| commit | 90525c91fd63e2f3cff8c37b33aabf8b141dce7d | [log] [tgz] |
|---|---|---|
| author | Linux Build Service Account <lnxbuild@localhost> | Sun Apr 18 10:38:52 2021 -0700 |
| committer | Linux Build Service Account <lnxbuild@localhost> | Sun Apr 18 10:38:52 2021 -0700 |
| tree | 5520f8b348fa75934708b0b968252192d513274b | |
| parent | 8c6b8beaf3c721e5fbcdf37a6ea0464ec4c8b7cd [diff] | |
| parent | 35f2dfdbfc42cd410c2a8ad16b44538a59a55237 [diff] |
Merge 35f2dfdbfc42cd410c2a8ad16b44538a59a55237 on remote branch Change-Id: Idbf90dfc746620c87002e560d6641a8af174acaa
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>