commit	0a3f43d92ad5792c5b4b498ed882d515197e6f75	[log] [tgz]
author	Neil Fuller <[email protected]>	Wed Oct 20 16:05:49 2021 +0000
committer	Automerger Merge Worker <[email protected]>	Wed Oct 20 16:05:49 2021 +0000
tree	df4b69f514e76000986d5966d8d28c766b1f3a43
parent	74b6fe50af979b998c0be828090c6c96cee8fed9 [diff]
parent	660889e8be0ccecdab3addbce44da13fc890fa32 [diff]

tree: df4b69f514e76000986d5966d8d28c766b1f3a43

README.md

GeoJson POJOs for Jackson

A small package of all GeoJson POJOs (Plain Old Java Objects) for serializing and deserializing of objects via JSON Jackson Parser.

Usage

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);

Maven Central

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>