用Java发送图文并茂的HTML邮件

package com.syj;

import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Message;
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.BodyPart;
import javax.mail.Multipart;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;
import com.sun.istack.internal.ByteArrayDataSource;

/**
 * <P>
 * Title:用java发送邮件的例子
 * </P>
 * <P>
 * Description:发送图片附件并在html中使用该图片
 * </P>
 * <P>
 * Copyright: Copyright (c) 2007
 * </P>
 * 
 * @author 孙钰佳
 * @main sunyujia@yahoo.cn
 * @date Jun 10, 2008 12:35:26 AM
 */
public class SendMail {
  private static String username = "xxxx";

  private static String password = "xxxx";

  private static String smtpServer = "smtp.163.com";

  private static String fromMailAddress = "xxxx@163.com";

  private static String toMailAddress = "sunyujia@yahoo.cn";

  public static void main(String[] args) throws Exception {
    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.host", smtpServer);
    // 获得邮件会话对象
    Session session = Session.getDefaultInstance(props,
        new SmtpAuthenticator(username, password));
    /** *************************************************** */
    // 创建MIME邮件对象
    MimeMessage mimeMessage = new MimeMessage(session);
    mimeMessage.setFrom(new InternetAddress(fromMailAddress));// 发件人
    mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(
        toMailAddress));// 收件人
    mimeMessage.setSubject("主题");
    mimeMessage.setSentDate(new Date());// 发送日期
    Multipart mp = new MimeMultipart("related");// related意味着可以发送html格式的邮件
    /** *************************************************** */
    BodyPart bodyPart = new MimeBodyPart();// 正文
    bodyPart.setDataHandler(new DataHandler("测<img src="cid:IMG1" />试",
        "text/html;charset=GBK"));// 网页格式
    /** *************************************************** */
    BodyPart attachBodyPart = new MimeBodyPart();// 普通附件
    FileDataSource fds = new FileDataSource("c:/boot.ini");
    attachBodyPart.setDataHandler(new DataHandler(fds));
    attachBodyPart.setFileName("=?GBK?B?"
        + new sun.misc.BASE64Encoder().encode(fds.getName().getBytes())
        + "?=");// 解决附件名中文乱码
    mp.addBodyPart(attachBodyPart);
    /** *************************************************** */
    MimeBodyPart imgBodyPart = new MimeBodyPart(); // 附件图标
    byte[] bytes = readFile("C:/button.gif");
    ByteArrayDataSource fileds = new ByteArrayDataSource(bytes,
        "application/octet-stream");
    imgBodyPart.setDataHandler(new DataHandler(fileds));
    imgBodyPart.setFileName("button.gif");
    imgBodyPart.setHeader("Content-ID", "<IMG1></IMG1>");// 在html中使用该图片方法src="cid:IMG1"
    mp.addBodyPart(imgBodyPart);
    /** *************************************************** */
    mp.addBodyPart(bodyPart);
    mimeMessage.setContent(mp);// 设置邮件内容对象
    Transport.send(mimeMessage);// 发送邮件

  }

  /**
   * 读取文件
   * 
   * @param file 文件路径
   * @return 返回二进制数组
   */
  public static byte[] readFile(String file) {
    FileInputStream fis = null;
    ByteArrayOutputStream bos = null;
    try {
      fis = new FileInputStream(file);
      bos = new ByteArrayOutputStream();
      int bytesRead;
      byte buffer[] = new byte[1024 * 1024];
      while ((bytesRead = fis.read(buffer)) != -1) {
        bos.write(buffer, 0, bytesRead);
        Arrays.fill(buffer, (byte) 0);
      }
    } catch (IOException e1) {
      e1.printStackTrace();
    } finally {
      try {
        if (bos != null)
          bos.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    return bos.toByteArray();
  }
}

/**
 * Smtp认证
 */
class SmtpAuthenticator extends Authenticator {
  String username = null;

  String password = null;

  // SMTP身份验证
  public SmtpAuthenticator(String username, String password) {
    this.username = username;
    this.password = password;
  }

  public PasswordAuthentication getPasswordAuthentication() {
    return new PasswordAuthentication(this.username, this.password);
  }
}