servlet或action中获取项目物理路径或虚拟路径

String basePath = this.request.getScheme() + "://"
		        + this.request.getServerName() + ":"
		        + this.request.getServerPort()+this.request.getContextPath();//例如：http://localhost:8080/Test虚拟路径
		
		String realPath = ServletActionContext.getServletContext().getRealPath("images\\fanhui");//物理路径 例：C:Tomact/webapps/Test/images/fanhui