用Java發送圖文並茂的HTML郵件

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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發送郵件的例子 
 * </P> 
 *  
 * <P> 
 * Description:發送圖片附件並在html中使用該圖片 
 * </P> 
 *  
 * <P> 
 * Copyright: Copyright (c) 2007 
 * </P> 
 *  
 * @author 孫鈺佳 
 * @main [email protected] 
 * @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 = "[email protected]";  
    private static String toMailAddress = "[email protected]";  
 
    public static void main(String[] args) throws Exception {  
        Properties props = new Properties();  
        props.put("mail.smtp.auth", "true");  
        props.put("mail.smtp.host", smtpServer);  
        // 獲得郵件會話對象  
        Session session = Session.getDefaultInstance(props,  
                new SmtpAuthenticator(username, password));  
        /** *************************************************** */ 
        // 創建MIME郵件對象  
        MimeMessage mimeMessage = new MimeMessage(session);  
        mimeMessage.setFrom(new InternetAddress(fromMailAddress));// 發件人  
        mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(  
                toMailAddress));// 收件人  
        mimeMessage.setSubject("主題");  
        mimeMessage.setSentDate(new Date());// 發送日期  
        Multipart mp = new MimeMultipart("related");// related意味着可以發送html格式的郵件  
        /** *************************************************** */ 
        BodyPart bodyPart = new MimeBodyPart();// 正文  
        bodyPart.setDataHandler(new DataHandler("測<img src="cid:IMG1" />試",  
                "text/html;charset=GBK"));// 網頁格式  
        /** *************************************************** */ 
        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())  
                + "?=");// 解決附件名中文亂碼  
        mp.addBodyPart(attachBodyPart);  
        /** *************************************************** */ 
        MimeBodyPart imgBodyPart = new MimeBodyPart(); // 附件圖標  
        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中使用該圖片方法src="cid:IMG1"  
        mp.addBodyPart(imgBodyPart);  
        /** *************************************************** */ 
        mp.addBodyPart(bodyPart);  
        mimeMessage.setContent(mp);// 設置郵件內容對象  
        Transport.send(mimeMessage);// 發送郵件  
 
    }  
 
    /** 
     * 讀取文件 
     *  
     * @param file 
     *            文件路徑 
     * @return 返回二進制數組 
     */ 
    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認證 
 */ 
class SmtpAuthenticator extends Authenticator {  
    String username = null;  
    String password = null;  
 
    // SMTP身份驗證  
    public SmtpAuthenticator(String username, String password) {  
        this.username = username;  
        this.password = password;  
    }  
 
    public PasswordAuthentication getPasswordAuthentication() {  
        return new PasswordAuthentication(this.username, this.password);  
    }  
 
}
原文網址：http://blog.csdn.net/sunyujia/archive/2008/06/10/2528696.aspx