如何使用 GeoTools API 创建和填充 shp 文件

Question

我需要创建一个空的形状文件，并用我的java集合中的数据填充它。有人可以给我看一个如何实现这一目标的例子吗？提前谢谢。

Answer 1

有关完整详细信息，请参阅 CSV 到 Shapefile 教程。

基本上，您需要在SimpleFeatureType对象中定义Shapefiles列，最简单的方法是使用SimpleFeatureTypeBuilder。这是直接从使用实用程序方法生成的，以节省时间。

final SimpleFeatureType TYPE = 
DataUtilities.createType("Location",
"location:Point:srid=4326," + // <- the geometry attribute: Point type
"name:String," + // <- a String attribute
"number:Integer" // a number attribute
);

现在，您可以创建形状文件：

/*
* Get an output file name and create the new shapefile
*/
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);
/*
* You can comment out this line if you are using the createFeatureType method (at end of
* class file) rather than DataUtilities.createType
*/
newDataStore.forceSchemaCRS(DefaultGeographicCRS.WGS84);

最后写下Features集：

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);
}