| commit | 1c57a376e097c517edeba2310ab6161370759084 | [log] [tgz] |
|---|---|---|
| author | android-build-team Robot <android-build-team-robot@google.com> | Fri Jun 04 03:03:07 2021 +0000 |
| committer | android-build-team Robot <android-build-team-robot@google.com> | Fri Jun 04 03:03:07 2021 +0000 |
| tree | 5520f8b348fa75934708b0b968252192d513274b | |
| parent | b52060ee66332122a44aa86751360c70dd9fd322 [diff] | |
| parent | 74b6fe50af979b998c0be828090c6c96cee8fed9 [diff] |
Snap for 7422738 from 74b6fe50af979b998c0be828090c6c96cee8fed9 to tm-release Change-Id: I74a366f4d73f34c1012320422d7c9a021b564899
A small package of all GeoJson POJOs (Plain Old Java Objects) for serializing and deserializing of objects via JSON Jackson Parser.
If you know what kind of object you expect from a GeoJson file you can directly read it like this:
FeatureCollection featureCollection = new ObjectMapper().readValue(inputStream, FeatureCollection.class);
If you want to read any GeoJson file read the value as GeoJsonObject and then test for the contents via instanceOf:
GeoJsonObject object = new ObjectMapper().readValue(inputStream, GeoJsonObject.class); if (object instanceof Polygon) { ... } else if (object instanceof Feature) { ... }
and so on.
Or you can use the GeoJsonObjectVisitor to visit the right method:
GeoJsonObject object = new ObjectMapper().readValue(inputStream, GeoJsonObject.class); object.accept(visitor);
Writing Json is even easier. You just have to create the GeoJson objects and pass them to the Jackson ObjectMapper.
FeatureCollection featureCollection = new FeatureCollection(); featureCollection.add(new Feature()); String json= new ObjectMapper().writeValueAsString(featureCollection);
You can find the library in the Maven Central Repository.
<dependency> <groupId>de.grundid.opendatalab</groupId> <artifactId>geojson-jackson</artifactId> <version>1.8.1</version> </dependency>