从附件名连接到这个servlet!

DownloadServlet.java

package MailServlet;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

import java.util.*;

import javax.activation.*;

import javax.mail.*;

import javax.mail.internet.*;

/**

*

Title:

*

Description:

*

Copyright: Copyright (c) 2002

*

Company: Socix

* @author simon

* @version 1.0

*/

public class DownloadServlet extends HttpServlet

{

public void service(HttpServletRequest request, HttpServletResponse response)

throws IOException, ServletException

{

HttpSession session = request.getSession();

String contentType = request.getParameter("contenttype"); //附件的ContentType

int count = Integer.parseInt(request.getParameter("count")); //第几个BodyPart

Object body = session.getAttribute("body"); //邮件的MimeMultipart

if(body != null)

{

System.out.println("download Start!");

try

{

MimeMultipart mp = (MimeMultipart)body;

int i = mp.getCount();

BodyPart part = mp.getBodyPart(count);

contentType = part.getContentType();

String fileName = part.getFileName();

response.setContentType(contentType);

response.setHeader("Content-Disposition","attachment; filename=" + fileName);

System.out.println("download Start!" + part.getSize());

InputStream is = part.getInputStream();

ServletOutputStream out = response.getOutputStream();

BufferedInputStream buf = new BufferedInputStream(is);

byte[] data = new byte[2048];

int readed = buf.read(data);

while (readed != -1)

{

out.write(data,0,readed);

readed = buf.read(data);

}

out.flush();

out.close();

buf.close();

System.out.println("download Over !");

}

catch (Exception ex)

{

System.out.println("error : " + ex);

}

}

}

}