commit | b4a331b07e002be44b4db97a5969e5b8a2eeeaa9 | [log] [tgz] |
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author | Linux Build Service Account <lnxbuild@localhost> | Wed Jan 26 00:15:21 2022 -0800 |
committer | Linux Build Service Account <lnxbuild@localhost> | Wed Jan 26 00:15:21 2022 -0800 |
tree | df4b69f514e76000986d5966d8d28c766b1f3a43 | |
parent | 484b3b00aada60909c119e35ac22c420685e1d1c [diff] | |
parent | f0861752f6ced47f33db3ccac54bf3ac39e121f3 [diff] |
Merge f0861752f6ced47f33db3ccac54bf3ac39e121f3 on remote branch Change-Id: If8f9de4148d1afa0f90c9b47382ca79accd98b2a
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>