在Fitnesse中获取!today变量的子字符串

public class FitnesseHelper {
    public static String getSubstringOfTodayVariable(String start, String end) {
        String today = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
        int startIndex = today.indexOf(start);
        int endIndex = today.indexOf(end);
        if (startIndex != -1 && endIndex != -1 && startIndex < endIndex) {
            return today.substring(startIndex + start.length(), endIndex);
        }
        return "";
    }
}

|script|FitnesseHelper|
|getSubstringOfTodayVariable|start|end|