java发送邮件

1、先导入jar包：mail-1.4.7.jar

java代码：

package com.yunlian.utils;
import java.util.Date;
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 javax.mail.internet.MimeMessage;

/**
 * java 发送邮件
 * @author yunlian
 */
public class SendEmail {

    public static final String HOST = "smtp.sina.com";
//	public static final String HOST = "smtp.qq.com";
    public static final String PROTOCOL = "smtp";   
    public static final int PORT = 25;
    //qq需要使用企业邮箱  smtp.exmail.qq.com ，使用SSL，端口号465
    public static final String FROM = "[e-mail]";//发件人的email
    public static final String PWD = "xxxx";//发件人密码

    /**
     * 获取Session
     * @return
     */
    private static Session getSession() {
        Properties props = new Properties();
        props.put("mail.smtp.host", HOST);//设置服务器地址
        props.put("mail.store.protocol" , PROTOCOL);//设置协议
        props.put("mail.smtp.port", PORT);//设置端口
        props.put("mail.smtp.auth" , true);

        Authenticator authenticator = new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(FROM, PWD);
            }

        };
        Session session = Session.getDefaultInstance(props , authenticator);

        return session;
    }

    public static void send(String toEmail , String content) {
        Session session = getSession();
        try {
            System.out.println("--send--"+content);
            // Instantiate a message
            Message msg = new MimeMessage(session);

            //Set message attributes
            msg.setFrom(new InternetAddress(FROM));
            InternetAddress[] address = {new InternetAddress(toEmail)};
            msg.setRecipients(Message.RecipientType.TO, address);
            msg.setSubject("账号激活邮件");
            msg.setSentDate(new Date());
            msg.setContent(content , "text/html;charset=utf-8");

            //Send the message
            Transport.send(msg);
        }
        catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
    public static void main(String[] args) {
		String content = "欢迎注册网站，你的注册密码是："+(int)(Math.random()*9999+1)
				+"，请不要轻易泄露";
		String toEmail = "[e-mail]";
//		String toEmail = "[e-mail]";
		send(toEmail, content);
	}
}