Bug 176786 Issue when use ${env.working.folder} as context path.[0601]
Description: Issue when use ${env.working.folder} as context path Build number:2.2.0.v20070308 Steps to reproduce: 1. Add environment variable as below: env.working.folder(D:\temp\working_folder) env.document.folder (D:\temp\document_folder) env.image.folder(D:\temp\image_folder) 2. Deploy WebViewerExample folder in Tomcat5.5.7 2. Set context parameter as attached with form like ${env.working.folder}. 3. Start Server Expected result: Content inside WebViewerExample folder is untouched. Actual result: After server is started, refresh and check the WebViewerExample folder. Only webcontent and WEB-INF folders are left, other folders and two sample reports disappear. Error log:N/A
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* @return
	 */
	protected static String getParameter( HttpServletRequest request,
			String parameterName, boolean isUTF )
	{
		String ISOParameterName = ( isUTF )
				? toISOString( parameterName )
				: parameterName;
		String value = request.getParameter( ISOParameterName );
		String encoding = request.getCharacterEncoding( );
		return toUTFString( value, encoding );
	}
	/**
	 * 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 );