how can I use it as a service to open each sub folder from root about vscode-web HOT 1 CLOSED

Hi
I think you will have to code an extension for that
You'll have to code a filesystemprovider in an extension, and then, in the index.html file, you'll have to provide a window.product variable with dynamic folderUri

const currentUrl = new URL(window.location.href);
const path = currentUrl.pathname.substring(1);

window.product = {
  productConfiguration: {
    nameShort: "My Code Browser",
    ...
  },
  folderUri: {
    scheme: "myCustomScheme",
    path,
  }
}

And then in your extension you'll be able to use vscode.workspace.workspaceFolders[0].uri to know the current uri.
With the uri you'll be able to match the correct forlder to query on server.

from vscode-web.