Object to KML

Main class

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;

public class KmlWriter {

  public static void main(String[] args) throws IOException {
    List<Marker> stations = loadItems("stations");
    List<Marker> hotels = loadItems("hotels");
    toKml(hotels, stations);
  }

  static class Marker {
    double lat;
    double lon;
    String title;
    String comment;
    String icon;
  }

  private static List<Marker> loadItems(String path) throws IOException {
    File file = new File(path);
    FileReader reader = new FileReader(file);
    Gson gson = new Gson();
    JsonElement doc = gson.fromJson(reader, JsonElement.class);
    JsonElement payload = doc.getAsJsonObject().get("payload");

    List<Marker> items = new LinkedList<>();
    for (int id = 1; id < 10000; id++) {
      JsonElement each = payload.getAsJsonObject().get(String.valueOf(id));
      if (each != null) {
        JsonObject object = each.getAsJsonObject();
        JsonObject fields = object.get("field").getAsJsonObject();

        Marker newItem = new Marker();
        newItem.lat = object.get("lat").getAsDouble();
        newItem.lon = object.get("lon").getAsDouble();
        newItem.title = object.get("title").getAsString();
        newItem.comment = safe(fields.get("jr_ciudad"), fields.get("jr_direccion"));
        newItem.icon = object.get("icon").getAsString();
        items.add(newItem);
      }
    }
    reader.close();
    return items;
  }

  private static void toKml(List<Marker> stations, List<Marker> hotels) throws IOException {

    File output = new File("/Users/rober/Desktop/acas.kml");
    output.createNewFile();
    FileWriter writer = new FileWriter(output);

    writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
    writer.write("<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n");
    writer.write("  <Document>");

    String[] icons = new String[]{"aca", "campingsite", "hotel_0star", "lodging_0star", "motel-2"};

    for (String icon : icons) {
      writer.write("    <Style id=\"" + icon + "\">");
      writer.write("      <IconStyle>\n");
      writer.write("        <Icon>\n");
      writer.write("          <href>http://miraargentina.com/components/com_jreviews_addons/geomaps/icons/" + icon + ".png</href>\n");
      writer.write("        </Icon>\n");
      writer.write("      </IconStyle>\n");
      writer.write("    </Style>\n");
    }

    for (Marker station : stations) {
      writer.write("    <Placemark>\n");
      writer.write("      <name>" + station.title + "</name>\n");
      writer.write("      <description>" + station.comment + "</description>\n");
      writer.write("      <styleUrl>" + station.icon + "</styleUrl>\n");
      writer.write("      <Point>\n");
      writer.write("        <coordinates>" + station.lon + "," + station.lat + ",0</coordinates>\n");
      writer.write("      </Point>\n");
      writer.write("    </Placemark>\n");
    }

    for (Marker hotel : hotels) {
      writer.write("    <Placemark>\n");
      writer.write("      <name>" + hotel.title + "</name>\n");
      writer.write("      <description>" + hotel.comment + "</description>\n");
      writer.write("      <styleUrl>" + hotel.icon + "</styleUrl>\n");
      writer.write("      <Point>\n");
      writer.write("        <coordinates>" + hotel.lon + "," + hotel.lat + ",0</coordinates>\n");
      writer.write("      </Point>\n");
      writer.write("    </Placemark>\n");
    }

    writer.write("  </Document>");
    writer.write("</kml>\n");
    writer.flush();
    writer.close();
  }

  private static String safe(JsonElement... objs) {
    StringBuilder sb = new StringBuilder();
    for (JsonElement je : objs) {
      if (je != null) {
        String value = je.getAsString();
        value = value.substring(value.indexOf("\">") + 2, value.indexOf("</"));
        sb.append(value.trim()).append(", ");
      }
    }
    String result = sb.toString();
    return result.substring(0, result.length() - 2);
  }
}

source

http://miraargentina.com/aca/mapa-sucursales