code: public void add(String path, T obj) {
          try {
              String[] ss = Strings.splitIgnoreBlank(path, "/");
              add(obj, ss, 0);
          }
          catch (Exception e) {
              throw Lang.wrapThrow(e, "Wrong Url path format '%s'", path);
          }
      }
docs: 增加一个映射,将 obj 映射到 path 上,或 path 上的[?,*]