commit | 1cf7c7969207d62ae9a42ae844863b7dbd58ffea | [log] [tgz] |
---|---|---|
author | Adrian Stabiszewski <github@grundid.de> | Fri Mar 25 11:08:08 2016 +0100 |
committer | Adrian Stabiszewski <github@grundid.de> | Fri Mar 25 11:08:08 2016 +0100 |
tree | 8085b1f5cbd1169bf6f8539cb7d333a756017447 | |
parent | 3e186e30c4d97488a9db3bf8d4196cf229176e58 [diff] |
Version updated
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>1.6</version> </dependency>