getmail.java

基于JavaMail API 实现的桌面程序,邮件收发器

/*
 * getMail.java
 *
 * Created on 2006年5月24日, 下午7:57
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package javamail;

/**
 *
 * @author freezing
 */
import java.util.*; 
import javax.mail.*; 
import javax.mail.internet.*; 
import java.util.Date; 
import javax.activation.*; 
import java.io.*; 
import javax.swing.*;
public class getMail
{
	private Store store;
	private Folder folder;
	private Message []message;
	private Properties pro;
	private String Host;
	private String Name;
	private String PSW; 
	private Session session;
	private int count;
        private Vector mailList;
	public getMail(String host,String name,String password)throws NoSuchProviderException
	{
		try
		{
			Host=host;
			Name=name;
			PSW=password;
                        mailList=new Vector(10,1);
			pro=System.getProperties();
			session=Session.getDefaultInstance(pro,null);
			store=session.getStore("pop3");
			store.connect(Host,Name,PSW);
			folder=store.getFolder("INBOX");
			folder.open(Folder.READ_ONLY);
			message=folder.getMessages();
			count=message.length;
			System.out.println(count);
		//	for(int i=0;i<message.length;i++)
		//	{
			//	System.out.println(i+": "+message[i].getFrom()[0]
			//					+"\t"+message[i].getSubject());
		//	}//end of Read Mail from WebServer and get the list		
		//	
		//begin to get the content of the spescial Mail
		//	BufferedReader reader = new BufferedReader (  new InputStreamReader(System.in));
		//	message[0].writeTo(System.out);	
		//System.out.println(((MimeMessage)message[0]).getContent());
		//getcontent()不包括邮件头writeTo()则包括邮件头.
		//-------------------------------------------------------
		}catch(MessagingException e)
		{
			System.out.println(e);
		}
	}
        public int MailCount()
        {
            return count;
        }
        public Vector vecMailList()
        {
            try{                    
            for(int i=0;i<message.length;i++)
	    {
                String temp=message[i].getFrom()[0]+"\t"+message[i].getSubject();
		//System.out.println(i+": "+temp);
                mailList.addElement(new String(temp));		
            }
            return mailList;
            }catch(MessagingException e)
            {
                System.out.println(e);
                JOptionPane.showMessageDialog(null,"无法从服务器端获取邮件列表,请检查客户端口设置!","警告",JOptionPane.WARNING_MESSAGE);
                return null;
            }
        }
	public void getMailHead(int index)
	{
		try{
			
		if(index>=0&&index<count)
		{
                    String temp=message[index].getFrom()[0]+"\t"+message[index].getSubject();
                    System.out.println(index+": "+temp);
                    //mailList.addElement(new String(temp));
		}
	  }
	  catch(MessagingException e)
	  {
	  	System.out.println(e);
	  }
	}
	public void getMailBody(int index)
	{
		try{
			System.out.println(((MimeMessage)message[index]).getContent());
		}catch(MessagingException e)
		{
			System.out.println(e);
		}
		catch(IOException e)
		{
			System.out.println(e);
		}
		
	}
	public void getMailAttach(int index)throws IOException,MessagingException
	{
            try{
		Multipart mp = (Multipart)message[index].getContent();
		for (int i=0, n=mp.getCount(); i<n; i++) 
		{ 
		 Part part = mp.getBodyPart(i);  
		 String disposition = part.getDisposition();  
		 System.out.println(disposition);
		if ((disposition != null) && ((disposition.equals(Part.ATTACHMENT)||
					(disposition.equals(Part.INLINE)))))

		 {   
		  saveFile(transCode(part.getFileName()), part.getInputStream()); 
		 }
		 else if(disposition==null)
		 {
		 	 MimeBodyPart mbp = (MimeBodyPart)part;
		 	 if(mbp.isMimeType("text/plain"))
		 	 {
		 	 	System.out.println("以下的文本格式");
                                String temp=(String)part.getContent();
		 	 	System.out.println(temp);
                                showTextDialog show=new showTextDialog();
                                show.setContent(temp);
                                show.setVisible(true);
		 	 }
		 	 else if(mbp.isMimeType("text/html"))
		 	 {
		 	 	System.out.println("网页格式");	
                                String temp=(String)part.getContent();
		 	 	System.out.println(temp);
                                showHtmlDialog app=new showHtmlDialog(temp);
                                app.setVisible(true);
		 	 }
		 }
		}
            }catch(IOException e)
            {
                System.out.println(e);
                JOptionPane.showMessageDialog(null,"无法下载附件!","警告",JOptionPane.WARNING_MESSAGE);
            }catch(MessagingException e)
            {
                System.out.println(e);
                JOptionPane.showMessageDialog(null,"会话交互失败!","警告",JOptionPane.WARNING_MESSAGE);
            }
	}
	public String transCode(String str)
	{
		try{
			str=new String(str.getBytes("ISO8859_1"),"gb2312");
			return str;
		}catch(Exception e)
		{
			return null;
		}
	}
	public void saveFile(String filename,InputStream is)
	{
		File file=new File(filename);
		System.out.println(filename);
		if(!file.exists())
		{
			try{
				
				System.out.println("creating file....");
				file.createNewFile();
				FileOutputStream out=new FileOutputStream(file);
				int c;
				while((c=is.read())!=-1)
				{
					out.write(c);
				}
				System.out.println("file created!!!");
                                JOptionPane.showMessageDialog(null,"附件已经保存在特定目录下,请查看!","信息",JOptionPane.PLAIN_MESSAGE);
				out.close();
				is.close();
			}catch(IOException e)
			{
				System.out.println(e);
                                JOptionPane.showMessageDialog(null,"无法下载附件!","警告",JOptionPane.WARNING_MESSAGE);
			}
		}
	}
	public static void main(String args[])throws NoSuchProviderException
	{
		getMail app=new getMail("pop3.163.com","starlights17","98905917");
		int m=4;
		app.getMailHead(m);
		//app.getMailBody(m);
                Vector vec;
//		try{
		//app.getMailAttach(m);
                    vec=app.vecMailList();
                    for(Object x:vec)
                    {
                        System.out.println((String)x);
                    }
//		}
//              catch(IOException e)
//		{
//			System.out.println(e);
//		}
//		catch(MessagingException e)
//		{
//			System.out.println(e);
//		}
	
	}	
}