Bug 154325 Use input absolute path as the parameter in error message
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* 
	 * @param request
	 *            http request
	 * @param name
	 *            parameter name
	 * @param defaultValue
	 *            default parameter value
	 * @return parameter value
	 */
	public static String getReportParameter( HttpServletRequest request,
			String name, String defaultValue )
	{
		assert request != null && name != null;
		String value = getParameter( request, name );
		if ( value == null || ( (String) value ).trim( ).length( ) <= 0 ) 
		
		{
			value = ""; 
		}
		Map paramMap = request.getParameterMap( );
		String ISOName = toISOString( name );
		if ( paramMap == null || !paramMap.containsKey( ISOName ) )
		{
			value = defaultValue;
		}
		Set nullParams = getParameterValues( request, PARAM_ISNULL );
		if ( nullParams != null && nullParams.contains( name ) )
		{
			value = null;
		}