commit | f6f4ef58a21f8b12af417427e8607f52c5a7b147 | [log] [tgz] |
---|---|---|
author | Adrian Stabiszewski <github@grundid.de> | Tue Jan 31 20:49:22 2017 +0100 |
committer | GitHub <noreply@github.com> | Tue Jan 31 20:49:22 2017 +0100 |
tree | 8626b164f701df1a495de0c8d0841f53a8e75d44 | |
parent | bd57e8d754d45d42f97f97f81fbd08585d13bfa4 [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>1.8</version> </dependency>