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
return fileName;
	}
	/**
	 * Generates a file name for output attachment.
	 * 
	 * @param request
	 * @param format
	 * @return the file name
	 */
	public static String generateFileName( HttpServletRequest request,
			String format )
	{
		String baseName = null;
		BaseAttributeBean attrBean = (BaseAttributeBean) request
				.getAttribute( IBirtConstants.ATTRIBUTE_BEAN );
		if ( attrBean != null )
		{
			baseName = attrBean.getReportDesignName( );
			if ( baseName == null || baseName.length( ) == 0 )
				baseName = attrBean.getReportDocumentName( );
		}
		String fileName = generateFileNameWithoutExtension( baseName );
		
		String extensionName = getExtensionName( format );
		if ( extensionName != null && extensionName.length( ) > 0 )
		{
			fileName += "." + extensionName; 
		}
		return fileName;
	}