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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*"
  • How are you trying to load it, when using it locally? – nmtoken Apr 6 '17 at 7:23
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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!

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