Bug 155493 [Deploy] Pictures and chart pictures are lost when preview on Weblogic Server using WAR deploy
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
public static String getReport( HttpServletRequest request )
	{
		String filePath = getParameter( request, PARAM_REPORT );
		filePath = preProcess( filePath );
		filePath = createAbsolutePath( filePath );
		return filePath;
	}
	/**
	 * Get report document name.
	 * 
	 * @param request
	 *            http request
	 * @return report file name
	 * @throws AxisFault
	 */
	public static String getReportDocument( HttpServletRequest request )
	{
		String filePath = getParameter( request, PARAM_REPORT_DOCUMENT );
		filePath = preProcess( filePath );
		if ( "".equals( filePath ) ) 
		{
			filePath = generateDocumentFromReport( request );
			filePath = createDocumentPath( filePath, request );
		}
		else
		{
			filePath = createAbsolutePath( filePath );
		}
		return filePath;
	}