java mail 邮件发送和接收

详细的JavaMail技术介绍参考http://book.csdn.net/bookfiles/371/10037114086.shtml
一、使用JavaMail 发送邮件

 

package com.bb.basic.javamail;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.*;
/**
 * 使用JavaMail API发送邮件
 * @author Administrator
 *
 */
public class JavaMailSender {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Transport transport=null; //Transport对象负责发送邮件
        try{//设置邮件发送环境
            Properties props=new Properties();
            props.put("mail.transport.protocol","smtp");//邮件发送协议
            //smtp服务器的地址 如:smtp.sina.com.cn
            props.put("mail.smtp.host","smtp.sina.com.cn");
            //smtp服务器是否需要用户认证，默认为false
            props.put("mail.smtp.auth","true"); //注意是"true"，并非true

            //设置认证信息：用户名和密码
            Authenticator auth=new Authenticator(){
                protected PasswordAuthentication getPasswordAuthentication(){
                    return new PasswordAuthentication("dongkk","password");
                }
            };

            Session session=Session.getInstance(props,auth);

            Message msg=new MimeMessage(session);
            msg.setFrom(new InternetAddress("[e-mail]"));
            msg.setRecipient(Message.RecipientType.TO,
                    new InternetAddress("[e-mail]"));
            msg.setSubject("Test Mail");
            msg.setSentDate(new Date());
            msg.setText("Java Mail API");


            transport=session.getTransport();
            transport.send(msg);

            System.out.println("邮件发送成功！");

        }catch(MessagingException e){ e.printStackTrace();
        }finally{
            try{
                transport.close();
            }catch(Exception e){}
        }
    }
}

package com.bb.basic.javamail;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.*;
/**
 * 使用JavaMail API发送邮件
 * @author Administrator
 *
 */
public class JavaMailSender {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Transport transport=null; //Transport对象负责发送邮件
		try{//设置邮件发送环境
			Properties props=new Properties();  
			props.put("mail.transport.protocol","smtp");//邮件发送协议
			//smtp服务器的地址 如:smtp.sina.com.cn
			props.put("mail.smtp.host","smtp.sina.com.cn");
			//smtp服务器是否需要用户认证，默认为false
			props.put("mail.smtp.auth","true"); //注意是"true"，并非true
			
			//设置认证信息：用户名和密码
			Authenticator auth=new Authenticator(){
				protected PasswordAuthentication getPasswordAuthentication(){
					return new PasswordAuthentication("dongkk","password");
				}
			};
			
			Session session=Session.getInstance(props,auth);
			
			Message msg=new MimeMessage(session);
			msg.setFrom(new InternetAddress("[e-mail]"));
			msg.setRecipient(Message.RecipientType.TO,
					new InternetAddress("[e-mail]"));
			msg.setSubject("Test Mail");
			msg.setSentDate(new Date());
			msg.setText("Java Mail API");
			
			
			transport=session.getTransport();
			transport.send(msg);
			
			System.out.println("邮件发送成功！");
			
		}catch(MessagingException e){ e.printStackTrace();
		}finally{
			try{
				transport.close();
			}catch(Exception e){}
		}
    }
}

 

 

二、使用JavaMail 接收邮件

 package com.bb.basic.javamail;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.*;
public class JavaMailSSLReceiver {
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Properties props=new Properties();
  Session session=Session.getDefaultInstance(props);
  //第1个参数为接受协议，第2个参数为邮件接收服务器的地址，第三个参数为pop3协议的端口，最后两个为用户名和密码
  URLName url=new URLName("pop3","pop.sina.com.cn",110,null,"dongkk","password");
  //使用SSL加密传输协议,gmail可以使用ssl协议来保证邮件传输的安全，使用SSL的POP3S的默认端口为995。
  //URLName url=new URLName("pop3s","pop.gmail.com",995,null,"masterspring","spring");

  Store store=null;
  Folder inbox=null;
  try{
   store=session.getStore(url);
   //使用URLName指定Session邮件环境，包括认证信息
            store.connect();  //连接邮件服务器

   //从邮件服务器中返回邮箱内的信息
   inbox=store.getFolder("INBOX");
   inbox.open(Folder.READ_ONLY);  //打开Folder
   FetchProfile fp=new FetchProfile();
   fp.add(FetchProfile.Item.ENVELOPE);

   Message[] msgs=inbox.getMessages();
   inbox.fetch(msgs, fp);

   //显示邮件信息
   for(int i=0;i<msgs.length;i++){
    String from=msgs[i].getFrom()[0].toString();
    InternetAddress id=new InternetAddress(from);
    System.out.println();
    System.out.println("发送者:"+id.getPersonal()+"/"+id.getAddress());

    System.out.println("标题:"+msgs[i].getSubject());
    System.out.println("大小:"+msgs[i].getSize());
    System.out.println("时间:"+msgs[i].getSentDate());
   }
  }catch(Exception er){
    System.out.println("发生异常："+er.toString());
  }finally{
   try{
    inbox.close(false);
    store.close();
   }catch(Exception e){}
  }
 }  }