jsp 檔案下載功能代碼

代碼如下

複製代碼

String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; String SCname=null; Cookie cookies[]=request.getCookies(); Cookie sCookie=null; String did = request.getParameter("id"); String qx="0"; String theurl=null; if (did!=null){  Statement stmtd=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);  ResultSet Rsd=stmtd.executeQuery("Select * from hl_down where id="+did);  if(Rsd.next()) {   theurl=Rsd.getString("url");   qx=Rsd.getString("qx");  }  Rsd.close();  stmtd.close();   //sCookie=cookies[];  //out.print(cookies.length);  //return ;  if(qx.equals("1")){   if(cookies!=null){    if(cookies.length>1){       SCname=java.net.URLDecoder.decode(cookies[1].getValue(),"gb2312");    }   }   if (SCname==null){    response.sendRedirect("login.jsp");    return ;   }  }  response.sendRedirect(theurl);  return ; }