【JTS】GeoJson的生成与解析

环境

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

直接上代码

代码

• wkt格式的geometry转成json格式

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;
    }

• json格式转wkt格式

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;
    }

 

 

导入jar包：

gt-geojson-9.3.jar，json-simple-1.1.1.jar，jts-1.8.jar

 

1.由wkt格式的geometry生成geojson：

 

1. /**

2. * 由wkt格式的geometry生成geojson

3. * @param wkt

4. * @return

5. */

6. public static String geoToJson(String wkt){

7. String json = null;

8. try{

9. WKTReader reader = new WKTReader();

10. Geometry geometry = reader.read(wkt);

11. StringWriter writer = new StringWriter();

12. GeometryJSON g = new GeometryJSON();

13. g.write(geometry,writer);

14. json = writer.toString();

15. }catch(Exception e){

16. e.printStackTrace();

17. }

18. return json;

19. }

2.将geojson解析为geometry的wkt形式

 

1. /**

2. * 将geojson解析为geometry的wkt形式

3. * @param geoJson

4. * @return

5. */

6. public static String jsonToWkt(String geoJson){

7. String wkt = null;

8. GeometryJSON gjson = new GeometryJSON();

9. Reader reader = new StringReader(geoJson);

10. try{

11. Geometry geometry = gjson.read(reader);

12. wkt = geometry.toText();

13. }catch(IOException e){

14. e.printStackTrace();

15. }

16. return wkt;

17. }