Java 发送邮件

/**
 * 邮件工具
 */
package test;

import java.util.Date;
import java.util.Properties;

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;

/**
 * @author lisanlai
 *
 */
public class MailUtil {
	/**
	 * 发送电子邮件
	 * @param smtpHost 发信主机
	 * @param receiver 邮件接收者
	 * @param title 邮件的标题
	 * @param content 邮件的内容
	 * @param sender 邮件发送者
	 * @param user 发送者邮箱用户名
	 * @param pwd	发送者邮箱密码
	 * @throws Exception 
	 */
	public static void sendEmail(String smtpHost,String receiver,String title,String content,String sender,String user,String pwd) throws Exception{
		Properties props=new Properties();
		props.put("mail.host", smtpHost);//发信的主机
		props.put("mail.transport.protocol", "smtp");
		//props.put("mail.smtp.host",smtpHost);
		props.put("mail.smtp.auth","true");
		Session s=Session.getDefaultInstance(props);
		s.setDebug(true);
		MimeMessage message=new MimeMessage(s);
		//给消息对象设置发件人/收件人/主题/发信时间
		//发件人的邮箱
		InternetAddress from = new InternetAddress(sender);
		message.setFrom(from);
		InternetAddress to=new InternetAddress(receiver);
		message.setRecipient(Message.RecipientType.TO,to);
		message.setSubject(title);
		message.setSentDate(new Date());
		//给消息对象设置内容
		BodyPart mdp=new MimeBodyPart();//新建一个存放信件内容的BodyPart对象
		mdp.setContent(content,"text/html;charset=gb2312");//给BodyPart对象设置内容和格式/编码方式防止邮件出现乱码
		Multipart mm=new MimeMultipart();//新建一个MimeMultipart对象用来存放BodyPart对
		//象(事实上可以存放多个)
		mm.addBodyPart(mdp);//将BodyPart加入到MimeMultipart对象中(可以加入多个BodyPart)
		message.setContent(mm);//把mm作为消息对象的内容

		message.saveChanges();
		Transport transport=s.getTransport("smtp");
		transport.connect(smtpHost,user,pwd);//设置发邮件的网关，发信的帐户和密码，这里修改为您自己用的
		transport.sendMessage(message,message.getAllRecipients());
		transport.close();
	}
}	

 测试：

package test;

public class TestMail {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String smtpHost = Constants.SMTP_HOST;
		String receiver = "[e-mail]";
		String title = Constants.TITLE;
		String content = StringUtil.formatMsg(Constants.CONTENT,"admin","111111");
		String sender = Constants.SENDER;
		String user = Constants.SENDER_NAME;
		String pwd = Constants.SENDER_PWD;
		try {
			System.out.println("开始发送邮件：");
			MailUtil.sendEmail(smtpHost, receiver, title, "这是一个测试邮件，来自：李三来", sender,user,pwd);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}