有关JAVAmail读取邮件的问题

[qq_36567914]

为什么我在设置附件下载地址的时候，能成功放在e盘d盘，但无法放到那下面的子目录中。。。

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import javax.mail.BodyPart;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
public class TestMail {
	 
	private MimeMessage mimeMessage = null ; 
	private String saveAttachPath = ""; // 附件下载后的存放目录
	private StringBuffer bodyText = new StringBuffer(); // 存放邮件内容的StringBuffer对象
	
	/**
	 * 构造函数,初始化一个MimeMessage对象
	 */

	public TestMail(MimeMessage mimeMessage) {
		this.mimeMessage = mimeMessage;
	}

	public void setMimeMessage(MimeMessage mimeMessage) {
		this.mimeMessage = mimeMessage;
	}
	
	/**
	 * 　*　获得发件人的地址和姓名 　
	 */
	public String getFrom() throws Exception{
		InternetAddress address[] = (InternetAddress[])mimeMessage.getFrom(); 
		String from = address[0].getAddress() ; 
		if(from == null){
			from  = " " ;
			System.out.println("未知发送来源");
		}
		
		String personal = address[0].getPersonal() ;
		if(personal == null){
			personal  = " " ;
			System.out.println("未知发送者");
		}
		
		String fromAddr = null ; 
		if (personal != null || from != null) {
			fromAddr = personal + "<" + from + ">";
			System.out.println("发送者是：" + fromAddr);
		} else {
			System.out.println("无法获得发送者信息.");
		}
		return fromAddr;
	}
	
	/**
	 * 　*　获得邮件主题 　
	 */
	public String getSubject() throws MessagingException {
		String subject = " " ;
		try{
			subject = MimeUtility.decodeText(mimeMessage.getSubject());  
			if (subject == null) {
				subject = "";
			}
		}catch(Exception e){
			e.printStackTrace(); 
		}
		return subject ; 
	}
	
	/**
	 * 判断此邮件是否已读，如果未读返回false,反之返回true
	 */
	public boolean isNew() throws MessagingException {
		boolean isNew = false ; 
		Flags flags = mimeMessage.getFlags() ;
		Flags.Flag[] flag = flags.getSystemFlags() ; //返回Flags对象中所有的系统标记
		for(int i = 0 ; i<flag.length ; i++){
			if(flag[i] == Flags.Flag.SEEN)
					isNew = true ; 
		}
		return isNew;
	}
	
	/**
	 * 判断此邮件是否包含附件
	 */
	public boolean isContainAttach(Part part) throws Exception{
		boolean attachFlag = false;
		if(part.isMimeType("multipart/*")){
			Multipart mp = (Multipart) part.getContent();
			for(int i = 0 ; i<mp.getCount() ; i++){
				BodyPart mPart = mp.getBodyPart(i);
				String disposition = mPart.getDisposition();
				if((disposition != null)
						&& ((disposition.equals(Part.ATTACHMENT)) || (disposition.equals(Part.INLINE))))
								//ATTACHMENT<附件> INLINE<嵌入>
				attachFlag = true;
			else if (mPart.isMimeType("multipart/*")){
				attachFlag = isContainAttach((Part) mPart);
			} else{
				String conType = mPart.getContentType();
				
				if (conType.toLowerCase().indexOf("application") != -1)
					attachFlag = true;
				if (conType.toLowerCase().indexOf("name") != -1)
					attachFlag = true;
			}	
		  }
		} else if (part.isMimeType("message/rfc822")) {
			attachFlag = isContainAttach((Part)part.getContent());
			}
	     return attachFlag;
	     
	}
	
	/**
	 * 保存附件
	 * @param part 邮件中多个组合体中的其中一个组合体
	 * @param destDir  附件保存目录
	 * @throws UnsupportedEncodingException
	 * @throws MessagingException
	 * @throws FileNotFoundException
	 * @throws IOException
	 */
	public static void saveAttachment(Part part, String destDir) throws UnsupportedEncodingException, MessagingException,
			FileNotFoundException, IOException {
		if (part.isMimeType("multipart/*")) {
			Multipart multipart = (Multipart) part.getContent();	//复杂体邮件
			//复杂体邮件包含多个邮件体
			int partCount = multipart.getCount();
			for (int i = 0; i < partCount; i++) {
				//获得复杂体邮件中其中一个邮件体
				BodyPart bodyPart = multipart.getBodyPart(i);
				//某一个邮件体也有可能是由多个邮件体组成的复杂体
				String disp = bodyPart.getDisposition();
				if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {
					InputStream is = bodyPart.getInputStream();
					saveFile(is, destDir, decodeText(bodyPart.getFileName()));
				} else if (bodyPart.isMimeType("multipart/*")) {
					saveAttachment(bodyPart,destDir);
				} else {
					String contentType = bodyPart.getContentType();
					if (contentType.indexOf("name") != -1 || contentType.indexOf("application") != -1) {
						saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));
					}
				}
			}
		} else if (part.isMimeType("message/rfc822")) {
			saveAttachment((Part) part.getContent(),destDir);
		}
	}
	
	/**
	 * 读取输入流中的数据保存至指定目录
	 * @param in 输入流
	 * @param fileName 文件名
	 * @param destDir 文件存储目录
	 * @throws FileNotFoundException
	 * @throws IOException
	 */
	private static void saveFile(InputStream in, String destDir, String fileName)
			throws FileNotFoundException, IOException {
		BufferedInputStream bis = new BufferedInputStream(in);
		BufferedOutputStream bos = new BufferedOutputStream(
				new FileOutputStream(new File(destDir+fileName)));
		int len = -1;
		while ((len = bis.read()) != -1) {
			bos.write(len);
			bos.flush();
		}
		bos.close();
		bis.close();
	}
	
	/**
	 * 文本解码
	 * @param encodeText 解码MimeUtility.encodeText(String text)方法编码后的文本
	 * @return 解码后的文本
	 * @throws UnsupportedEncodingException
	 */
	public static String decodeText(String encodeText) throws UnsupportedEncodingException {
		if (encodeText == null || "".equals(encodeText)) {
			return "";
		} else {
			return MimeUtility.decodeText(encodeText);
		}
	}

	
	/**
	 *　测试
	 */
	public static void main(String args[]) throws Exception{
		String host = "pop.163.com";
		String username = "*********";
		String password = "*************";    //邮箱信息
		String protocol = "pop3";
		
		Properties prop = new Properties();//Properties类用于读取Java的配置文件
		prop.setProperty("mail.pop3.store","pop3");
		prop.setProperty("mail.pop3.host","pop.163.com");
		Session session = Session.getDefaultInstance(prop, null);//Session类用于定义应用程序所需的环境信息
		
		
		Store store = session.getStore(protocol);
		store.connect(host, username, password);
		
		Folder folder = store.getFolder("INBOX");
		folder.open(Folder.READ_ONLY);
		Message message[] = folder.getMessages();
		System.out.println("邮件数量:　" + message.length);
		TestMail re = null;
		
		for (int i = 0;i < message.length; i++){
			re = new TestMail((MimeMessage) message[i]);
			System.out.println("邮件　" +(i+1) + "　发送人地址:　" + re.getFrom());
			System.out.println( "　是否已读:　" + re.isNew());
			System.out.println( "　是否包含附件:　"
					+ re.isContainAttach((Part) message[i]));
			System.out.println( "　主题:　" + re.getSubject());
			System.out.println();
			re.saveAttachment((Part)message[i],"D:\\cp1");
		}
	}
}

[qq_36567914]

为啥不能成功放入这些盘的文件夹中，要怎么改。。。。。。。