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Overview

Is it A few customers have asked if it is possible to retrieve data layers from our a WFS in GeoJSON format?, the answer is Yes. Just follow the steps below.

Step-by-step guide

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• First you need to add the following to your map file.

OUTPUTFORMAT
  NAME "geojson"
  DRIVER "OGR/GEOJSON"
  MIMETYPE "application/json; subtype=geojson"
  FORMATOPTION "STORAGE=stream"
  FORMATOPTION "FORM=SIMPLE"
END

For example:

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• Then you need to add the following two options to your LAYER or MAP METADATA

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• 
  "wfs_getfeature_formatlist” "geojson"

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For example:

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• Now in your WFS call add the following &outputformat=geojson. This will return GeoJSON directly in the browser, if you need it to download, you can change the FORMATOPTION to FORM=ZIP.

For example:

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More information available here more information please see the MapServer documentation - http://mapserver.org/output/ogr_output.html.