wiki:waue/2011/0804
使用 java api 寄信
javamail 1.4.4 + java 6 + sendmail

  • 系統要裝能寄信的工具
sudo apt-get install sendmail sendmail-bin
  • 下載 javamail ; 雖然網站上有寫,但此次不需要 JavaBeans? Activation Framework (JAF)

http://www.oracle.com/technetwork/java/javamail/index.html

  • 解壓縮後,將 javamail.jar 放到 classpath 內
  • 測試將 /home/waue/Desktop/index.html 寄到 gmail
  • 程式碼
    package tw.org.nchc.icasIII;
    
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileReader;
    import java.io.IOException;
    import java.util.Date;
    import java.util.Properties;
    
    import javax.activation.DataHandler;
    import javax.mail.Folder;
    import javax.mail.Message;
    import javax.mail.MessagingException;
    import javax.mail.Session;
    import javax.mail.Store;
    import javax.mail.Transport;
    import javax.mail.URLName;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeMessage;
    import javax.mail.util.ByteArrayDataSource;
    
    public class sendhtml {
    
      public static void main(String[] argv) {
        new sendhtml(argv);
      }
    
      public sendhtml(String[] argv) {
    
        String to, subject = null, from = null;
        String cc = null, bcc = null, url = null;
        String mailhost = null;
        String mailer = "sendhtml";
        String protocol = null, host = null, user = null, password = null;
        String record = null; // name of folder in which to record mail
        boolean debug = false;
        int optind;
        
        to = "waue0920@gmail.com";
        subject = "test, javamail";
        from = "waue0920@nchc.org.tw";
        cc = null;
        bcc = null;
        url = null;
        mailhost = "localhost";
        mailer = "sendhtml";
        protocol = null;
        host = null;
        user = null;
        password = null;
        record = null; // name of folder in which to record mail
        
        try {
          BufferedReader in = new BufferedReader(new FileReader(new File("/home/waue/Desktop/index.html")));
          if (subject == null) {
            System.out.print("Subject: ");
            System.out.flush();
            subject = in.readLine();
          } else {
            System.out.println("Subject: " + subject);
          }
    
          Properties props = System.getProperties();
    
          if (mailhost != null)
            props.put("mail.smtp.host", mailhost);
    
          Session session = Session.getInstance(props, null);
          if (debug)
            session.setDebug(true);
    
          // construct the message
          Message msg = new MimeMessage(session);
          if (from != null)
            msg.setFrom(new InternetAddress(from));
          else
            msg.setFrom();
    
          msg.setRecipients(Message.RecipientType.TO,
              InternetAddress.parse(to, false));
          if (cc != null)
            msg.setRecipients(Message.RecipientType.CC,
                InternetAddress.parse(cc, false));
          if (bcc != null)
            msg.setRecipients(Message.RecipientType.BCC,
                InternetAddress.parse(bcc, false));
    
          msg.setSubject(subject);
    
          collect(in, msg);
    
          msg.setHeader("X-Mailer", mailer);
          msg.setSentDate(new Date());
    
          // send the thing off
          Transport.send(msg);
    
          System.out.println("\nMail was sent successfully.");
    
          // Keep a copy, if requested.
    
          if (record != null) {
            // Get a Store object
            Store store = null;
            if (url != null) {
              URLName urln = new URLName(url);
              store = session.getStore(urln);
              store.connect();
            } else {
              if (protocol != null)
                store = session.getStore(protocol);
              else
                store = session.getStore();
    
              // Connect
              if (host != null || user != null || password != null)
                store.connect(host, user, password);
              else
                store.connect();
            }
    
            // Get record Folder. Create if it does not exist.
            Folder folder = store.getFolder(record);
            if (folder == null) {
              System.err.println("Can't get record folder.");
              System.exit(1);
            }
            if (!folder.exists())
              folder.create(Folder.HOLDS_MESSAGES);
    
            Message[] msgs = new Message[1];
            msgs[0] = msg;
            folder.appendMessages(msgs);
    
            System.out.println("Mail was recorded successfully.");
          }
    
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    
      public void collect(BufferedReader in, Message msg)
          throws MessagingException, IOException {
        String line;
        String subject = msg.getSubject();
        StringBuffer sb = new StringBuffer();
        sb.append("<HTML>\n");
        sb.append("<HEAD>\n");
        sb.append("<TITLE>\n");
        sb.append(subject + "\n");
        sb.append("</TITLE>\n");
        sb.append("</HEAD>\n");
    
        sb.append("<BODY>\n");
        sb.append("<H1>" + subject + "</H1>" + "\n");
    
        while ((line = in.readLine()) != null) {
          sb.append(line);
          sb.append("\n");
        }
    
        sb.append("</BODY>\n");
        sb.append("</HTML>\n");
    
        msg.setDataHandler(new DataHandler(new ByteArrayDataSource(sb
            .toString(), "text/html")));
      }
    }
    
    
  • 可以參考 demo 內的範例寫 java 寄信的 code
Last modified 10 years ago Last modified on Aug 4, 2011, 3:17:54 PM