<%@ page contentType="text/html;charset=GBK" %>

<%
 // 得到文件名字和路径
 String filename = request.getParameter("filename");
 String id=request.getParameter("id");

 
 String filepath=pageContext.getServletContext().getRealPath("/NoticeFile");

 // 设置响应头和下载保存的文件名
 //String CONTENT_TYPE = "text/html; charset=GBK";
 response.setContentType("application/x-msdownload");
 response.setContentType("APPLICATION/OCTET-STREAM");
 response.setHeader("Content-Disposition","attachment; filename=\"" +new   String(filename.getBytes("GBK"),"ISO_8859_1") + "\"");
 
 java.io.File file=new java.io.File(filepath +"\\"+ filename);
 if(file==null || !file.exists()){
  response.sendRedirect("downloaderror.jsp");
  //response.setContentType("text/html; charset=GBK");
  //String msg="文件不存在";
  //RequestDispatcher rd=null;
  //rd=request.getRequestDispatcher("/redirect.jsp");
  //ServletRequest req=pageContext.getRequest();
  //ServletResponse rps=pageContext.getResponse();
  //req.setAttribute("msg",msg);
  //rd.forward(req,rps);
  return ;
 }

  // 打开指定文件的流信息
 java.io.FileInputStream fileInputStream =new java.io.FileInputStream(file);
 
  
 // 写出流信息
 int i;
 while ((i=fileInputStream.read()) != -1) {
  response.getOutputStream().write(i);
 }
 fileInputStream.close();
 response.getOutputStream().close();
 out.clear();
 out = pageContext.pushBody();  

%>