分享一个收邮件的类，使用相当简单。

   分享一个收邮件的类，演示Iterable的用法，实现自己的Iterator,  该类使用非常简单，如下：

 

 

 

		Properties mailPr = new Properties();
		mailPr.setProperty("Pop3Host","pop3.sina.com.cn");
		mailPr.setProperty("User",” ××××@sina.com.cn“);
		mailPr.setProperty("Password", “×××××”);

		mr = new MailReceiver(mailPr);



		mr = new MailReceiver(mailPr);
		try {
			mr.read();
//遍历所有邮件
                	for (Iterator<Message> iter = mr.iterator(); iter.hasNext();) {
				Message msg = iter.next();
         //msg 就是读出的邮件

                         }
		} catch (MessagingException e1) {
			e1.printStackTrace();
			return;
		}

 

 

  主要包含了两个类，如下，

  1 .   MailReceiver.java 

 

package zhang.stony.mail;

import java.util.Iterator;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Store;

/**
 * @author Stony Zhang
 * @E-Mail [email protected]
 * @QQ 55279427
 * @Createdate 2009-9-5
 * 
 * @Copyright the author, If you want to use the code, you must keep the
 *            author's information.
 */
public class MailReceiver implements Iterable<Message> {
	private Session session;
	MailSetting mSetting;

	public MailReceiver(Properties p) {
		mSetting = new MailSetting(p);
		final String username = mSetting.getUser();
		final String password = mSetting.getPassword();
		Properties props = new Properties();
		props.put("mail.smtp.host", mSetting.getPop3Host());
		props.put("mail.smtp.auth", "true");
		session = Session.getDefaultInstance(props, new Authenticator() {
			public PasswordAuthentication getPasswordAuthentication() {
				return new PasswordAuthentication(username, password);
			}
		});
	}

	Folder folder = null;
	Message[] message;
	Store store;

	public void read() throws MessagingException {
		store = session.getStore("pop3");
		store.connect(mSetting.getPop3Host(), mSetting.getUser(), mSetting
				.getPassword());
		folder = store.getFolder("INBOX");
		folder.open(Folder.READ_WRITE);
		message = folder.getMessages();

	}

	public void close() throws MessagingException {
		if (folder != null) {
			try {
				folder.close(true);
			} catch (Exception e) {
			}

			store.close();

		}
	}

	public Iterator<Message> iterator() {
		return new Iter();
	}

	private class Iter implements Iterator<Message> {
		int currrent_msg_index=0;
		Message curMsg;

		public boolean hasNext() {
			return currrent_msg_index <= message.length - 1;
		}

		public Message next() {
			curMsg = message[currrent_msg_index++];
			return curMsg;
		}

		public void remove() {
			try {
				curMsg.setFlag(Flags.Flag.DELETED, true);
			} catch (MessagingException e) {
				e.printStackTrace();
			}
		}
	}

}

 

 

   2. MailSetting.java

 

package zhang.stony.mail;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * @author Stony Zhang  
 * @E-Mail [email protected] 
 * @QQ 55279427 
 * @Createdate 2009-9-5 
 *
 * @Copyright, everyone can use the code freely, but you must keep the author's information.
 */
public class MailSetting {
	private String smtpHost;
	private String pop3Host;
	private String user ;
	private String password;

	
	public MailSetting(String configFile){
		try {
			InputStream in = new FileInputStream(configFile);
			
			Properties prop = new Properties();
			prop.load(in);
			setPropertiesAttri(prop);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public MailSetting(Properties pr){
		setPropertiesAttri(pr);
	}
	
	public MailSetting(String host,String u,String p){
		this.smtpHost=host;
		this.user=u;
		this.password=p;
	}
	
	private void setPropertiesAttri(Properties prop) {
		try {
//			String conf = AppContest.getStartupPath() + "config/MailSetting.properties";


			this.setSmtpHost(prop.getProperty("SmtpHost"));
			this.setPop3Host(prop.getProperty("Pop3Host").toString());
			this.setUser(prop.getProperty("User").toString());
			this.setPassword(prop.getProperty("Password").toString());
		} catch (Exception ex) {
			System.err.println("ex1 in MailSetting:" + ex.toString());
		}
	}
	
	
	public String getSmtpHost() {
		return smtpHost;
	}

	public void setSmtpHost(String smtpHost) {
		this.smtpHost = smtpHost;
	}
	public String getPop3Host() {
		return pop3Host;
	}
	
	public void setPop3Host(String pop3Host) {
		this.pop3Host = pop3Host;
	}

	public String getUser() {
		return user;
	}

	public void setUser(String user) {
		this.user = user;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}
}

 

 

    关于JavaMail发送邮件，请参阅 JavaMail发送html格式的邮件