发送和接收Gmail邮件 Java 源码

发送邮件代码:

import java.security.Security;   
import java.util.Date;   
import java.util.Properties;   
  
import javax.mail.Authenticator;   
import javax.mail.Message;   
import javax.mail.MessagingException;   
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.MimeMessage;   
  
/**  
 * 使用Gmail发送邮件  
 * @author Winter Lau  
 */  
public class GmailSender {   
  
 public static void main(String[] args) throws AddressException, MessagingException {   
  Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());   
  final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";   
  // Get a Properties object   
  Properties props = System.getProperties();   
  props.setProperty("mail.smtp.host", "smtp.gmail.com");   
  props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);   
  props.setProperty("mail.smtp.socketFactory.fallback", "false");   
  props.setProperty("mail.smtp.port", "465");   
  props.setProperty("mail.smtp.socketFactory.port", "465");   
  props.put("mail.smtp.auth", "true");   
  final String username = "[邮箱帐号]";   
  final String password = "[邮箱密码]";   
  Session session = Session.getDefaultInstance(props, new Authenticator(){   
      protected PasswordAuthentication getPasswordAuthentication() {   
          return new PasswordAuthentication(username, password);   
      }});   
  
       // -- Create a new message --   
  Message msg = new MimeMessage(session);   
  
  // -- Set the FROM and TO fields --   
  msg.setFrom(new InternetAddress(username + "@mo168.com"));   
  msg.setRecipients(Message.RecipientType.TO,   
    InternetAddress.parse("[收件人地址]",false));   
  msg.setSubject("Hello");   
  msg.setText("How are you");   
  msg.setSentDate(new Date());   
  Transport.send(msg);   
     
  System.out.println("Message sent.");   
 }   
}  

接收邮件代码:

import java.io.UnsupportedEncodingException;   
import java.security.*;   
import java.util.Properties;   
import javax.mail.*;   
import javax.mail.internet.InternetAddress;   
import javax.mail.internet.MimeUtility;   
  
/**  
 * 用于收取Gmail邮件  
 * @author Winter Lau  
 */  
public class GmailFetch {   
    
 public static void main(String argv[]) throws Exception {   
  
  Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());   
  final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";   
  
  // Get a Properties object   
  Properties props = System.getProperties();   
  props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);   
  props.setProperty("mail.pop3.socketFactory.fallback", "false");   
  props.setProperty("mail.pop3.port", "995");   
  props.setProperty("mail.pop3.socketFactory.port", "995");   
  
  //以下步骤跟一般的JavaMail操作相同   
  Session session = Session.getDefaultInstance(props,null);   
  
  //请将红色部分对应替换成你的邮箱帐号和密码   
  URLName urln = new URLName("pop3","pop.gmail.com",995,null,   
    "[邮箱帐号]", "[邮箱密码]");   
  Store store = session.getStore(urln);   
  Folder inbox = null;   
  try {   
   store.connect();   
   inbox = store.getFolder("INBOX");   
   inbox.open(Folder.READ_ONLY);   
   FetchProfile profile = new FetchProfile();   
   profile.add(FetchProfile.Item.ENVELOPE);   
   Message[] messages = inbox.getMessages();   
   inbox.fetch(messages, profile);   
   System.out.println("收件箱的邮件数：" + messages.length);   
   for (int i = 0; i < messages.length; i++) {   
    //邮件发送者   
    String from = decodeText(messages[i].getFrom()[0].toString());   
    InternetAddress ia = new InternetAddress(from);   
    System.out.println("FROM:" + ia.getPersonal()+'('+ia.getAddress()+')');   
    //邮件标题   
    System.out.println("TITLE:" + messages[i].getSubject());   
    //邮件大小   
    System.out.println("SIZE:" + messages[i].getSize());   
    //邮件发送时间   
    System.out.println("DATE:" + messages[i].getSentDate());   
   }   
  } finally {   
   try {   
    inbox.close(false);   
   } catch (Exception e) {}   
   try {   
    store.close();   
   } catch (Exception e) {}   
  }   
 }   
    
 protected static String decodeText(String text)   
   throws UnsupportedEncodingException {   
  if (text == null)   
   return null;   
  if (text.startsWith("=?GB") || text.startsWith("=?gb"))   
   text = MimeUtility.decodeText(text);   
  else  
   text = new String(text.getBytes("ISO8859_1"));   
  return text; 
 }  
}  

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