电子邮件系统 3----JavaMail POP3接收邮件示例 .

/**
 * CrazyItTest
 * 使用JavaMail 编写接收邮件示例
 */
package com.labci.javamail.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Properties;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
/**
 * @author Bill Tu(tujiyue/iwtxokhtd)
 * May 27, 2011[10:04:20 PM]
 *
 */
public class ReceiveEmailTest {
    private static final String  PROTOCOL = "pop3";
    private static final String  HOST = "pop3.163.com";
    private static final String USER = "iwtxokhtd";
    private static final String PASS="123456";

    private static Session getMailSession(){
        Properties props=new Properties();
        props.put("mail.store.protocol", PROTOCOL);
        props.put("mail.pop3.host", HOST);

        Session session=Session.getDefaultInstance(props);
        return session;
    }


    private static void receiveEmail() throws MessagingException, IOException{
        Store store=getMailSession().getStore();
        store.connect(HOST,USER,PASS);

        Folder receiveFolder=store.getFolder("inbox");//对于POP3协议此参数值只能是inbox
        receiveFolder.open(Folder.READ_WRITE);//设置收件夹打开后的读写权限

        int messageCount=receiveFolder.getMessageCount();
        System.out.println("总共拥有邮件数："+messageCount);

        if(messageCount>0){
            Message []messages=receiveFolder.getMessages();//得到所有的邮件
            for(int i=0;i<messages.length;i++){
                Message msg=messages[i];
                System.out.println("第"+(i+1)+"封邮件的主题为："+msg.getSubject()
                        +" ,其发送人地址为："+msg.getFrom()[0]);
                System.out.println("您是否要阅读此邮件？若要请输入yes,否则就输入no:");
                BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
                String input=br.readLine();
                if(input!=null && !"".equals(input)
                        &&"yes".equals(input.trim())){
                    msg.writeTo(System.out);//直接输出到控制台,当然也输出到文件中。
                }
            }
        }
        receiveFolder.close(true);//关闭邮件夹对象
        store.close();//断开连接


    }



    /**
     * @param args
     * @throws IOException
     * @throws MessagingException
     */
    public static void main(String[] args) throws MessagingException, IOException {
        receiveEmail();
    }
}

/**
 * CrazyItTest
 * 使用JavaMail 编写接收邮件示例
 */
package com.labci.javamail.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Properties;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
/**
 * @author Bill Tu(tujiyue/iwtxokhtd)
 * May 27, 2011[10:04:20 PM]
 *
 */
public class ReceiveEmailTest {
	private static final String  PROTOCOL = "pop3";
	private static final String  HOST = "pop3.163.com";
	private static final String USER = "iwtxokhtd";
	private static final String PASS="123456";
	
	private static Session getMailSession(){
		Properties props=new Properties();
		props.put("mail.store.protocol", PROTOCOL);
		props.put("mail.pop3.host", HOST);
		
		Session session=Session.getDefaultInstance(props);
		return session;
	}
	
	
	private static void receiveEmail() throws MessagingException, IOException{
		Store store=getMailSession().getStore();
		store.connect(HOST,USER,PASS);
		
		Folder receiveFolder=store.getFolder("inbox");//对于POP3协议此参数值只能是inbox
		receiveFolder.open(Folder.READ_WRITE);//设置收件夹打开后的读写权限
		
		int messageCount=receiveFolder.getMessageCount();
		System.out.println("总共拥有邮件数："+messageCount);
		
		if(messageCount>0){
			Message []messages=receiveFolder.getMessages();//得到所有的邮件
			for(int i=0;i<messages.length;i++){
				Message msg=messages[i];
				System.out.println("第"+(i+1)+"封邮件的主题为："+msg.getSubject()
						+" ,其发送人地址为："+msg.getFrom()[0]);
				System.out.println("您是否要阅读此邮件？若要请输入yes,否则就输入no:");
				BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
				String input=br.readLine();
				if(input!=null && !"".equals(input)
						&&"yes".equals(input.trim())){
					msg.writeTo(System.out);//直接输出到控制台,当然也输出到文件中。
				}
			}
		}
		receiveFolder.close(true);//关闭邮件夹对象
		store.close();//断开连接
		
		
	}
	
	
	
	/**
	 * @param args
	 * @throws IOException 
	 * @throws MessagingException 
	 */
	public static void main(String[] args) throws MessagingException, IOException {
		receiveEmail();
	}
}