javaMail邮件发送功能(多收件人,多抄送人,多密送人,多附件)

  1. private Session session;  
  2.    private Transport transport;  
  3.   
  4.    private String mailHost = "";  
  5.    private String sender_username = "";  
  6.    private String sender_password = "";  
  7.    private String contentPart_Type = "";  
  8.   
  9.    private Properties properties = new Properties();  
  10.      
  11.    /* 
  12.     * 初始化方法 
  13.     */  
  14.    public JavaMailWithAttachment() {  
  15.        try {  
  16.         FileInputStream is=new FileInputStream("E:/workspace1.6/ICRM-H5/src/mailServer.properties");  
  17.            properties.load(is);  
  18.            this.mailHost = properties.getProperty("mail.smtp.host");  
  19.            this.sender_username = properties.getProperty("mail.sender.username");  
  20.            this.sender_password = properties.getProperty("mail.sender.password");  
  21.            this.contentPart_Type = properties.getProperty("mail.contentPart.type");  
  22.        } catch (IOException e) {  
  23.            e.printStackTrace();  
  24.        }  
  25.   
  26.        session = Session.getInstance(properties);  
  27.        session.setDebug(true); //开启后有调试信息,发布时关闭  
  28.        message = new MimeMessage(session);  
  29.    }  
  30.   
  31.      
  32.    /** 
  33.     * 发送邮件 
  34.     * @param subject 
  35.     *               邮件主题 
  36.     * @param sendHtml 
  37.     *               邮件内容 
  38.     * @param toUser 
  39.     *               收件人  多个时参数形式  ：  "xxx@xxx.com,xxx@xxx.com,xxx@xxx.com" 
  40.     * @param ccUser 
  41.     *               抄送人   同上 
  42.     * @param bccUser 
  43.     *               密送人   同上 
  44.     * @param attachment 
  45.     *               附件 
  46.     */  
  47. public void doSendHtmlEmail(String subject, String sendHtml,  
  48.         String  toUser, String ccUser, String bccUser, File [] attachment){  
  49.     try {  
  50.         // 发件人  
  51.            InternetAddress from = new InternetAddress(sender_username);  
  52.            message.setFrom(from);  
  53.              
  54.            // 设置多个收件人地址  
  55.            if(null != toUser && !toUser.isEmpty()){  
  56.             @SuppressWarnings("static-access")  
  57.             InternetAddress[] internetAddressTo = new InternetAddress().parse(toUser);  
  58.             message.setRecipients(Message.RecipientType.TO, internetAddressTo);  
  59.            }  
  60.              
  61.            // 设置多个抄送地址  
  62.            if(null != ccUser && !ccUser.isEmpty()){  
  63.             @SuppressWarnings("static-access")  
  64.             InternetAddress[] internetAddressCC = new InternetAddress().parse(ccUser);  
  65.             message.setRecipients(Message.RecipientType.CC, internetAddressCC);  
  66.            }  
  67.              
  68.            // 设置多个密送地址  
  69.            if(null != bccUser && !bccUser.isEmpty()){  
  70.             @SuppressWarnings("static-access")  
  71.             InternetAddress[] internetAddressBCC = new InternetAddress().parse(bccUser);  
  72.             message.setRecipients(Message.RecipientType.BCC, internetAddressBCC);  
  73.            }  
  74.              
  75.            // 发送日期  
  76.            message.setSentDate(new Date());   
  77.              
  78.            // 邮件主题  
  79.            message.setSubject(subject);  
  80.              
  81.            // 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  
  82.            Multipart multipart = new MimeMultipart();  
  83.              
  84.            // 添加邮件正文  
  85.            BodyPart contentPart = new MimeBodyPart();  
  86.            contentPart.setContent(sendHtml, contentPart_Type);  
  87.            multipart.addBodyPart(contentPart);  
  88.              
  89.            BodyPart attachmentBodyPart = null;  
  90.            // 添加附件的内容  
  91.            if (null != attachment && attachment.length != 0) {  
  92.             for (File file : attachment) {  
  93.                 attachmentBodyPart = new MimeBodyPart();  
  94.                   
  95.                 DataSource source = new FileDataSource(file);  
  96.                 attachmentBodyPart.setDataHandler(new DataHandler(source));  
  97.                 //MimeUtility.encodeWord可以避免文件名乱码  
  98.                    attachmentBodyPart.setFileName(MimeUtility.encodeWord(file.getName()));  
  99.                    multipart.addBodyPart(attachmentBodyPart);  
  100.             }  
  101.            }  
  102.              
  103.            // 将multipart对象放到message中  
  104.            message.setContent(multipart);  
  105.              
  106.            // 保存邮件  
  107.            message.saveChanges();  
  108.              
  109.            // smtp验证  
  110.            transport = session.getTransport("smtp");  
  111.            transport.connect(mailHost, sender_username, sender_password);  
  112.              
  113.            // 发送  
  114.            transport.sendMessage(message, message.getAllRecipients());  
  115.            System.out.println("发送成功！");  
  116.     } catch (Exception e) {  
  117.         e.printStackTrace();  
  118.     } finally {  
  119.         if (transport != null) {  
  120.                try {  
  121.                    transport.close();  
  122.                } catch (MessagingException e) {  
  123.                    e.printStackTrace();  
  124.                }  
  125.            }  
  126.     }  
  127.    }  
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原文地址：https://www.cnblogs.com/liubaihui/p/8458457.html