code: public static void logCommError(Exception e, String url, String appKey, String method,
                                      byte[] content) {
          if (!needEnableLogger) {
              return;
          }
          String contentString = null;
          try {
              contentString = new String(content, "UTF-8");
              logCommError(e, url, appKey, method, contentString);
          } catch (UnsupportedEncodingException e1) {
              e1.printStackTrace();
          }
      }
docs: 通讯错误日志