| commit | fe528206475a1125af18ba7bd1dff9d562dfaede | [log] [tgz] |
|---|---|---|
| author | Adrian Stabiszewski <github@grundid.de> | Sat Nov 14 20:09:39 2015 +0100 |
| committer | Adrian Stabiszewski <github@grundid.de> | Sat Nov 14 20:09:39 2015 +0100 |
| tree | 286ae63a131e32d8aac7bd21bba9353edc6263a5 | |
| parent | f4c606f4855c9d63709d85cc94b341aaff5fd45b [diff] | |
| parent | 660c84a87066a5bff1830ba4d09a56d8d83e035c [diff] |
Merge pull request #25 from pigelvy/patch-1 Update <version> to 1.5.1 in README.md
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>1.5.1</version> </dependency>