GeoJSON相关操作

gt-geojson-14.2.jar，json-simple-1.1.1.jar，jts-1.8.jar

public String evaluate(String wkt) {

        String ret = null;
        try {
            Geometry geometry = reader.read(wkt);
            StringWriter writer = new StringWriter();
            GeometryJSON g = new GeometryJSON();
            g.write(geometry, writer);
            ret = writer.toString();
        } catch (Exception e) {
            LOGGER.error(e.getMessage(), e);
        }
        return ret;
    }

public String evaluate(String geoJson) {
        String ret = null;
        GeometryJSON gjson = new GeometryJSON();
        Reader reader = new StringReader(geoJson);
        try {
            Geometry geometry = gjson.read(reader);
            ret = geometry.toText();
        } catch (IOException e) {
            LOGGER.error(e.getMessage(), e);
        }
        return ret;
    }