Email实例

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.Transport;

public class email {
public void send(String emailHost, //smtp服务器
        String toEmail, //收件人邮箱
        String additionalPath, //附件路径
        String additionalName, //附件名称
        String myEmailUser, //发件邮箱
        String myEmailPwd, //密码
        String emailTitle, //邮件标题
        String context ){ //内容
   Properties props = new Properties();
   props.put("mail.smtp.emailHost",emailHost);
   props.put("mail.smtp.auth", "true");
   props.put("mail.smtp.port", "");//qq专用其它不需要   

   Session session = Session.getDefaultInstance(props);
   session.setDebug(true);
   MimeMessage message = new MimeMessage(session);
   try {
       message.setFrom(new InternetAddress(myEmailUser)); // 加载发件人地址            

       message.addRecipient(Message.RecipientType.TO, new InternetAddress(toEmail));// 加载收件人地址
       message.setSubject(emailTitle);// 加载标题

       Multipart multipart = new MimeMultipart();// 向multipart对象中添加邮件的各个部分内容，包括文本内容和附件
       BodyPart contentPart = new MimeBodyPart();
       contentPart.setText(context);// 设置邮件的文本内容
       multipart.addBodyPart(contentPart);

       BodyPart messageBodyPart = new MimeBodyPart();// 添加附件
       DataSource source = new FileDataSource(additionalPath);

       messageBodyPart.setDataHandler(new DataHandler(source));// 添加附件的内容
       sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
       messageBodyPart.setFileName("=?GBK?B?"+enc.encode(additionalName.getBytes())+"?=");
       multipart.addBodyPart(messageBodyPart);

       message.setContent(multipart);//将multipart对象放到message中
       message.saveChanges();// 保存邮件
       Transport transport = session.getTransport("smtp");// 发送邮件
       transport.connect(emailHost, myEmailUser, myEmailPwd);// 连接服务器的邮箱
       transport.sendMessage(message, message.getAllRecipients());// 把邮件发送出去
       transport.close();
   } catch (Exception e) {
       e.printStackTrace();
   }
}

public static void main(String[] args) {
email email = new email();
email.send("smtp.qq.com",
"xxxxxxxxx@qq.com",
"E:\\text.txt",
"附件名称随便",
"xxxxxxxxx@qq.com",
"xxxxxxxxxrqudbgie",//qq为开启smtp给的密钥,其它为密码
"测试邮件",
"我的最新测试邮件!!"
    );
   }