function genSearchObj(url,page,pageSize,keyword){
  var params = {};
  params.url = url;
  params.page = page;
  params.pageSize = pageSize;
  params.cond = keyword;
  return params;
}
function mockFormSubmit(params){
  var form = $('<form />', {action : params.url, method:"post", style:"display:none;"}).appendTo('body');
  $.each(params, function(k, v) {
     if ( k != "url" ){
       form.append('<input type="hidden" name="' + k +'" value="' + v +'" />');
     }
  });
  form.append('<input type="hidden" name="csrfToken" value="' + $("#csrf_token").val() + '" />' );
  form.submit();
}

var dlform = document.createElement('form');
dlform.style = "display:none;";
dlform.method = 'post';
dlform.action = '../fileServlet';
dlform.target = 'callBackTarget';
var hdnFilePath = document.createElement('input');
hdnFilePath.type = 'hidden';
hdnFilePath.name = 'filePath';
hdnFilePath.value = filePath;
dlform.appendChild(hdnFilePath);
document.body.appendChild(dlform);
dlform.submit();
document.body.removeChild(dlform);