commit | 5b2667a884ae8aa664ad22a0a332487f18f519a7 | [log] [tgz] |
---|---|---|
author | Adrian Stabiszewski <github@grundid.de> | Fri May 29 20:58:10 2015 +0200 |
committer | Adrian Stabiszewski <github@grundid.de> | Fri May 29 20:58:10 2015 +0200 |
tree | a520d841140f510e5e4ca428af762569a7f2800a | |
parent | 7736da0bd1455c5299426c08b2f9e9199a6ec352 [diff] |
release update
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 what 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>1.5</version> </dependency>