I have a GeoJSON file saved locally and it is also present on GeoServer. I can successfully load it as a vector layer in my OpenLayers map when pointing to its GeoServer URL.
Is it possible to load the locally saved file without the use of GeoServer?
This is the error I get when I try to load it locally:
Cross origin requests are only supported for protocol schemes:
http, data, chrome, chrome-extension, https*"
A quick overview, you can find countless answers for your 'problem' on the web:
Browsers (or more specific: clientside Javascript) in general are not permittet access to the local file system programmatically (without specific user interaction) (Same-Origin-Policy).
Your options here include
using HTML5 File API to let the user select a local file
a local http server instance (mainly for developement purposes), for example via Python 3.x
serving it via the public file system on your webserver (e.g. not locally)
There are tons of workarounds, but they are to be used with caution; the Same-Origin-Policy is a security implementation and its implications have good reasons to be followed!
