截取url参数

/**
     * 截取url参数
     * 
     * @param strURL
     * @return
     * @see
     */
    public static String TruncateUrlPage(String strURL)
    {
        String strAllParam = null;
        String[] arrSplit = null;

        strURL = strURL.trim().toLowerCase();

        arrSplit = strURL.split("[?]");
        if (strURL.length() > 1)
        {
            if (arrSplit.length > 1)
            {
                if (arrSplit[1] != null)
                {
                    strAllParam = arrSplit[1];
                }
            }
        }

        return strAllParam;
    }