commit | 8066aa12e989065804eb944e398e14acc4adf735 | [log] [tgz] |
---|---|---|
author | adrian <jenkins@grundid.de> | Mon Oct 14 07:50:00 2019 +0200 |
committer | adrian <jenkins@grundid.de> | Mon Oct 14 07:50:00 2019 +0200 |
tree | b34cedc7420829e9701a48bed023988def53b879 | |
parent | f49cd96e8c344b4a76b16c3de0486df31b2c6b3e [diff] |
[maven-release-plugin] prepare for next development iteration
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>