main.java

java mail写的简单邮件发送程序

/*
 * Main.java
 *
 * Created on 2007年6月12日, 下午3:51
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package mailtest;

import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.util.*;
/**
 *
 * @author Administrator
 */
public class Main {
    
    /** Creates a new instance of Main */
    public Main() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception{
        String hostname="localhost";
        String username ="admin";
        String password ="123456";
        
//set properties
        Properties props=System.getProperties();
        props.put("mail.transport.protocol","smtp");
        props.put("mail.store.protocol","imap");
        props.put("mail.smtp.class","com.sun.mail.smtp.SMTPTransport");
        props.put("mail.imap.class","com.sun.mail.imap.IMAPStore");
        props.put("mail.smtp.host","hostname");
//get aSession object
        
        Session mailsession = Session.getDefaultInstance(props,null);
        
//Get a Store object
        Store store = mailsession.getStore("imap");
//Connect
        store.connect(hostname,username,password);
        
//check inbox
        Folder folder=store.getFolder("inbox");
        folder.open(Folder.READ_WRITE);
        System.out.println("You have"+folder.getMessageCount()+"messages in inbox");
        System.out.println("You have"+folder.getUnreadMessageCount()+"unread messages in inbox.");
        
//read first Message in inbox
        Message msg=folder.getMessage(1);
        System.out.println("----the first message in inbox----");
        System.out.println("Form:"+msg.getFrom()[0]);
        System.out.println("Subject:"+msg.getSubject());
        System.out.println("Text:"+msg.getContent());
        
        //create a message
        msg =new MimeMessage(mailsession);
        InternetAddress[] toAddrs =InternetAddress.parse("[e-mail]",false);
        msg.setRecipients(Message.RecipientType.TO,toAddrs);
        msg.setSubject("hello");
        msg.setFrom(new InternetAddress("[e-mail]"));
        msg.setText("How are you");
        
//send amessage
        Transport.send(msg);
    }
}