Bug 147407 Preview the attached report in the web viewer first time and then click the TOC button will cause NPE error
Description: It just can be reprouduced at first time preview. Step to reproduce: 1. please use attach report file 2. preview it in the web viewer 3. click the "Toggle table of contents" button Actual result: As the atteched screenshot shows,There is a NPE error.And if you preview it in the Web viewer again, the phenomenon is disappear.But reopen the eclipse and preview it at first time, it will be occured.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
}
	/**
	 * Get named parameter as integer from http request. parameter names and
	 * values are all in iso-8859-1 format in request.
	 * 
	 * @param request
	 * @param parameterName
	 * @return
	 */
	protected static int getParameterAsInt( HttpServletRequest request,
			String parameterName )
	{
		int iValue = -1;
		String value = getParameter( request, parameterName );
		if ( value != null && value.length( ) > 0 )
		{
			try
			{
				iValue = Integer.parseInt( value );
			}
			catch ( NumberFormatException ex )
			{
				iValue = -1;
			}
		}
		return iValue;
	}
	/**
	 * Get named parameters from http request. parameter names and values are
	 * all in iso-8859-1 format in request.