Please, I have the coordinates of polygons, I want to save them in a
shapefile
I wrote this program but it does not work:
public class Afficher {
public void chercheAfficher(Coordinate[] coord) throws IOException
//throws Exception
{
/**for ( int i =0;i< coord.length;i++){
System.out.println(coord[i].x + " " + coord[i].y );}**/
final SimpleFeatureType TYPE = createFeatureType();
SimpleFeatureCollection collection =
FeatureCollections.newCollection();
GeometryFactory geometryFactory =
JTSFactoryFinder.getGeometryFactory(null);
LinearRing ring = geometryFactory.createLinearRing( coord);
LinearRing holes[] = null; // use LinearRing[] to represent holes
LinearRing polygon = geometryFactory.createLinearRing(coord);
SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(TYPE);
featureBuilder.add(polygon);
// featureBuilder.add("name");
// featureBuilder.add("15");
SimpleFeature feature = featureBuilder.buildFeature(null);
collection.add(feature);
String file = FileUtils.getFileName("D:\\location.csv");
File newFile = getNewShapeFile(file);
ShapefileDataStoreFactory dataStoreFactory = new
ShapefileDataStoreFactory();
Map<String, Serializable> params = new HashMap<String,
Serializable>();
params.put("url", newFile.toURI().toURL());
params.put("create spatial index", Boolean.TRUE);
ShapefileDataStore newDataStore = (ShapefileDataStore)
dataStoreFactory.createNewDataStore(params);
newDataStore.createSchema(TYPE);
Transaction transaction = new DefaultTransaction("create");
String typeName = newDataStore.getTypeNames()[0];
SimpleFeatureSource featureSource =
newDataStore.getFeatureSource(typeName);
if (featureSource instanceof SimpleFeatureStore) {
SimpleFeatureStore featureStore = (SimpleFeatureStore)
featureSource;
featureStore.setTransaction(transaction);
try {
featureStore.addFeatures(collection);
transaction.commit();
} catch (Exception problem) {
problem.printStackTrace();
transaction.rollback();
} finally {
transaction.close();
}
System.exit(0); // success!
} else {
System.out.println(typeName + " does not support read/write
access");
System.exit(1);
}
}
//
private static SimpleFeatureType createFeatureType() {
SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
builder.setName("Location");
builder.setCRS(DefaultGeographicCRS.WGS84); // <- Coordinate
reference system
// add attributes in order
builder.add("Location", Polygon.class);
builder.length(15).add("Name", String.class); // <- 15 chars width
for name field
// build the type
final SimpleFeatureType LOCATION = builder.buildFeatureType();
return LOCATION;
}
private static File getNewShapeFile(File csvFile) {
String path = csvFile.getAbsolutePath();
String newPath = path.substring(0, path.length() - 4) + ".shp";
JFileDataStoreChooser chooser = new JFileDataStoreChooser("shp");
chooser.setDialogTitle("Save shapefile");
chooser.setSelectedFile(new File(newPath));
int returnVal = chooser.showSaveDialog(null);
if (returnVal != JFileDataStoreChooser.APPROVE_OPTION) {
// the user cancelled the dialog
System.exit(0);
}
File newFile = chooser.getSelectedFile();
if (newFile.equals(csvFile)) {
System.out.println("Error: cannot replace " + csvFile);
System.exit(0);
}
return newFile;
}
}
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