如何從批處理程序或java發送電子郵件

Question

我想製作一個antiviruse備份系統，我希望程序向用戶發送一封電子郵件，然後用戶創建一個帳戶，包含警告和副本系統備份。用java發送電子郵件有什麼好的教程嗎？

Answer 1

如果你想從批處理中發送它，真的有很多方法可以做到。

下面是一個用於Windows的方式：

http://www.howtogeek.com/120011/stupid-geek-tricks-how-to-send-email-from-the-command-line-in-windows-without-extra-software/

下面是Linux的一種方法：

http://www.simplehelp.net/2008/12/01/how-to-send-email-from-the-linux-command-line/

Answer 2

這裏是例子： 使用Java的郵件1.4.4.jar

package net.spring.mail; 


import java.io.IOException; 
import java.util.Date; 
import java.util.Properties; 

import javax.mail.Authenticator; 
import javax.mail.Message; `enter code here` 
import javax.mail.MessagingException; 
import javax.mail.Multipart; 
import javax.mail.PasswordAuthentication; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.internet.AddressException; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeBodyPart; 
import javax.mail.internet.MimeMessage; 
import javax.mail.internet.MimeMultipart; 
/** 
* javaMail發送郵件 
* 支持多郵件發送 
* @author fazhen.zheng 
* 
*/ 
public class EmailAttachmentSender { 

    public static void sendEmailWithAttachments(String host, String port, 
      final String userName, final String password, String toAddress, 
      String subject, String message, String[] attachFiles) 
      throws AddressException, MessagingException { 
     // sets SMTP server properties 
     Properties properties = new Properties(); 
     properties.put("mail.smtp.host", host); 
     properties.put("mail.smtp.port", port); 
     properties.put("mail.smtp.auth", "true"); 
     properties.put("mail.smtp.starttls.enable", "true"); 
     properties.put("mail.user", userName); 
     properties.put("mail.password", password); 

     // creates a new session with an authenticator 
     Authenticator auth = new Authenticator() { 
      public PasswordAuthentication getPasswordAuthentication() { 
       return new PasswordAuthentication(userName, password); 
      } 
     }; 
     Session session = Session.getInstance(properties, auth); 

     // creates a new e-mail message 
     Message msg = new MimeMessage(session); 

     msg.setFrom(new InternetAddress(userName)); 
     InternetAddress[] toAddresses = { new InternetAddress(toAddress) }; 
     msg.setRecipients(Message.RecipientType.TO, toAddresses); 
     msg.setSubject(subject); 
     msg.setSentDate(new Date()); 

     // creates message part 
     MimeBodyPart messageBodyPart = new MimeBodyPart(); 
     messageBodyPart.setContent(message, "text/html"); 

     // creates multi-part 
     Multipart multipart = new MimeMultipart(); 
     multipart.addBodyPart(messageBodyPart); 

     // adds attachments 
     if (attachFiles != null && attachFiles.length > 0) { 
      for (String filePath : attachFiles) { 
       MimeBodyPart attachPart = new MimeBodyPart(); 

       try { 
        attachPart.attachFile(filePath); 
       } catch (IOException ex) { 
        ex.printStackTrace(); 
       } 

       multipart.addBodyPart(attachPart); 
      } 
     } 

     // sets the multi-part as e-mail's content 
     msg.setContent(multipart); 

     // sends the e-mail 
     Transport.send(msg); 

    } 

    /** 
    * 測試髮帶附件郵件 
    */ 
    public static void main(String[] args) { 
     // 發件人信息 
     String host = "smtp.163.com"; 
     String port = "25"; 
     String mailFrom = "example@163.com"; 
     String password = "passwrod"; 

     // 收件人信息 
     String mailTo = "example@ehualu.com"; 
     String subject = "javaMail"; 
     String message = "這是一封由javaMail自動發出的測試郵件，請勿回覆。"; 

     // 附件 
     String[] attachFiles = new String[1]; 
     attachFiles[0] = "c:/EHL_SysManager.jar"; 
     try { 
      sendEmailWithAttachments(host, port, mailFrom, password, mailTo, 
        subject, message, attachFiles); 
      System.out.println("郵件發送成功."); 
     } catch (Exception ex) { 
      System.out.println("發送失敗"); 
      ex.printStackTrace(); 
     } 
    } 
}