Server-side implementation file Download function code

Package com.cn;import java.io.bufferedinputstream;import java.io.bufferedoutputstream;import  java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import  java.io.outputstream;import java.net.urlencoder;import javax.servlet.servletexception;import  javax.servlet.annotation.webservlet;import javax.servlet.http.httpservlet;import  javax.servlet.http.httpservletrequest;import javax.servlet.http.httpservletresponse;/** *  servlet implementation class download */@WebServlet ("/download") public class  Download extends httpservlet {    private static final long  serialVersionUID = 1L;    /**     *  @see  httpservlet#httpservlet ()      */    public download ()  {       &nbSp;super ();         // todo auto-generated constructor  stub    }    /**     *  @see   Httpservlet#doget (httpservletrequest request, httpservletresponse     *       response)      */    protected  void doget (httpservletrequest request,             httpservletresponse response)  throws ServletException, IOException  {        string name =  "aaa.*";//  file name          string uploadpath = uploadfilehelper.getrepositorypath ()  +  "//";//  File source         string filepath =  name;        string filename = name;           //processing file name contains Chinese, browser garbled         if  ( Request.getheader ("User-agent"). toLowerCase (). IndexOf ("Firefox")  > 0)  {             filename = new string (FileName.getBytes (" UTF-8 "), " iso8859-1 ");// firefox browser         } else  {            if  (Request.getHeader (" User-agent "). toUpperCase (). IndexOf (" MSIE ")  > 0)  {                 filename = urlencoder.encode (fileName,  " UTF-8 ");// ie browser             }         } &nBsp;      response.setcontenttype ("Text/plain");         response.setheader ("Location",  filename);         response.reset ();         response.setheader ("Cache-Control",   "max-age=0");         response.setheader ("Content-Disposition",   "Attachment; filename="                  + filename);         bufferedinputstream  bis = null;        BufferedOutputStream bos  = null;        outputstream fos = null;         InputStream fis = null;         filepath = uploadpath + filepath;        fis = new  fileinputstream (FilePath);        bis = new  Bufferedinputstream (FIS);        fos =  Response.getoutputstream ();        bos = new  Bufferedoutputstream (FOS);        int bytesread = 0;         byte[] buffer = new byte[5 *  1024];        while  ((bytesread = bis.read (buffer))  != -1)  {            bos.write ( Buffer, 0, bytesread);//  send the file to the client         }         bos.close ();          bis.close ();         fos.close ();         fis.close ();     }    /**      *  @see  httpservlet#dopost (httpservletrequest request,  Httpservletresponse     *      response)       */    protected void dopost (HttpServletRequest request,             httpservletresponse response)  throws ServletException, IOException {         Doget (request, response);     }}

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Server-side implementation file Download function code