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;

     }

 }