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
}
				paramName = urlEncode( paramName, ISO_8859_1_ENCODE );
				paramValue = urlEncode( paramValue, UTF_8_ENCODE );
				queryString += ( isFirst ? "" : PARAMETER_SEPARATOR ) + paramName + EQUALS_OPERATOR + paramValue; 
				isFirst = false;
			}
		}
		if ( nullParams != null && nullParams.size( ) > 0 )
		{
			Iterator i = nullParams.iterator( );
			while ( i.hasNext( ) )
			{
				String paramName = (String) i.next( );
				if ( paramName != null && !paramName.equalsIgnoreCase( name ) )
				{
					paramName = urlEncode( paramName, UTF_8_ENCODE );
					queryString += ( isFirst ? "" : PARAMETER_SEPARATOR ) + PARAM_ISNULL + EQUALS_OPERATOR + paramName;  
					isFirst = false;
				}
			}
		}
		if ( name != null && name.length( ) > 0 ) 
		{
			if ( getParameter( request, name ) == null )
			{
				String paramValue = value;
				paramValue = urlEncode( paramValue, UTF_8_ENCODE );
				queryString += ( isFirst ? "" : PARAMETER_SEPARATOR ) + name + EQUALS_OPERATOR + paramValue; 
				isFirst = false;
			}