geotools 解析GeoJson

Maven:

<dependency>
  <groupId>org.geotools</groupId>
  <artifactId>gt-geojson</artifactId>
  <version>${geotools.version}</version>
</dependency>

Here is a small example from the test cases:

GeometryJSON gjson = new GeometryJSON();
// be sure to strip whitespace
String json = "{'type':'Point','coordinates':[100.1,0.1]}";

Reader reader = new StringReader(json);
Point p = gjson.readPoint( reader );

Working with Features is also supported:

FeatureJSON fjson = new FeatureJSON();
StringWriter writer = new StringWriter();

fjson.writeFeature(feature(1), writer);

String json = writer.toString();