mail.host", "smtp.163.com");
pro.setProperty("mail.smtp.auth", "true");

Authenticator authenticator=new Authenticator() {
@Override
protected
PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication("163邮箱账号", "授权后的密码");//记得邮箱要授权

}
};

Session session=Session.getInstance(pro, authenticator);


/*
* 2. 创建MimeMessage
*/
MimeMessage message=new MimeMessage(session);

message.setFileName("测试邮件");
message.setFrom(new InternetAddress("163邮箱账号"));
message.setRecipients(RecipientType.TO, "2xxxxxxx5@qq.com");//接收者的账号


message.setSubject("来自外星的邮件");
message.setContent("这是一封秘密邮件", "text/html;charset=utf-8");

/*
* 3. 狂发
*/
for(int i=0;i<=100;i++)
{

Transport.send(message);
}

}

}