jsp下载 java BufferedInputStream 读取excel文件 这样就不出...

//下载
response.setContentType("text/html;charset=utf-8");
try {
request.setCharacterEncoding("UTF-8");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
BufferedInputStream bis = null;
BufferedOutputStream bos = null;

String downLoadPath ="c:\\huiyuan.xls";
try {
long fileLength = new File(downLoadPath).length();
response.setContentType("application/x-msdownload;");
response.setHeader("Content-disposition", "attachment; filename="
+ new String("会员管理名单.xls".getBytes("utf-8"), "ISO8859-1"));
response.setHeader("Content-Length", String.valueOf(fileLength));
bis = new BufferedInputStream(new FileInputStream(downLoadPath));
bos = new BufferedOutputStream(response.getOutputStream());
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
try {
if(bis!=null)
bis.close();
if(bos!=null)
bos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}