code: public static void logBizDebug(String rsp) {
          if (!needEnableLogger) {
              return;
          }
          DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
          df.setTimeZone(TimeZone.getTimeZone(AlipayConstants.DATE_TIMEZONE));
          StringBuilder sb = new StringBuilder();
          sb.append(df.format(new Date()));
          sb.append("^_^");
          sb.append(rsp);
  
          if (blog.isDebugEnabled()) {
              blog.debug(sb.toString());
          }
      }
docs: 业务/系统错误日志