commit	989b62c0dfe6771ea2a278259c1f7f5c6e78775e	[log] [tgz]
author	Neil Fuller <nfuller@google.com>	Thu Aug 06 14:40:56 2020 +0000
committer	Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>	Thu Aug 06 14:40:56 2020 +0000
tree	65054c253fdd75105b9ea0f26d5d55ca665f5c8a
parent	cfd5e8ffb76c3bc3cf83a69eee64deadb5672f2d [diff]
parent	2431afb27465e3663dbb545f1f46344367809649 [diff]

tree: 65054c253fdd75105b9ea0f26d5d55ca665f5c8a

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>