JavaMail开发

---------------------------------------------发邮件------------------------------------------

需要jar包：

　　javaMail：mail.jar

　　jaf：activation.jar

public class MailTest {

    /**
     * 发送一个正常的邮件--只含文本
     * @throws Exception 
     */
    @Test
    public void sendNormal() throws Exception {
        
        //1，设置邮箱服务器参数
        Properties props = new Properties();
        props.put("mail.transport.protocol", "smtp");    // 指定协议
        props.put("mail.smtp.host", "localhost");        // 主机   
        props.put("mail.smtp.port", 25);                // 端口
        props.put("mail.smtp.auth", "true");            // 用户密码认证
        props.put("mail.debug", "true");                // 调试模式
        
        //2，创建邮件会话对象
        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("user1", "user1");
            }
        });
        
        MimeMessage message = new MimeMessage(session);
        message.setSentDate(new Date());
        message.setFrom(new InternetAddress("user1@test.com"));
        message.setRecipient(RecipientType.TO, new InternetAddress("user2@test.com"));
        message.setSubject("标题");
        message.setText("内容");
        
        Transport.send(message);
        
    }
    
    /**
     * 发送带图片的邮件
     * 
     */
    @Test
    public void sendPhothMail() throws Exception {
        //1，设置邮箱服务器参数
        Properties props = new Properties();
        props.put("mail.transport.protocol", "smtp");    // 指定协议
        props.put("mail.smtp.host", "localhost");        // 主机   
        props.put("mail.smtp.port", 25);                // 端口
        props.put("mail.smtp.auth", "true");            // 用户密码认证
//        props.put("mail.debug", "true");                // 调试模式
        
        //2，创建邮件会话对象
        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("user1", "user1");
            }
        });
        
        //3，邮件信息
        MimeMessage message = new MimeMessage(session);
        message.setSentDate(new Date());
        message.setFrom(new InternetAddress("user1@test.com"));
        message.setRecipient(RecipientType.TO, new InternetAddress("user2@test.com"));
        message.setSubject("带图片的邮件");
        message.setSentDate(new Date());
//        message.setText("哈哈");  当使用Multipart时候，设置文本就无效

        /**************1. 邮件设置图片资源********************/
        // 1.1 创建负责复杂邮件体
        MimeMultipart mul = new MimeMultipart("relassssted");
        // 邮件体related  = 内容 +  资源
        MimeBodyPart content = new MimeBodyPart(); // 内容
        MimeBodyPart resource = new MimeBodyPart();  // 资源
        // 把内容资源设置到复杂邮件中
        mul.addBodyPart(content);
        mul.addBodyPart(resource);
        
        //---- 设置邮件资源-----
        
        File file = new File("f:/1.jpg");
        // 设置本地数据资源
        resource.setDataHandler(new DataHandler(new FileDataSource(file)));  
        // 设置网络数据
//        resource.setDataHandler(new DataHandler(new URL("https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=1623986359,132242757&fm=117&gp=0.jpg")));
        resource.setContentID("1.jpg");  // 图片资源在邮件中的名称
        
        //---- 设置邮件内容------
        content.setContent("<img src='cid:1.jpg' />正文邮件，你看图片！", "text/html;charset=UTF-8");
        
        // 1.2 把复杂邮件，设置到邮件对象中(message)！
        message.setContent(mul);
        
        message.saveChanges(); // 保存邮件
        
        Transport.send(message);
        
    }
    
    /**
     * 发送带图片和附件的邮件
     */
    @Test
    public void sendAttachMail() throws Exception {
        //1，设置邮箱服务器参数
        Properties props = new Properties();
        props.put("mail.transport.protocol", "smtp");    // 指定协议
        props.put("mail.smtp.host", "localhost");        // 主机   
        props.put("mail.smtp.port", 25);                // 端口
        props.put("mail.smtp.auth", "true");            // 用户密码认证
        props.put("mail.debug", "true");                // 调试模式
        
        //2，创建邮件会话对象
        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("user1", "user1");
            }
        });
        
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress("user1@test.com"));
        message.setRecipient(RecipientType.TO, new InternetAddress("user2@test.com"));
        message.setSubject("带图片和附件的邮件：");
        message.setSentDate(new Date());
        
        //3.设置复杂邮件格式
        MimeMultipart mix = new MimeMultipart();
        //3.1附件
        MimeBodyPart attach = new MimeBodyPart();
        //3.2正文
        MimeBodyPart content = new MimeBodyPart();
        //3.3附件正文添加到复杂格式中
        mix.addBodyPart(attach);
        mix.addBodyPart(content);
        
        //3.3.1附件内容设置
        attach.setDataHandler(new DataHandler(new FileDataSource(zipFile(new File("f:/1.jpg")))));
        attach.setFileName(MimeUtility.encodeText("附件.zip"));
        
        //3.3.2正文设置
        MimeMultipart mul = new MimeMultipart();
        MimeBodyPart text = new MimeBodyPart();
        MimeBodyPart img = new MimeBodyPart();
        mul.addBodyPart(text);
        mul.addBodyPart(img);
        //图片文本设置
        img.setDataHandler(new DataHandler(new FileDataSource(new File("f:/1.jpg"))));
        img.setContentID("1.jpg");
        text.setContent("<img src='cid:1.jpg' />哈哈附件+文本+图片", "text/html;charset=utf-8");
        //正文内容添加到邮件
        content.setContent(mul);
        
        //复杂邮件格式添加到邮件主体
        message.setContent(mix);
        
        //4，发送邮件
        Transport.send(message);
    }

    /**
     * 数据压缩
     * @throws IOException
     */
    public File zipFile(File file) throws IOException {
        
        String tem = "f:/2.zip";
        
        InputStream in = new FileInputStream(file);
        GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream(new File(tem)));
        byte[] buf = new byte[8*1024];
        int len = 0;
        while ((len = in.read(buf)) != -1) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
        
        File temFile = new File(tem);
        
        return file;
        
    }

}