Bug 200812 Issue when remove one separator setting in viewer.property[0002]
Description: Issue when remove one separator setting in viewer.property Build number:2.2.1.v200708220927 Steps to reproduce: 1. Deploy birt. 2. Open viewer.properties under WEB-INF folder. 3. Delete "viewer.sep.0=," line 4. Start server. 5. Preview report. 6. Export Data, select columns and select "Comma(,)", click OK. Expected result: Comma(,) isn't in the separator list. Actual result: Nothing happened after step6 and no error logs. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
{
		if ( reportDesignName == null )
			return null;
		String[] result = reportDesignName.split( "\\." ); 
		String extensionName = result[result.length - 1];
		String configFileName = reportDesignName.substring( 0, reportDesignName
				.length( )
				- extensionName.length( ) )
				+ IBirtConstants.SUFFIX_DESIGN_CONFIG;
		return configFileName;
	}
	/**
	 * Get current format of parameter.
	 * 
	 * @param request
	 *            HttpServletRequest
	 * @param paramName
	 *            String
	 * 
	 * @return String
	 */
	public static String getFormat( HttpServletRequest request, String paramName )
	{
		if ( request == null || paramName == null )
			return null;
		return getParameter( request, paramName + "_format" ); 
	}
	/**
	 * @return the isWorkingFolderAccessOnly
	 */