root/tools/routingservice/trunk/templates/multilinestring_geojson.st

{
        "type":"FeatureCollection",
        "features":
        [
$edges:{ e |
                \{
                        "id":"$e.id$",
                        "properties":\{\},
                        "type":"Feature",
                        "geometry":
                        \{
                                "type":"MultiLineString",
                                "coordinates":[[$e.edge$]]
                        \}
                \}
};separator=","$
        ],
        "crs":
        {
                "properties":
                {
                        "code":"$srid$"
                },
                "type":"EPSG"
        }
}