commit | 28efcccfb08c236be90ff0cbadf974a68aefa2f3 | [log] [tgz] |
---|---|---|
author | Adrian Stabiszewski <github@grundid.de> | Tue Nov 29 11:35:48 2016 +0100 |
committer | GitHub <noreply@github.com> | Tue Nov 29 11:35:48 2016 +0100 |
tree | 3f54523db9d1ae615e09f96d218e645d526fb834 | |
parent | 1cf7c7969207d62ae9a42ae844863b7dbd58ffea [diff] | |
parent | 342c523f5385644e85b78885bfa8e572961b91d9 [diff] |
Merge pull request #32 from Babbleshack/mongo-deserializer-for-LngLatAlt Add fix to LngLatAlt deserilizer for mongo
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>1.6</version> </dependency>