commit | 54670a28cb0d07a2caa84465115f58258072187f | [log] [tgz] |
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author | Linux Build Service Account <lnxbuild@localhost> | Sun Jan 16 14:16:43 2022 -0800 |
committer | Linux Build Service Account <lnxbuild@localhost> | Sun Jan 16 14:16:43 2022 -0800 |
tree | 5520f8b348fa75934708b0b968252192d513274b | |
parent | 90525c91fd63e2f3cff8c37b33aabf8b141dce7d [diff] | |
parent | 058b4a1702209887fc6c33e666b2643a25561fe3 [diff] |
Merge 058b4a1702209887fc6c33e666b2643a25561fe3 on remote branch Change-Id: I6263b4efa140668bf89e48e524c5e1b728ad8ced
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>